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Phase 1/2 Dose Escalation and Efficacy Study of Anti-CD38 Monoclonal Antibody in Patients With Selected CD38+ Hematological Malignancies

A Phase I/2 Dose Escalation Safety, Pharmacokinetic and Efficacy Study of Multiple Intravenous Administrations of a Humanized Monoclonal Antibody (SAR650984) Against CD38 in Patients With Selected CD38+ Hematological Malignancies

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01084252
Enrollment
351
Registered
2010-03-10
Start date
2010-05-11
Completion date
2023-07-13
Last updated
2024-11-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hematological Malignancy

Keywords

Anti-CD38 monoclonal antibody

Brief summary

Primary Objective: Phase 1: To determine the maximum tolerated dose (MTD)/maximum administered dose (MAD) of SAR650984 (Isatuximab). Phase 2 (stage 1): To evaluate the activity of single-agent Isatuximab at different doses/schedules and to select dose and regimen to further evaluate the overall response rate (ORR) of Isatuximab as single agent or in combination with dexamethasone. Phase 2 (stage 2): To evaluate the activity in terms of overall response rate (ORR) of Isatuximab at the selected dose/schedule from stage1, as single agent (ISA arm) and in combination with dexamethasone (ISAdex arm). Secondary Objectives: Phase 1: * To characterize the global safety profile including cumulative toxicities. * To evaluate the pharmacokinetic (PK) profile of Isatuximab in the proposed dosing schedule(s). * To assess the pharmacodynamics (PD), immune response, and preliminary disease response. Phase 2 (stage 1): to evaluate the following objectives for Isatuximab as single agent: * Safety * Efficacy as measured by duration of response, clinical benefit rate, progression free survival, overall survival. Phase 2 (stage 2): to evaluate the following objectives in each arm (ISA and ISAdex): * Safety * Efficacy as measured by duration of response, clinical benefit rate, progression free survival, overall survival. * Participant-reported changes in health-related quality of life, symptoms of multiple myeloma and generic health status. * Pharmacokinetic profile of Isatuximab. * Immunogenicity of Isatuximab. * Investigate the relationship between CD38 receptor density and CD38 receptor occupancy (Stage 1 only) on multiple myeloma cells and parameters of clinical response.

Detailed description

The Phase 1 study duration for an individual participant included a screening period for inclusion of up to 2 weeks, treatment with Isatuximab QW (every week) or Q2W (every 2 weeks) unless discontinued earlier due to safety or disease progression. Participants were followed for a minimum of 30 days following the last use of study drug or more than 30 days in case of unresolved toxicity, or up to initiation of another anticancer treatment. The Phase 2 study duration for an individual participant included a screening period for inclusion of up to 3 weeks, then a treatment period and a follow up period. Treatment was continued until disease progression, unacceptable adverse reactions or other reasons for discontinuation. Participants were followed every 3 months following the last use of study drug until death or study cutoff, whichever came first.

Interventions

Pharmaceutical form: solution for infusion Route of administration: intravenous

DRUGDexamethasone

Pharmaceutical form: solution for infusion Route of administration: intravenous

Sponsors

Sanofi
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

Phase 1: * For dose escalation cohorts, participants with confirmed selected CD38+ hematological malignancies as specified below who had progressed on after standard therapy or for whom there was no effective standard therapy (refractory/relapsed participants). B-cell Non-Hodgkin-lymphoma/leukemia (NHL) participants with at least 1 measurable lesion. Multiple myeloma (MM) participants with measurable M-protein serum and/or 24-hour urine. Acute myeloid leukemia (AML) participants, all types except M3 based on French-American-British (FAB) classification. Acute Lymphoblastic Leukemia (B-cell ALL) participants. Chronic lymphocytic leukemia (CLL) participants. * For expansion cohorts, participants with relapsed/refractory MM with measurable M-protein (serum M-protein of \>0.5 g/dL and/or urine M-protein of \>200 mg (24-hr urine)) or elevated serum free light chains (FLC) \>10 mg/dL with abnormal FLC ratio) who had progressed on or after standard therapy that included an Immunomodulatory drug (IMiD) and a proteasome inhibitor and who met the protocol defined criteria for standard risk or high risk. Phase 2: * Participants had a known diagnosis of multiple myeloma with evidence of measurable disease, and have evidence of disease progression based on International Myeloma Working Group (IMWG) criteria: Serum M-protein ≥1 g/dL, or urine M-protein \>=200 mg/24 hours or in the absence of measurable m-protein, serum FLC \>=10 mg/dL, and abnormal serum immunoglobulin kappa lambda FLC ratio (\<0.26 or \>1.65). * Participants who received at least three prior lines of therapy for MM and had treatment with an IMiD (for \>=2 cycles or \>=2 months of treatment) and a proteasome inhibitor (PI) (for \>=2 cycles or \>=2 months of treatment) OR participants whose disease was double refractory to an IMiD and a PI. For participants who had received more than 1 type of IMiD and PI, their disease must be refractory to the most recent one. * Participants who had achieved a minimal response or better to at least one prior line of therapy. * Participants who had received an alkylating agent (\>=2 cycles or \>=2 months) either alone or in combination with other MM treatments. * Stage 2 only: Participants who had evidence of disease progression on or after the most recent prior regimen based on IMWG criteria.

Exclusion criteria

Phase 1: * Karnofsky performance status \<60 * Poor bone marrow reserve * Poor organ function * Known intolerance to infused protein products, sucrose, histidine, polysorbate 80 or known hypersensitivity to any of the components of the study therapy that was not amenable to pre-medication with steroids and H2 blockers * Any serious active disease (including clinically significant infection that was chronic, recurrent, or active) or co-morbid condition, which, in the opinion of the investigator, interfered with the safety, the compliance with the study or with the interpretation of the results * Any severe underlying medical conditions including presence of laboratory abnormalities, which could impair the ability to participate in the study or the interpretation of its results Phase 2: * Participants with multiple myeloma immunoglobulin M (IgM) subtype * Previous treatment with any anti-CD38 therapy * Participants with concurrent plasma cell leukemia * Participants with known or suspected amyloidosis * Karnofsky performance status \<60 (stage 1)/Eastern Cooperative Oncology Group (ECOG) Performance status \>2 (stage 2). * Poor bone marrow reserve * Poor organ function * Known intolerance to infused protein products, sucrose, histidine, polysorbate 80 or known hypersensitivity to any of the components of the study therapy that was not amenable to pre-medication with steroids and H2 blockers * Any serious active disease (including clinically significant infection that was chronic, recurrent, or active) or co-morbid condition, which, in the opinion of the investigator, interfered with the safety, the compliance with the study or with the interpretation of the results * Any severe underlying medical conditions including presence of laboratory abnormalities, which impaired the ability to participate in the study or the interpretation of its results The above information was not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

Design outcomes

Primary

MeasureTime frameDescription
Phase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)From Baseline up to 30 days after the last dose (maximum duration: 120 weeks )Adverse event (AE) was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened during the on-treatment period which was defined as the period from the time of first dose of study treatment until 30 days after the last dose of study treatment.
Phase 1: Number of Participants With Dose Limiting Toxicities (DLTs)Day 1 of Cycle 1 up to Day 14 of Cycle 2DLTs were assessed using the national cancer institute common terminology criteria for adverse events (NCI-CTCAE) version 4.03. DLTs were defined as any Grade 3 or higher non-hematological toxicity (with the exception of allergic reaction/hypersensitivity), Grade 4 neutropenia and/or Grade 4 thrombocytopenia lasting longer than 5 days, attributed to isatuximab. Any other toxicity that the Investigator and the Sponsor deemed to be dose-limiting, regardless of the grade, was also considered as DLT.
Phase 2 Stage 1: Percentage of Participants With Overall Response (OR) According to International Myeloma Working Group (IMWG) Uniform Response CriteriaFrom the date of randomization until disease progression or death or data cut-off (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for Stage 1b arm)OR defined as participants with stringent complete response (sCR) or complete response (CR) or very good partial response (VGPR) or partial response (PR) . Based on IMWG, CR: Negative serum and urine on immunofixation, disappearance of any soft tissue plasmacytomas and \<=5% plasma cells in bone marrow; sCR: CR and normal free light chain (FLC) ratio and no clonal cells in bone marrow; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or \>=90% reduction in serum M-protein and urine M-protein level \<100 mg/24 hours; PR: \>=50% reduction of serum M-Protein and reduction in urinary M-protein by \>=90% or to \<200 mg/24 hours; \>=50% decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria or a \>=50% reduction in plasma cells in place of M-protein if present at baseline.
Phase 2 Stage 2: Percentage of Participants With Overall Response According to Updated IMWG Response CriteriaFrom the date of randomization to date of death from any cause (maximum duration: 97 weeks)OR: participants with sCR or CR or VGPR or PR. As per updated IMWG, CR: Negative immunofixation on serum and urine, disappearance of any soft tissue plasmacytomas and \<=5% plasma cells in bone marrow; normal FLC ratio of 0.26-1.65 in participants with only FLC disease; sCR: CR and normal FLC ratio and no clonal cells in bone marrow; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or \>=90% reduction in serum M-protein and urine M-protein level \<100 mg/24 hours, \>90% decrease in the difference between involved and uninvolved FLC levels; PR: \>=50% reduction of serum M-Protein and reduction in urinary M-protein by \>=90% or to \<200 mg/24 hours; \>=50% decrease in the difference between involved and uninvolved FLC levels in place of M-protein criteria or \>=50% reduction in plasma cells in place of M-protein if present at baseline.

Secondary

MeasureTime frameDescription
PK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)For Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 168 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 168 hr post-infusionData for this outcome measure was planned to be collected and analyzed only for dose 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03, 0.1 and 0.3 mg/kg dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow).
PK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)For Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 336 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 336 hr post-infusionData for this outcome measure was planned to be collected and analyzed only for dose 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03, 0.1 and 0.3 mg/kg dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow).
Pharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersCycle 1 Day 1Serum/plasma markers included: tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1-β), interleukin 6 (IL-6) and interferon-gamma (IFN-Gamma). Due to change in planned analysis, data for high-sensitivity C-reactive protein (hs-CRP) and CD38 was not collected and analyzed.
Immunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseUp to 120 weeksADA response was categorized as: treatment induced and treatment boosted response. Treatment-induced ADA was defined as ADA that developed at any time during the ADA on-study observation period (defined as the time from the first isatuximab administration until end of Phase 1) in participants without preexisting ADA (defined as: ADA that were present in samples drawn before treatment), including participants without pre-treatment (before treatment) samples. Treatment boosted ADA was defined as pre-existing ADA that increased at least 2 titer steps between pre-treatment (before treatment) and post-treatment.
Clinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaFrom the date of randomization to the date of first documentation of progression or death (due to any cause) (maximum duration: 120 weeks)OR defined as participants with complete response (CR) or partial response (PR) as best overall response (BOR). Clinical benefit: participants with minimal response (MR) or better as BOR. BOR: best sequential response from start of treatment through the entire study excluding any time point following start of other treatment. CR: negative immunofixation on serum and urine, disappearance of any soft tissue plasmacytomas, \<5% plasma cells in bone marrow aspirates, no increase in size or number of lytic bone lesions. PR: \>=50% reduction of serum M-protein, reduction in 24 h urinary M-protein by \>=90% or \<200mg, \>=50% reduction in size/number of soft tissue plasmacytomas, no increase in size or number of lytic bone lesions. MR: 25 to 49% reduction in serum M-protein, 50-89% reduction in 24h urine M-protein, 25-49% reduction in size of soft tissue plasmacytomas, no increase in size or number of lytic bone lesions.
Clinical Assessment: Phase 1: Duration of Response (DOR)From the date of first response to the date of first documentation of progression or death (due to any cause) (maximum duration: 120 weeks)DOR: time from first response (PR or better) to first documented tumor progression/death. Progression as per EBMT: \>25% increase in serum monoclonal paraprotein level, which must also be an absolute increase of \>= 5 g/l: confirmed by \>=1 repeated investigation; \>25% increase in 24h urinary light chain excretion, which must also be an absolute increase of \>=200 mg/24 h:confirmed by \>=1 repeated investigation; \>25% increase in plasma cells in a bone marrow aspirate/on trephine biopsy, which must also be an absolute increase of \>= 10%; definite increase in size of existing bone lesions/soft tissue plasmacytomas; development of new bone lesions/soft tissue plasmacytomas; development of hypercalcemia (corrected serum calcium \>11·5 mg/dl or 2·8 mmol/l) not attributable to any other cause. PR: \>=50% reduction of serum M-protein, reduction in 24h urinary M-protein by \>=90% or \<200mg, \>=50% reduction in size/number of soft tissue plasmacytomas, no increase in size/number of lytic bone lesions.
Clinical Assessment: Phase 1: Time to First Response (TTR)From the date of first dose administration to the date of first response or death (due to any cause) (maximum duration: 120 weeks)TTR was defined as the time from first dose of isatuximab to first response (PR or better). PR: \>=50% reduction of serum M-protein, reduction in 24 h urinary M-protein by \>=90% or \<200mg, \>=50% reduction in size/number of soft tissue plasmacytomas, no increase in size or number of lytic bone lesions.
Clinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) (Karnofsky Performance Status)-Shift From Baseline Value to Best Value During TreatmentAt baseline, during treatment (Day 1 up to 120 weeks)ECOG performance status was measured on a 4 point scale to assess participant's performance status. 0=Normal, fully functional; 1=Fatigue without significant decrease in daily activity; 2=Fatigue with significant impairment of daily activities or bed rest \<50% of waking hours; 3=Bed rest/sitting \>50% of waking hours; 4=Bedridden or unable to care for self, where lower score indicated good performance status. Number of participants with Baseline ECOG PS score and corresponding changes to the best values (categorized as: Baseline ECOG 1, During Treatment ECOG 0; Baseline ECOG 2, During Treatment ECOG 0; Baseline ECOG 2, During Treatment ECOG 1) are reported.
Clinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentAt baseline, during treatment (up to 120 weeks)ECOG performance status was measured on a 4 point scale to assess participant's performance status. 0=Normal, fully functional; 1=Fatigue without significant decrease in daily activity; 2=Fatigue with significant impairment of daily activities or bed rest \<50% of waking hours; 3=Bed rest/sitting\>50% of waking hours; 4=Bedridden or unable to care for self, where higher score indicated worst performance status. Number of participants with Baseline ECOG PS score and corresponding changes to the worst values (categorized as: Baseline ECOG 0, During Treatment ECOG 1; Baseline ECOG 2, During Treatment ECOG 1; Baseline ECOG 0, During Treatment ECOG 2; Baseline ECOG 1, During Treatment ECOG 2; Baseline ECOG 0, During Treatment ECOG 3; Baseline ECOG 1, During Treatment ECOG 3; Baseline ECOG 2, During Treatment ECOG 3) are reported.
Phase 2 Stage 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)From Baseline up to 30 days after the last dose (maximum duration: 414 weeks for Stage 1a and 92 weeks for Stage 1b)Adverse event (AE) was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened during the on-treatment period which was defined as the period from the time of first dose of study treatment until 30 days after the last dose of study treatment.
Phase 2 Stage 2: Number of Participants With Treatment Emergent Adverse Events (TEAEs)From Baseline up to 30 days after the last dose (maximum duration: 301 weeks)AE was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened during the on-treatment period which was defined as the period from the time of first dose of study treatment until 30 days after the last dose of study treatment.
Phase 2 Stage 1: Duration of ResponseFrom the date of first response until disease progression or death or data cut-off (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)DOR:Time from date of 1st IAC determined response (\>= PR) that was subsequently confirmed, to date of first IAC determined PD/death, whichever happened earlier. updated IMWG criteria- PR:\>=50% decrease in difference between involved and uninvolved FLC levels in place of M-protein criteria or a \>=50% reduction in plasma cells in place of M-protein if baseline was ≥30%. If present at baseline a \>=50% reduction in size of soft tissue plasmacytomas; PD: Increase of 25% from lowest response value in any of following: Serum M-protein \>=0.5 g/dL absolute increase and/or urine M-protein \>=200 mg/24 hours absolute increase and/or \>10 mg/dL absolute increase in difference between involved and uninvolved FLC levels, \>=10% bone marrow plasma cells (PCs), development of new bone lesions/soft tissue plasmacytomas or definite increase in size of existing bone lesions/soft tissue plasmacytomas, development of hypercalcemia (corrected serum calcium \>11·5 mg/dl) attributed to PC proliferation disorder.
Phase 2 Stage 2: Duration of ResponseFrom the date of first response until disease progression or death or data cut-off (maximum duration: 97 weeks)DOR: Time from date of 1st IAC determined response (\>= PR) that was subsequently confirmed, to date of 1st IAC determined PD or death, whichever happened earlier. As per updated IMWG criteria-PR: ≥50% reduction of serum M-Protein and reduction in urinary M-protein by ≥90% or to \<200 mg/24 hours. ≥50% decrease in difference between involved and uninvolved FLC levels in place of M-protein criteria or ≥50% reduction in plasma cells in place of M-protein if baseline was ≥30%. If present at baseline ≥50% reduction in size of soft tissue plasmacytomas; PD: Increase of \>25% from lowest response value in any one of following: Serum M-component (absolute increase must be \>0.5 g/dL)4 and/or Urine M-component (absolute increase must be \>200 mg/24 h) and/or \>10 mg/dL absolute increase in difference between involved and uninvolved FLC levels, \>=10% bone marrow plasma cell, development of hypercalcemia (corrected serum calcium \>11.5 mg/dL) attributed solely to plasma cell proliferative disorder.
Phase 2 Stage 1: Percentage of Participants With Clinical BenefitFrom the date of randomization to the date of first documentation of progression or death (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)Clinical benefit: participants with sCR, CR, VGPR, PR or MR as per IMWG criteria, determined by IAC. CR: negative immunofixation on serum & urine, disappearance of any soft tissue plasmacytomas,\<5% PCs in bone marrow aspirates. sCR: CR + normal FLC ratio (0.26-1.65), absence of clonal cells in bone marrow biopsy. VGPR: serum & urine M-component detectable by immunofixation, not on electrophoresis/,\>=90% reduction in serum M-component plus urine M-component level \<100mg/24hours; PR: ≥50% reduction of serum M-Protein and reduction in urinary M-protein by ≥90% or to \<200 mg/24 hours, ≥50% decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria or a ≥50% reduction in plasma cells in place of M-protein if baseline was ≥30%. If present at baseline, ≥50% size reduction in soft tissue plasmacytomas. MR:\>=25 but \<49% reduction in serum M-protein, reduction in 24h urine M-protein by 50-89%, 25-49% size reduction in soft tissue plasmacytomas.
Pharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1 and Cycle 3 Day 1: At the end of infusionCeoi was defined as the plasma concentration of Isatuximab at end of infusion. Data for this outcome measure was planned to be collected and analyzed separately for dose 0.3 mg/kg, 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03 and 0.1 dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow). Analysis was performed on PK population: participants who gave informed consent, received at least one dose (even if incomplete) of isatuximab, had an assessable PK parameter.
Phase 2 Stage 1: Progression Free Survival (PFS)From the date of the first dose administration until progression or death, whichever occurred first (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)PFS was defined as the time interval from the date of first isatuximab administration to the date of the first IAC-confirmed disease progression (PD) or date of death due to any cause, whichever came first. As per IMWG criteria, PD: Increase of \> 25% from lowest response value in any one or more of the following: Serum M-component and/or (the absolute increase must be \> 0.5 g/dL), Urine M-component and/or (the absolute increase must be \> 200 mg/24 h), \> 10mg/dL decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria, \>10% absolute percentage of bone marrow plasma cell, definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas, development of hypercalcemia (corrected serum calcium \> 11.5 mg/dL or 2.65 mmol/L) that attributed solely to the plasma cell proliferative disorder. Analysis was performed by Kaplan-Meier method.
Phase 2 Stage 2: Progression Free SurvivalFrom the date of the first dose administration until progression or death, whichever occurred first (maximum duration: 97 weeks)PFS was defined as the time interval from the date of first isatuximab administration to the date of the first IAC-confirmed disease progression or the date of death due to any cause, whichever came first. As per IMWG criteria, PD: Increase of \>25% from lowest response value in any one of the following: Serum M-component (the absolute increase must be \>0.5 g/dL)4 and/or Urine M-component (the absolute increase must be \>200 mg/24 h) and/or \>10 mg/dL decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria, ≥10% bone marrow plasma cell, development of hypercalcemia (corrected serum calcium \>11.5 mg/dL) attributed solely to the plasma cell proliferative disorder. Analysis was performed by Kaplan-Meier method.
Phase 2 Stage 1: Overall Survival (OS)From the date of randomization to date of death from any cause (maximum duration 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)OS was defined as the time interval from the date of first Isatuximab administration to death from any cause. Analysis was performed by Kaplan-Meier method.
Phase 2 Stage 2: Overall SurvivalFrom the date of randomization to date of death from any cause (maximum duration: 97 weeks)OS was defined as the time interval from the date of first Isatuximab administration to death from any cause. Analysis was performed by Kaplan-Meier method.
Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusBaseline, Day 1 of Cycles 2, 3, 4, 5, 6, 7, 8, 9, 10 and End of Treatment (EOT: anytime up to 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)EORTC-QLQ-C30 is a cancer-specific instrument with 30 questions for evaluation of new chemotherapy and provides an assessment of participant reported outcome dimensions. First 28 questions used 4-point scale (1=not at all,2=a little,3=quite a bit,4=very much) for evaluating 5 functional scales (physical, role, emotional, cognitive, social), 3 symptom scales (fatigue, nausea/vomiting, pain) & other single items. For each item, high score = high level of symptomatology/problem. Last 2 questions represented participant's assessment of overall health & quality of life, coded on 7-point scale (1=very poor to 7=excellent). EORTC QLQ-C30 observed values and change from baseline for global health status (scoring of questions 29 & 30) and 5 functional scales, 3 symptom scales and other single items (scoring of questions 1 to 28). Answers were converted into grading scale, with values between 0 and 100. A high score represented a favorable outcome with a best quality of life for participant.
Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreBaseline, Day 1 of Cycles 2, 3, 4, 5, 6, 7, 8, 9, 10 and EOT (anytime up to 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)EORTC QLQ-MY20 is a validated questionnaire to assess the overall quality of life in participants with MM. It has 4 subscales: body image, future perspective), and 2 symptoms scales (disease symptoms and side-effects of treatment). Disease symptoms subscale used 4-point scale ranged from 1= 'Not at All' to 4= 'Very Much'. Scores were averaged, and transformed to 0 -100 scale, where higher scores = more symptoms and lower health-related quality of life (HRQL) and lower score = less symptoms and more HRQL.
Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresBaseline, Day 1 of Cycles 4, 7, 10, 13, 16, 19, and EOT (anytime up to 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)EQ-5D was a standardized HRQL questionnaire consisting of EQ-5D descriptive system and Visual Analogue Scale (VAS). EQ-5D VAS was used to record a participant's rating for his/her current health-related quality of life state and captured on a vertical VAS (0-100), where 0 = worst imaginable health state and 100 = best imaginable health state.
Pharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 1 Week IntervalPre-dose, at the end of infusion, 1 hour and 168 hours post dose on Day 1 of Cycle 1
Pharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 2 Weeks IntervalCycle 1, Day 1: pre-dose, at the end of infusion, 168 and 336 hours post-infusion
Pharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 4 Weeks IntervalCycle 1, Day 1: pre-dose, at the end of infusion, 168, 336, and 672 hours post-infusion
Pharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)At Days 7, 14 and 28
Pharmacokinetic Assessment: Phase 2 Stage 2: Accumulation Ratio of Isatuximab Based on CtroughCycle 2, Day 1; Cycle 1, Day 8; Cycle 4, Day 1Ctrough is the plasma concentration observed before treatment administration. For 1st category, the accumulation ratio was calculated by dividing Ctrough value of Cycle 2 Day 1 by Cycle 1 Day 8 and for second category, accumulation ratio was calculated by dividing Ctrough value of Cycle 4 Day 1 by Cycle 1 Day 8.
Immunogenicity Assessment: Phase 2 Stage 2: Number of Participants With Anti-drug Antibodies to IsatuximabUp to 97 weeksADA response was categorized as: treatment induced and treatment boosted response. Treatment-induced ADA was defined as ADA that developed at any time during the ADA on-study observation period (defined as the time from the first isatuximab administration until end of Phase 2 Stage 2) in participants without preexisting ADA (defined as: ADA that were present in samples drawn before treatment), including participants without pre-treatment (before treatment) samples. Treatment boosted ADA was defined as pre-existing ADA that increased at least 2 titer steps between pre-treatment (before treatment) and post-treatment.
Phase 2 Stage 2: Percentage of Participants With Clinical BenefitFrom the date of randomization to the date of first documentation of progression or death (maximum duration: 97 weeks )Clinical benefit:participants with sCR, CR, VGPR, PR or MR, per IMWG criteria, determined by IAC. CR:negative immunofixation on serum & urine, disappearance of any soft tissue plasmacytomas,\<5% plasma cells in bone marrow aspirates,normal FLC ratio(0.26-1.65) in participants with only FLC disease.sCR:CR+normal FLC ratio, absence of clonal cells in bone marrow biopsy.VGPR:serum & urine M-component detectable by immunofixation, not on electrophoresis/,\>=90% reduction in serum M-component plus urine M-component level \<100mg/24h/,\>=90% decrease in difference between involved and uninvolved FLC levels; PR:\>=50% reduction of serum M-protein, reduction in 24h urinary M-protein by \>=90%/\<200mg/24h,\>50% decrease in difference between involved and uninvolved FLC in place of M-protein criteria, \>=50% reduction in size/number of soft tissue plasmacytomas. MR:\>=25 but \<49% reduction in serum M-protein,reduction in 24h urine M-protein by 50-89%, 25-49% reduction in size of soft tissue plasmacytomas
PK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabFor Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 168 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 168 hr post-infusionData for this outcome measure was planned to be collected and analyzed separately for dose 0.3 mg/kg, 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03 and 0.1 dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow). Analysis was performed on PK population.
PK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabFor Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 168 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 168 hr post-infusionData for this outcome measure was planned to be collected and analyzed separately for dose 0.3 mg/kg, 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03 and 0.1 dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow). Analysis was performed on PK population.
PK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 1, 2 and 3Data for this outcome measure was planned to be collected and analyzed only for dose 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03, 0.1 and 0.3 mg/kg dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow).

Countries

Argentina, Belgium, Brazil, Chile, Finland, France, Greece, Israel, Italy, Mexico, Peru, Russia, Spain, Turkey (Türkiye), Ukraine, United Kingdom, United States

Participant flow

Recruitment details

Study participants were involved in the study from 11 May 2010 at 59 centers in 18 countries. A total of 418 participants were screened, of which 351 participants were enrolled. A total of 67 participants had screen failures due to failure to meet inclusion criteria.

Pre-assignment details

Study consisted 2 phases: Phase 1 and Phase 2. Phase 1 was a dose escalation part of isatuximab to determine maximum tolerated dose (MTD). Phase 2 was conducted for efficacy and safety evaluation of isatuximab with or without dexamethasone. It consisted of 2 stages: Stage 1 (comprised of 1a and 1b) and Stage 2.

Participants by arm

ArmCount
Phase 1:Isatuximab <=1 mg/kg Q2W
Participants with CD38+ HM, received Isatuximab at any one of the dose \<= 1 mg/kg (i.e. either 0.0001 mg/kg or 0.001 mg/kg or 0.01 mg/kg or 0.03 mg/kg, or 0.1 mg/kg or 0.3 mg/kg or 1 mg/kg) as IV infusion on Day 1 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal by participant, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
16
Phase 1: Isatuximab 3mg/kg Q2W
Participants with CD38+ HM, received Isatuximab 3 mg/kg, as IV infusion on Day 1 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
6
Phase 1: Isatuximab 5 mg/kg Q2W
Participants with CD38+ HM, received Isatuximab 5 mg/kg, as IV infusion on Day 1 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
3
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)
Participants with CD38+ HM along with participants with standard risk multiple myeloma were included in this arm and, received Isatuximab 10 mg/kg, as IV infusion on Day 1 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
26
Phase 1: Isatuximab (CD38 + HM and High Risk Multiple Myeloma)
Participants with CD38+ HM along with participants with high risk multiple myeloma were included in this arm and, received Isatuximab 10 mg/kg, as IV infusion on Day 1 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
18
Phase 1: Isatuximab 10 mg/kg QW
Participants with CD38+ HM, received Isatuximab 10 mg/kg, as IV infusion QW, i.e. on Day 1 and 8 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
6
Phase 1: Isatuximab 20 mg/kg Q2W
Participants with CD38+ HM, received Isatuximab 20 mg/kg, as IV infusion on Day 1 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
7
Phase 1: Isatuximab 20 mg/kg QW
Participants with CD38+ HM, received Isatuximab 20 mg/kg, as IV infusion QW, i.e. on Day 1 and 8 of each 14-day treatment cycle until occurrence of unacceptable toxicity, disease progression, death, consent withdrawal, investigator's decision, and/or availability of study drug (maximum exposure: 120 weeks).
7
Phase 2 Stage 1a: Isatuximab 3 mg/kg Q2W
Participants with multiple Myeloma received Isatuximab 3 mg/kg, as IV infusion on Day 1 and Day 15 of each 28-day cycle until unacceptable AE, disease progression, poor compliance to the study protocol, study termination or lost to follow up (maximum exposure: 414 weeks).
23
Phase 2 Stage 1a: Isatuximab 10 mg/kg Q2W
Participants with multiple Myeloma received Isatuximab 10 mg/kg, as IV infusion on Day 1 and Day 15 of each 28-day cycle until unacceptable AE, disease progression, poor compliance to the study protocol, study termination or lost to follow up (maximum exposure: 414 weeks).
24
Phase 2 Stage 1a: Isatuximab 10mg/kg Q2W; Then Q4W
Participants with multiple Myeloma received Isatuximab 10 mg/kg, as IV infusion Q2W, i.e. on Day 1 and Day 15 of Cycle 1 and 2 (each cycle 28 days), then every 4 weeks (Q4W), i.e. on Day 1 of each 28-days cycle until unacceptable AE, disease progression, poor compliance to the study protocol, study termination or lost to follow up (maximum exposure: 414 weeks).
25
Phase 2 Stage 1b: Isatuximab 20mg/kg QW and Then Q2W
Participants with multiple Myeloma received Isatuximab 20 mg/kg, as IV infusion QW, i.e. on Day 1, 8, 15 and 22 of Cycle 1 and 2 (each cycle 28 days), then Q2W, i.e. on Day 1 and Day 15 of each 28-days cycle until unacceptable AE, disease progression, poor compliance to the study protocol, study termination or lost to follow up (maximum exposure: 92 weeks).
25
Phase 2 Stage 2: Isatuximab Alone
Participants with relapsed or relapsed/refractory multiple myeloma (RRMM), received Isatuximab 20 mg/kg, as IV infusion on Day 1, 8, 15 and Day 22 of Cycle 1 (28 days) and then on Day 1 and 15 of each subsequent 28-day cycles until unacceptable AE, disease progression, poor compliance to the study protocol, study termination, lost to follow up or investigator's decision (maximum exposure: 301 weeks).
109
Phase 2 Stage 2: Isatuximab + Dexamethasone
Participants with relapsed or RRMM, received Isatuximab 20 mg/kg, as IV infusion on Day 1, 8, 15 and Day 22 of Cycle 1 (28 days) and then on Day 1 and 15 of each subsequent 28-day cycles along with dexamethasone: tablet or as IV infusion (40 mg/day for less than \[\<\] 75 years of age; 20 mg/day for greater than or equal to \[\>=\] 75 years of age) on Days 1, 8, 15 and 22 of each 28 days cycle until unacceptable AE, disease progression, poor compliance to the study protocol, study termination, lost to follow up or investigator's decision (maximum exposure: 301 weeks).
55
Total350

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009FG010FG011FG012FG013
Phase 2 Stage 2 (301 Weeks)Enrolled, but not treated00000000000010

Baseline characteristics

CharacteristicTotalPhase 2 Stage 2: Isatuximab + DexamethasonePhase 2 Stage 2: Isatuximab AlonePhase 2 Stage 1b: Isatuximab 20mg/kg QW and Then Q2WPhase 2 Stage 1a: Isatuximab 10mg/kg Q2W; Then Q4WPhase 2 Stage 1a: Isatuximab 10 mg/kg Q2WPhase 2 Stage 1a: Isatuximab 3 mg/kg Q2WPhase 1: Isatuximab 20 mg/kg QWPhase 1: Isatuximab 20 mg/kg Q2WPhase 1: Isatuximab 10 mg/kg QWPhase 1: Isatuximab (CD38 + HM and High Risk Multiple Myeloma)Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 1: Isatuximab 5 mg/kg Q2WPhase 1: Isatuximab 3mg/kg Q2WPhase 1:Isatuximab <=1 mg/kg Q2W
Age, Continuous64.5 years
STANDARD_DEVIATION 9.2
66.3 years
STANDARD_DEVIATION 8.9
66.6 years
STANDARD_DEVIATION 8.8
61.1 years
STANDARD_DEVIATION 10.3
61.0 years
STANDARD_DEVIATION 7.3
63.9 years
STANDARD_DEVIATION 8.8
63.2 years
STANDARD_DEVIATION 8.9
60.0 years
STANDARD_DEVIATION 8.3
63.3 years
STANDARD_DEVIATION 10
61.7 years
STANDARD_DEVIATION 12.7
60.8 years
STANDARD_DEVIATION 12.6
65.0 years
STANDARD_DEVIATION 7.2
62.0 years
STANDARD_DEVIATION 3.5
63.5 years
STANDARD_DEVIATION 6.2
64.9 years
STANDARD_DEVIATION 11.6
Race (NIH/OMB)
American Indian or Alaska Native
3 Participants0 Participants2 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
4 Participants1 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants2 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
20 Participants3 Participants5 Participants3 Participants4 Participants2 Participants1 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
35 Participants6 Participants11 Participants0 Participants1 Participants2 Participants1 Participants0 Participants1 Participants2 Participants2 Participants6 Participants0 Participants1 Participants2 Participants
Race (NIH/OMB)
White
287 Participants45 Participants91 Participants21 Participants19 Participants19 Participants21 Participants7 Participants6 Participants4 Participants13 Participants20 Participants3 Participants4 Participants14 Participants
Sex: Female, Male
Female
162 Participants26 Participants58 Participants13 Participants7 Participants11 Participants11 Participants3 Participants2 Participants2 Participants9 Participants11 Participants1 Participants3 Participants5 Participants
Sex: Female, Male
Male
188 Participants29 Participants51 Participants12 Participants18 Participants13 Participants12 Participants4 Participants5 Participants4 Participants9 Participants15 Participants2 Participants3 Participants11 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
EG013
affected / at risk
deaths
Total, all-cause mortality
5 / 161 / 60 / 30 / 262 / 182 / 62 / 70 / 711 / 2313 / 2411 / 2511 / 2556 / 10925 / 55
other
Total, other adverse events
16 / 166 / 63 / 326 / 2618 / 186 / 66 / 76 / 722 / 2323 / 2425 / 2524 / 2592 / 10947 / 55
serious
Total, serious adverse events
3 / 163 / 61 / 310 / 2610 / 183 / 63 / 73 / 713 / 2311 / 2410 / 259 / 2552 / 10927 / 55

Outcome results

Primary

Phase 1: Number of Participants With Dose Limiting Toxicities (DLTs)

DLTs were assessed using the national cancer institute common terminology criteria for adverse events (NCI-CTCAE) version 4.03. DLTs were defined as any Grade 3 or higher non-hematological toxicity (with the exception of allergic reaction/hypersensitivity), Grade 4 neutropenia and/or Grade 4 thrombocytopenia lasting longer than 5 days, attributed to isatuximab. Any other toxicity that the Investigator and the Sponsor deemed to be dose-limiting, regardless of the grade, was also considered as DLT.

Time frame: Day 1 of Cycle 1 up to Day 14 of Cycle 2

Population: DLT evaluable population included participants who gave their informed consent, received at least 1 dose of isatuximab during Phase 1 and had a DLT assessment at the end of Cycle 2. Data was planned not to be collected and analyzed for the arm: Phase 1: Isatuximab (CD38 + HM and High Risk Multiple Myeloma).

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 1: Number of Participants With Dose Limiting Toxicities (DLTs)1 Participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 1: Number of Participants With Dose Limiting Toxicities (DLTs)1 Participants
Phase 1: Isatuximab 5mg/kg Q2WPhase 1: Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 1: Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Phase 1: Isatuximab 10 mg/kg QWPhase 1: Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Phase 1: Isatuximab 20mg/kg Q2WPhase 1: Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Phase 1: Isatuximab 20mg/kg QWPhase 1: Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Primary

Phase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)

Adverse event (AE) was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened during the on-treatment period which was defined as the period from the time of first dose of study treatment until 30 days after the last dose of study treatment.

Time frame: From Baseline up to 30 days after the last dose (maximum duration: 120 weeks )

Population: Analysis was performed on AT population which included participants who signed informed consent and received at least 1 dose/even incomplete of isatuximab.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)16 Participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)6 Participants
Phase 1: Isatuximab 5mg/kg Q2WPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)3 Participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)26 Participants
Phase 1: Isatuximab 10 mg/kg QWPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)18 Participants
Phase 1: Isatuximab 20mg/kg Q2WPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)6 Participants
Phase 1: Isatuximab 20mg/kg QWPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)7 Participants
Phase 1: Isatuximab 20mg/kg QWPhase 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)6 Participants
Primary

Phase 2 Stage 1: Percentage of Participants With Overall Response (OR) According to International Myeloma Working Group (IMWG) Uniform Response Criteria

OR defined as participants with stringent complete response (sCR) or complete response (CR) or very good partial response (VGPR) or partial response (PR) . Based on IMWG, CR: Negative serum and urine on immunofixation, disappearance of any soft tissue plasmacytomas and \<=5% plasma cells in bone marrow; sCR: CR and normal free light chain (FLC) ratio and no clonal cells in bone marrow; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or \>=90% reduction in serum M-protein and urine M-protein level \<100 mg/24 hours; PR: \>=50% reduction of serum M-Protein and reduction in urinary M-protein by \>=90% or to \<200 mg/24 hours; \>=50% decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria or a \>=50% reduction in plasma cells in place of M-protein if present at baseline.

Time frame: From the date of randomization until disease progression or death or data cut-off (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for Stage 1b arm)

Population: Analysis was performed on AT population which included participants who signed informed consent and received at least 1 dose/even incomplete of isatuximab.

ArmMeasureValue (NUMBER)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Percentage of Participants With Overall Response (OR) According to International Myeloma Working Group (IMWG) Uniform Response Criteria4.3 percentage of participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Percentage of Participants With Overall Response (OR) According to International Myeloma Working Group (IMWG) Uniform Response Criteria29.2 percentage of participants
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Percentage of Participants With Overall Response (OR) According to International Myeloma Working Group (IMWG) Uniform Response Criteria20.0 percentage of participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Percentage of Participants With Overall Response (OR) According to International Myeloma Working Group (IMWG) Uniform Response Criteria24.0 percentage of participants
Primary

Phase 2 Stage 2: Percentage of Participants With Overall Response According to Updated IMWG Response Criteria

OR: participants with sCR or CR or VGPR or PR. As per updated IMWG, CR: Negative immunofixation on serum and urine, disappearance of any soft tissue plasmacytomas and \<=5% plasma cells in bone marrow; normal FLC ratio of 0.26-1.65 in participants with only FLC disease; sCR: CR and normal FLC ratio and no clonal cells in bone marrow; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or \>=90% reduction in serum M-protein and urine M-protein level \<100 mg/24 hours, \>90% decrease in the difference between involved and uninvolved FLC levels; PR: \>=50% reduction of serum M-Protein and reduction in urinary M-protein by \>=90% or to \<200 mg/24 hours; \>=50% decrease in the difference between involved and uninvolved FLC levels in place of M-protein criteria or \>=50% reduction in plasma cells in place of M-protein if present at baseline.

Time frame: From the date of randomization to date of death from any cause (maximum duration: 97 weeks)

Population: Analysis was performed on AT population which included participants who signed informed consent \& received at least 1 dose/even incomplete of isatuximab.

ArmMeasureValue (NUMBER)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 2: Percentage of Participants With Overall Response According to Updated IMWG Response Criteria23.9 percentage of participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 2: Percentage of Participants With Overall Response According to Updated IMWG Response Criteria43.6 percentage of participants
Secondary

Clinical Assessment: Phase 1: Duration of Response (DOR)

DOR: time from first response (PR or better) to first documented tumor progression/death. Progression as per EBMT: \>25% increase in serum monoclonal paraprotein level, which must also be an absolute increase of \>= 5 g/l: confirmed by \>=1 repeated investigation; \>25% increase in 24h urinary light chain excretion, which must also be an absolute increase of \>=200 mg/24 h:confirmed by \>=1 repeated investigation; \>25% increase in plasma cells in a bone marrow aspirate/on trephine biopsy, which must also be an absolute increase of \>= 10%; definite increase in size of existing bone lesions/soft tissue plasmacytomas; development of new bone lesions/soft tissue plasmacytomas; development of hypercalcemia (corrected serum calcium \>11·5 mg/dl or 2·8 mmol/l) not attributable to any other cause. PR: \>=50% reduction of serum M-protein, reduction in 24h urinary M-protein by \>=90% or \<200mg, \>=50% reduction in size/number of soft tissue plasmacytomas, no increase in size/number of lytic bone lesions.

Time frame: From the date of first response to the date of first documentation of progression or death (due to any cause) (maximum duration: 120 weeks)

Population: Analysis was performed only on subset of participants who had response in Phase 1 and not for the reporting group with no response.

ArmMeasureValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Duration of Response (DOR)20.21 months
Phase 1: Isatuximab 3mg/kg Q2WClinical Assessment: Phase 1: Duration of Response (DOR)7.16 months
Phase 1: Isatuximab 5mg/kg Q2WClinical Assessment: Phase 1: Duration of Response (DOR)5.76 monthsStandard Deviation 4.62
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Clinical Assessment: Phase 1: Duration of Response (DOR)10.70 monthsStandard Deviation 11.25
Phase 1: Isatuximab 10 mg/kg QWClinical Assessment: Phase 1: Duration of Response (DOR)14.31 monthsStandard Deviation 7.5
Phase 1: Isatuximab 20mg/kg Q2WClinical Assessment: Phase 1: Duration of Response (DOR)3.94 months
Phase 1: Isatuximab 20mg/kg QWClinical Assessment: Phase 1: Duration of Response (DOR)8.82 monthsStandard Deviation 7.83
Secondary

Clinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) (Karnofsky Performance Status)-Shift From Baseline Value to Best Value During Treatment

ECOG performance status was measured on a 4 point scale to assess participant's performance status. 0=Normal, fully functional; 1=Fatigue without significant decrease in daily activity; 2=Fatigue with significant impairment of daily activities or bed rest \<50% of waking hours; 3=Bed rest/sitting \>50% of waking hours; 4=Bedridden or unable to care for self, where lower score indicated good performance status. Number of participants with Baseline ECOG PS score and corresponding changes to the best values (categorized as: Baseline ECOG 1, During Treatment ECOG 0; Baseline ECOG 2, During Treatment ECOG 0; Baseline ECOG 2, During Treatment ECOG 1) are reported.

Time frame: At baseline, during treatment (Day 1 up to 120 weeks)

Population: Analysis was performed on AT population. Data for this outcome measure was planned to be collected and analyzed for a combined arm of overall Phase 1 AT population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) (Karnofsky Performance Status)-Shift From Baseline Value to Best Value During TreatmentBaseline ECOG 1, During Treatment ECOG 011 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) (Karnofsky Performance Status)-Shift From Baseline Value to Best Value During TreatmentBaseline ECOG 2, During Treatment ECOG 02 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) (Karnofsky Performance Status)-Shift From Baseline Value to Best Value During TreatmentBaseline ECOG 2, During Treatment ECOG 111 Participants
Secondary

Clinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During Treatment

ECOG performance status was measured on a 4 point scale to assess participant's performance status. 0=Normal, fully functional; 1=Fatigue without significant decrease in daily activity; 2=Fatigue with significant impairment of daily activities or bed rest \<50% of waking hours; 3=Bed rest/sitting\>50% of waking hours; 4=Bedridden or unable to care for self, where higher score indicated worst performance status. Number of participants with Baseline ECOG PS score and corresponding changes to the worst values (categorized as: Baseline ECOG 0, During Treatment ECOG 1; Baseline ECOG 2, During Treatment ECOG 1; Baseline ECOG 0, During Treatment ECOG 2; Baseline ECOG 1, During Treatment ECOG 2; Baseline ECOG 0, During Treatment ECOG 3; Baseline ECOG 1, During Treatment ECOG 3; Baseline ECOG 2, During Treatment ECOG 3) are reported.

Time frame: At baseline, during treatment (up to 120 weeks)

Population: Analysis was performed on AT population. Data for this outcome measure was planned to be collected and analyzed for a combined arm of overall Phase 1 AT population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 0, During Treatment ECOG 18 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 2, During Treatment ECOG 11 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 0, During Treatment ECOG 23 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 1, During Treatment ECOG 220 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 0, During Treatment ECOG 31 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 1, During Treatment ECOG 32 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Number of Participants With Eastern Cooperative Oncology Group Performance Status (Karnofsky Performance Status)-Shift From Baseline Value to Worst Value During TreatmentBaseline ECOG 2, During Treatment ECOG 31 Participants
Secondary

Clinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) Criteria

OR defined as participants with complete response (CR) or partial response (PR) as best overall response (BOR). Clinical benefit: participants with minimal response (MR) or better as BOR. BOR: best sequential response from start of treatment through the entire study excluding any time point following start of other treatment. CR: negative immunofixation on serum and urine, disappearance of any soft tissue plasmacytomas, \<5% plasma cells in bone marrow aspirates, no increase in size or number of lytic bone lesions. PR: \>=50% reduction of serum M-protein, reduction in 24 h urinary M-protein by \>=90% or \<200mg, \>=50% reduction in size/number of soft tissue plasmacytomas, no increase in size or number of lytic bone lesions. MR: 25 to 49% reduction in serum M-protein, 50-89% reduction in 24h urine M-protein, 25-49% reduction in size of soft tissue plasmacytomas, no increase in size or number of lytic bone lesions.

Time frame: From the date of randomization to the date of first documentation of progression or death (due to any cause) (maximum duration: 120 weeks)

Population: Analysis was performed on all-treated population. Here, 'Overall number of participants analyzed' = participants evaluable for this outcome measure.

ArmMeasureGroupValue (NUMBER)
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR33.3 percentage of participants
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit33.3 percentage of participants
Phase 1: Isatuximab 3mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR0 percentage of participants
Phase 1: Isatuximab 3mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit20.0 percentage of participants
Phase 1: Isatuximab 5mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR33.3 percentage of participants
Phase 1: Isatuximab 5mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit33.3 percentage of participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Clinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR28.0 percentage of participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Clinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit28.0 percentage of participants
Phase 1: Isatuximab 10 mg/kg QWClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR16.7 percentage of participants
Phase 1: Isatuximab 10 mg/kg QWClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit27.8 percentage of participants
Phase 1: Isatuximab 20mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR33.3 percentage of participants
Phase 1: Isatuximab 20mg/kg Q2WClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit33.3 percentage of participants
Phase 1: Isatuximab 20mg/kg QWClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit28.6 percentage of participants
Phase 1: Isatuximab 20mg/kg QWClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR14.3 percentage of participants
Phase 1: Isatuximab 20mg/kg QWClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaOR28.6 percentage of participants
Phase 1: Isatuximab 20mg/kg QWClinical Assessment: Phase 1: Percentage of Participants With Overall Response and Clinical Benefit: Assessed Using European Society for Blood and Marrow Transplantation (EBMT) CriteriaClinical benefit42.9 percentage of participants
Secondary

Clinical Assessment: Phase 1: Time to First Response (TTR)

TTR was defined as the time from first dose of isatuximab to first response (PR or better). PR: \>=50% reduction of serum M-protein, reduction in 24 h urinary M-protein by \>=90% or \<200mg, \>=50% reduction in size/number of soft tissue plasmacytomas, no increase in size or number of lytic bone lesions.

Time frame: From the date of first dose administration to the date of first response or death (due to any cause) (maximum duration: 120 weeks)

Population: Analysis was performed only on subset of participants who had response in Phase 1 and not for the reporting group with no response.

ArmMeasureValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WClinical Assessment: Phase 1: Time to First Response (TTR)0.95 months
Phase 1: Isatuximab 3mg/kg Q2WClinical Assessment: Phase 1: Time to First Response (TTR)6.41 months
Phase 1: Isatuximab 5mg/kg Q2WClinical Assessment: Phase 1: Time to First Response (TTR)2.52 monthsStandard Deviation 3.77
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Clinical Assessment: Phase 1: Time to First Response (TTR)1.96 monthsStandard Deviation 1.72
Phase 1: Isatuximab 10 mg/kg QWClinical Assessment: Phase 1: Time to First Response (TTR)1.38 monthsStandard Deviation 0.65
Phase 1: Isatuximab 20mg/kg Q2WClinical Assessment: Phase 1: Time to First Response (TTR)1.18 months
Phase 1: Isatuximab 20mg/kg QWClinical Assessment: Phase 1: Time to First Response (TTR)1.46 monthsStandard Deviation 0.77
Secondary

Immunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) Response

ADA response was categorized as: treatment induced and treatment boosted response. Treatment-induced ADA was defined as ADA that developed at any time during the ADA on-study observation period (defined as the time from the first isatuximab administration until end of Phase 1) in participants without preexisting ADA (defined as: ADA that were present in samples drawn before treatment), including participants without pre-treatment (before treatment) samples. Treatment boosted ADA was defined as pre-existing ADA that increased at least 2 titer steps between pre-treatment (before treatment) and post-treatment.

Time frame: Up to 120 weeks

Population: Analysis was performed on ADA evaluable population which included all treated participants with at least one ADA assessment with a reportable result during the ADA on-study observation period.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA2 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase 1: Isatuximab 3mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA0 Participants
Phase 1: Isatuximab 3mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase 1: Isatuximab 5mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA0 Participants
Phase 1: Isatuximab 5mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Immunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA1 Participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Immunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase 1: Isatuximab 10 mg/kg QWImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA1 Participants
Phase 1: Isatuximab 10 mg/kg QWImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase 1: Isatuximab 20mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA1 Participants
Phase 1: Isatuximab 20mg/kg Q2WImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase 1: Isatuximab 20mg/kg QWImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Phase 1: Isatuximab 20mg/kg QWImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA1 Participants
Phase 1: Isatuximab 20mg/kg QWImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment-induced ADA1 Participants
Phase 1: Isatuximab 20mg/kg QWImmunogenicity Assessment: Phase 1: Number of Participants With Treatment-Emergent And Treatment-Boosted Anti-drug Antibodies (ADA) ResponseTreatment boosted ADA0 Participants
Secondary

Immunogenicity Assessment: Phase 2 Stage 2: Number of Participants With Anti-drug Antibodies to Isatuximab

ADA response was categorized as: treatment induced and treatment boosted response. Treatment-induced ADA was defined as ADA that developed at any time during the ADA on-study observation period (defined as the time from the first isatuximab administration until end of Phase 2 Stage 2) in participants without preexisting ADA (defined as: ADA that were present in samples drawn before treatment), including participants without pre-treatment (before treatment) samples. Treatment boosted ADA was defined as pre-existing ADA that increased at least 2 titer steps between pre-treatment (before treatment) and post-treatment.

Time frame: Up to 97 weeks

Population: Analysis was performed on ADA evaluable population which included all treated participants with at least one ADA assessment with a reportable result during the ADA on-study observation period.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WImmunogenicity Assessment: Phase 2 Stage 2: Number of Participants With Anti-drug Antibodies to IsatuximabTreatment induced ADA1 Participants
Phase 1:Isatuximab <=1 mg/kg Q2WImmunogenicity Assessment: Phase 2 Stage 2: Number of Participants With Anti-drug Antibodies to IsatuximabTreatment boosted ADA0 Participants
Phase 1: Isatuximab 3mg/kg Q2WImmunogenicity Assessment: Phase 2 Stage 2: Number of Participants With Anti-drug Antibodies to IsatuximabTreatment induced ADA0 Participants
Phase 1: Isatuximab 3mg/kg Q2WImmunogenicity Assessment: Phase 2 Stage 2: Number of Participants With Anti-drug Antibodies to IsatuximabTreatment boosted ADA0 Participants
Secondary

Pharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma Markers

Serum/plasma markers included: tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1-β), interleukin 6 (IL-6) and interferon-gamma (IFN-Gamma). Due to change in planned analysis, data for high-sensitivity C-reactive protein (hs-CRP) and CD38 was not collected and analyzed.

Time frame: Cycle 1 Day 1

Population: Analysis was performed on all randomized participants who gave their informed consent, had received at least 1 dose (even incomplete) of isatuximab and had an assessable PD parameter. Here, 'number analyzed' = number of participants with available data for each category.

ArmMeasureGroupValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha163.181 picogram/milliliter (pg/mL)Standard Deviation 253.373
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta64.577 picogram/milliliter (pg/mL)Standard Deviation 227.399
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6139.234 picogram/milliliter (pg/mL)Standard Deviation 212.385
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma477.116 picogram/milliliter (pg/mL)Standard Deviation 1673.063
Phase 1: Isatuximab 3mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma5.376 picogram/milliliter (pg/mL)Standard Deviation 9.312
Phase 1: Isatuximab 3mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta29.741 picogram/milliliter (pg/mL)Standard Deviation 55.515
Phase 1: Isatuximab 3mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha179.783 picogram/milliliter (pg/mL)Standard Deviation 191.455
Phase 1: Isatuximab 3mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6261.732 picogram/milliliter (pg/mL)Standard Deviation 270.119
Phase 1: Isatuximab 5mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha352.974 picogram/milliliter (pg/mL)Standard Deviation 220.394
Phase 1: Isatuximab 5mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma25.806 picogram/milliliter (pg/mL)Standard Deviation 44.698
Phase 1: Isatuximab 5mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta7.527 picogram/milliliter (pg/mL)Standard Deviation 8.118
Phase 1: Isatuximab 5mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-673.899 picogram/milliliter (pg/mL)Standard Deviation 53.211
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Pharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha340.799 picogram/milliliter (pg/mL)Standard Deviation 341.1
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Pharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta299.058 picogram/milliliter (pg/mL)Standard Deviation 572.26
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Pharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6148.594 picogram/milliliter (pg/mL)Standard Deviation 175.719
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Pharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma445.772 picogram/milliliter (pg/mL)Standard Deviation 1043.982
Phase 1: Isatuximab 10 mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma568.806 picogram/milliliter (pg/mL)Standard Deviation 1022
Phase 1: Isatuximab 10 mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6173.004 picogram/milliliter (pg/mL)Standard Deviation 433.297
Phase 1: Isatuximab 10 mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta547.770 picogram/milliliter (pg/mL)Standard Deviation 1454.175
Phase 1: Isatuximab 10 mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha503.462 picogram/milliliter (pg/mL)Standard Deviation 479.813
Phase 1: Isatuximab 20mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma627.089 picogram/milliliter (pg/mL)Standard Deviation 1527.647
Phase 1: Isatuximab 20mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6-8.109 picogram/milliliter (pg/mL)Standard Deviation 45.845
Phase 1: Isatuximab 20mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta327.957 picogram/milliliter (pg/mL)Standard Deviation 759.305
Phase 1: Isatuximab 20mg/kg Q2WPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha342.664 picogram/milliliter (pg/mL)Standard Deviation 410.245
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma448.387 picogram/milliliter (pg/mL)Standard Deviation 569.499
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha307.319 picogram/milliliter (pg/mL)Standard Deviation 398.025
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6274.616 picogram/milliliter (pg/mL)Standard Deviation 234.752
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta305.914 picogram/milliliter (pg/mL)Standard Deviation 621.754
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-1 Beta293.307 picogram/milliliter (pg/mL)Standard Deviation 612.746
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIL-6165.295 picogram/milliliter (pg/mL)Standard Deviation 203.451
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersIFN Gamma1487.097 picogram/milliliter (pg/mL)Standard Deviation 2693.826
Phase 1: Isatuximab 20mg/kg QWPharmacodynamic (PD) Assessment: Phase 1: Change From Baseline in Serum/Plasma MarkersTNF alpha412.541 picogram/milliliter (pg/mL)Standard Deviation 243.169
Secondary

Pharmacokinetic Assessment: Phase 2 Stage 2: Accumulation Ratio of Isatuximab Based on Ctrough

Ctrough is the plasma concentration observed before treatment administration. For 1st category, the accumulation ratio was calculated by dividing Ctrough value of Cycle 2 Day 1 by Cycle 1 Day 8 and for second category, accumulation ratio was calculated by dividing Ctrough value of Cycle 4 Day 1 by Cycle 1 Day 8.

Time frame: Cycle 2, Day 1; Cycle 1, Day 8; Cycle 4, Day 1

Population: Analysis was performed on PK population. Here, 'number of participants analyzed' = participants evaluable for this outcome measure.

ArmMeasureGroupValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Accumulation Ratio of Isatuximab Based on CtroughCycle 2 Day 1/Cycle 1 Day 8521.38338 ratioStandard Deviation 4891.6339
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Accumulation Ratio of Isatuximab Based on CtroughCycle 4 Day 1/Cycle 1 Day 83.58378 ratioStandard Deviation 2.77398
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Accumulation Ratio of Isatuximab Based on CtroughCycle 2 Day 1/Cycle 1 Day 83.24370 ratioStandard Deviation 1.7386
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Accumulation Ratio of Isatuximab Based on CtroughCycle 4 Day 1/Cycle 1 Day 83.95950 ratioStandard Deviation 3.1931
Secondary

Pharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 1 Week Interval

Time frame: Pre-dose, at the end of infusion, 1 hour and 168 hours post dose on Day 1 of Cycle 1

Population: Analysis was performed on PK population which included participants who gave informed consent, received at least one dose (even if incomplete) of isatuximab, had an assessable PK parameter.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 1 Week Interval37096 mcg*hour/mLGeometric Coefficient of Variation 80
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 1 Week Interval35423 mcg*hour/mLGeometric Coefficient of Variation 88
Secondary

Pharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 2 Weeks Interval

Time frame: Cycle 1, Day 1: pre-dose, at the end of infusion, 168 and 336 hours post-infusion

Population: Analysis was performed on PK population.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 2 Weeks Interval91271 mcg*hour/mLGeometric Coefficient of Variation 78
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 2 Weeks Interval86761 mcg*hour/mLGeometric Coefficient of Variation 77
Secondary

Pharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 4 Weeks Interval

Time frame: Cycle 1, Day 1: pre-dose, at the end of infusion, 168, 336, and 672 hours post-infusion

Population: Analysis was performed on PK population.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 4 Weeks Interval236360 mcg*hour/mLGeometric Coefficient of Variation 72
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Area Under the Plasma Concentration Versus Time Curve of Isatuximab Over 4 Weeks Interval226372 mcg*hour/mLGeometric Coefficient of Variation 66
Secondary

Pharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)

Time frame: At Days 7, 14 and 28

Population: Analysis was performed on PK population.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)Day 7137 mcg/mLGeometric Coefficient of Variation 75
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)Day 14230 mcg/mLGeometric Coefficient of Variation 70
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)Day 28360 mcg/mLGeometric Coefficient of Variation 63
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)Day 7128 mcg/mLGeometric Coefficient of Variation 54
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)Day 14214 mcg/mLGeometric Coefficient of Variation 57
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic Assessment: Phase 2 Stage 2: Plasma Concentration of Isatuximab Before Treatment Administration (Ctrough)Day 28305 mcg/mLGeometric Coefficient of Variation 66
Secondary

Pharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)

Ceoi was defined as the plasma concentration of Isatuximab at end of infusion. Data for this outcome measure was planned to be collected and analyzed separately for dose 0.3 mg/kg, 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03 and 0.1 dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow). Analysis was performed on PK population: participants who gave informed consent, received at least one dose (even if incomplete) of isatuximab, had an assessable PK parameter.

Time frame: Cycle 1 Day 1 and Cycle 3 Day 1: At the end of infusion

Population: Here, Overall Number of Participants Analyzed=participants evaluable for this outcome measure and 0 in number analyzed field signifies none of the participant were evaluable because at Cycle 3, Day 1, only data for reporting arms Phase 1: Isatuximab 10mg/kg QW and Phase 1: Isatuximab 20mg/kg QW was planned to be collected and analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 12.08667 microgram per milliliter (mcg/mL)Standard Deviation 0.65567
Phase 1: Isatuximab 3mg/kg Q2WPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 113.18333 microgram per milliliter (mcg/mL)Standard Deviation 5.74464
Phase 1: Isatuximab 5mg/kg Q2WPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 144.22500 microgram per milliliter (mcg/mL)Standard Deviation 15.30651
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Pharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1125.50000 microgram per milliliter (mcg/mL)Standard Deviation 53.03301
Phase 1: Isatuximab 10 mg/kg QWPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1171.43333 microgram per milliliter (mcg/mL)Standard Deviation 50.18853
Phase 1: Isatuximab 20mg/kg Q2WPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1148.80000 microgram per milliliter (mcg/mL)Standard Deviation 18.48513
Phase 1: Isatuximab 20mg/kg QWPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1400.33333 microgram per milliliter (mcg/mL)Standard Deviation 52.51984
Phase 1: Isatuximab 20mg/kg QWPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1173.33333 microgram per milliliter (mcg/mL)Standard Deviation 20.64784
Phase 1: Isatuximab 20mg/kg QWPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 3 Day 1299.82500 microgram per milliliter (mcg/mL)Standard Deviation 220.83898
Phase 1: Isatuximab 20mg/kg QWPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 1 Day 1334.33333 microgram per milliliter (mcg/mL)Standard Deviation 98.28462
Phase 1: Isatuximab 20mg/kg QWPharmacokinetic (PK) Assessment: Phase 1: Plasma Concentration of Isatuximab Observed at the End of an Intravenous Infusion (Ceoi)Cycle 3 Day 1715.33333 microgram per milliliter (mcg/mL)Standard Deviation 188.01241
Secondary

Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale Score

EORTC QLQ-MY20 is a validated questionnaire to assess the overall quality of life in participants with MM. It has 4 subscales: body image, future perspective), and 2 symptoms scales (disease symptoms and side-effects of treatment). Disease symptoms subscale used 4-point scale ranged from 1= 'Not at All' to 4= 'Very Much'. Scores were averaged, and transformed to 0 -100 scale, where higher scores = more symptoms and lower health-related quality of life (HRQL) and lower score = less symptoms and more HRQL.

Time frame: Baseline, Day 1 of Cycles 2, 3, 4, 5, 6, 7, 8, 9, 10 and EOT (anytime up to 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed on AT population. Here, Overall Number of Participants Analyzed = participants evaluable for this outcome measure and 'number analyzed' = number of participants with available data for each category.

ArmMeasureGroupValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 2 day 15.56 score on a scaleStandard Deviation 18.36
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 3 day 17.94 score on a scaleStandard Deviation 11.94
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 4 day 18.33 score on a scaleStandard Deviation 13.22
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 5 day 1-6.94 score on a scaleStandard Deviation 10.52
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 6 day 18.33 score on a scaleStandard Deviation 7.17
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 7 day 12.78 score on a scaleStandard Deviation 3.93
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 8 day 1-5.56 score on a scaleStandard Deviation 7.86
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 9 day 15.56 score on a scaleStandard Deviation 7.86
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 10 day 10.00 score on a scaleStandard Deviation 0
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreEnd of treatment-9.72 score on a scaleStandard Deviation 19.44
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 4 day 1-3.89 score on a scaleStandard Deviation 16.98
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 10 day 10.00 score on a scaleStandard Deviation 19.25
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 5 day 10.51 score on a scaleStandard Deviation 19.95
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 6 day 11.23 score on a scaleStandard Deviation 23.53
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 7 day 1-3.70 score on a scaleStandard Deviation 22.95
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 8 day 1-2.78 score on a scaleStandard Deviation 23.5
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreEnd of treatment7.78 score on a scaleStandard Deviation 24.41
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 9 day 1-10.00 score on a scaleStandard Deviation 10.69
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 2 day 1-3.42 score on a scaleStandard Deviation 11.24
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 3 day 1-5.05 score on a scaleStandard Deviation 14.15
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 9 day 1-16.67 score on a scaleStandard Deviation 29.75
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 8 day 1-15.28 score on a scaleStandard Deviation 23.3
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreEnd of treatment24.07 score on a scaleStandard Deviation 22.45
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 2 day 10.93 score on a scaleStandard Deviation 13.91
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 5 day 1-9.03 score on a scaleStandard Deviation 17.04
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 7 day 1-18.06 score on a scaleStandard Deviation 21.93
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 10 day 1-15.28 score on a scaleStandard Deviation 30.56
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 3 day 1-5.98 score on a scaleStandard Deviation 16.89
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 6 day 1-15.08 score on a scaleStandard Deviation 20.96
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 4 day 1-10.00 score on a scaleStandard Deviation 16.93
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 6 day 1-6.94 score on a scaleStandard Deviation 10.52
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 9 day 1-6.94 score on a scaleStandard Deviation 12.32
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 7 day 1-11.11 score on a scaleStandard Deviation 11.79
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreEnd of treatment25.00 score on a scaleStandard Deviation 35.36
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 8 day 1-4.17 score on a scaleStandard Deviation 5.32
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 3 day 1-1.52 score on a scaleStandard Deviation 13.17
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 4 day 10.62 score on a scaleStandard Deviation 30.1
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 5 day 1-6.67 score on a scaleStandard Deviation 17.74
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 2 day 12.61 score on a scaleStandard Deviation 18.75
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Multiple Myeloma Specific Module With 20 Items (EORTC QLQ-MY20) Scores: Disease Symptom Subscale ScoreCycle 10 day 1-6.67 score on a scaleStandard Deviation 17.3
Secondary

Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale Scores

EQ-5D was a standardized HRQL questionnaire consisting of EQ-5D descriptive system and Visual Analogue Scale (VAS). EQ-5D VAS was used to record a participant's rating for his/her current health-related quality of life state and captured on a vertical VAS (0-100), where 0 = worst imaginable health state and 100 = best imaginable health state.

Time frame: Baseline, Day 1 of Cycles 4, 7, 10, 13, 16, 19, and EOT (anytime up to 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed on AT population. Here, Overall Number of Participants Analyzed = participants evaluable for this outcome measure and 'number analyzed' = number of participants with available data for each category.

ArmMeasureGroupValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 16 day 15.00 score on a scaleStandard Deviation 5.66
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresEnd of treatment-18.50 score on a scaleStandard Deviation 16.98
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 10 day 10.50 score on a scaleStandard Deviation 2.12
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 7 day 1-2.50 score on a scaleStandard Deviation 0.71
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 4 day 1-5.75 score on a scaleStandard Deviation 18.55
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 13 day 114.00 score on a scaleStandard Deviation 19.8
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresEnd of treatment-11.60 score on a scaleStandard Deviation 11.37
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 16 day 10.67 score on a scaleStandard Deviation 23.71
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 13 day 1-5.00 score on a scaleStandard Deviation 4
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 7 day 1-6.00 score on a scaleStandard Deviation 27.39
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 4 day 12.00 score on a scaleStandard Deviation 16.88
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 19 day 1-5.50 score on a scaleStandard Deviation 4.95
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 10 day 1-10.33 score on a scaleStandard Deviation 9.29
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 10 day 110.33 score on a scaleStandard Deviation 24.38
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 4 day 1-4.78 score on a scaleStandard Deviation 15.71
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 7 day 19.00 score on a scaleStandard Deviation 18.25
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 13 day 1-9.00 score on a scale
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresEnd of treatment-10.00 score on a scaleStandard Deviation 9.54
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 10 day 1-2.60 score on a scaleStandard Deviation 8.11
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 7 day 11.00 score on a scaleStandard Deviation 7.94
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 4 day 14.89 score on a scaleStandard Deviation 16.02
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresEnd of treatment-9.00 score on a scaleStandard Deviation 0
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Euro Quality of Life 5 Dimension (EQ-5D) Generic Health Status - Visual Analogue Scale ScoresCycle 13 day 1-5.00 score on a scale
Secondary

Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health Status

EORTC-QLQ-C30 is a cancer-specific instrument with 30 questions for evaluation of new chemotherapy and provides an assessment of participant reported outcome dimensions. First 28 questions used 4-point scale (1=not at all,2=a little,3=quite a bit,4=very much) for evaluating 5 functional scales (physical, role, emotional, cognitive, social), 3 symptom scales (fatigue, nausea/vomiting, pain) & other single items. For each item, high score = high level of symptomatology/problem. Last 2 questions represented participant's assessment of overall health & quality of life, coded on 7-point scale (1=very poor to 7=excellent). EORTC QLQ-C30 observed values and change from baseline for global health status (scoring of questions 29 & 30) and 5 functional scales, 3 symptom scales and other single items (scoring of questions 1 to 28). Answers were converted into grading scale, with values between 0 and 100. A high score represented a favorable outcome with a best quality of life for participant.

Time frame: Baseline, Day 1 of Cycles 2, 3, 4, 5, 6, 7, 8, 9, 10 and End of Treatment (EOT: anytime up to 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed on AT population. Here, Overall Number of Participants Analyzed = participants evaluable for this outcome measure and 'number analyzed' = number of participants with available data for each category.

ArmMeasureGroupValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 2 day 1-8.33 score on a scaleStandard Deviation 20.15
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 3 day 10.00 score on a scaleStandard Deviation 19.25
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 4 day 10.00 score on a scaleStandard Deviation 24.53
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 5 day 10.00 score on a scaleStandard Deviation 24.53
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 6 day 112.50 score on a scaleStandard Deviation 14.43
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 7 day 112.50 score on a scaleStandard Deviation 5.89
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 8 day 10.00 score on a scaleStandard Deviation 35.36
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 9 day 1-8.33 score on a scaleStandard Deviation 11.79
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 10 day 1-8.33 score on a scaleStandard Deviation 35.36
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusEnd of treatment3.33 score on a scaleStandard Deviation 33.64
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 4 day 1-5.30 score on a scaleStandard Deviation 21.5
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 10 day 1-16.67 score on a scaleStandard Deviation 22.05
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 5 day 10.69 score on a scaleStandard Deviation 15.27
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 6 day 1-10.19 score on a scaleStandard Deviation 25.27
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 7 day 1-3.57 score on a scaleStandard Deviation 15.85
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 8 day 1-11.11 score on a scaleStandard Deviation 18.76
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusEnd of treatment-11.67 score on a scaleStandard Deviation 13.94
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 9 day 1-10.00 score on a scaleStandard Deviation 19.9
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 2 day 12.22 score on a scaleStandard Deviation 16.51
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 3 day 1-0.76 score on a scaleStandard Deviation 16.44
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 9 day 14.17 score on a scaleStandard Deviation 14.43
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 8 day 14.17 score on a scaleStandard Deviation 15.96
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusEnd of treatment-11.11 score on a scaleStandard Deviation 20.97
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 2 day 1-3.95 score on a scaleStandard Deviation 20.67
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 5 day 16.48 score on a scaleStandard Deviation 21.15
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 7 day 18.33 score on a scaleStandard Deviation 11.79
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 10 day 18.33 score on a scaleStandard Deviation 11.79
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 3 day 16.55 score on a scaleStandard Deviation 19.66
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 6 day 15.95 score on a scaleStandard Deviation 13.36
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 4 day 16.06 score on a scaleStandard Deviation 21.11
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 6 day 110.42 score on a scaleStandard Deviation 7.98
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 9 day 16.25 score on a scaleStandard Deviation 10.49
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 7 day 16.67 score on a scaleStandard Deviation 6.97
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusEnd of treatment-12.50 score on a scaleStandard Deviation 5.89
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 8 day 16.25 score on a scaleStandard Deviation 10.49
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 3 day 1-2.08 score on a scaleStandard Deviation 15.54
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 4 day 17.41 score on a scaleStandard Deviation 8.78
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 5 day 15.00 score on a scaleStandard Deviation 4.56
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 2 day 10.00 score on a scaleStandard Deviation 15.39
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Change From Baseline in Health Related Quality of Life (HRQL) European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Scores: Global Health StatusCycle 10 day 13.33 score on a scaleStandard Deviation 7.45
Secondary

Phase 2 Stage 1: Duration of Response

DOR:Time from date of 1st IAC determined response (\>= PR) that was subsequently confirmed, to date of first IAC determined PD/death, whichever happened earlier. updated IMWG criteria- PR:\>=50% decrease in difference between involved and uninvolved FLC levels in place of M-protein criteria or a \>=50% reduction in plasma cells in place of M-protein if baseline was ≥30%. If present at baseline a \>=50% reduction in size of soft tissue plasmacytomas; PD: Increase of 25% from lowest response value in any of following: Serum M-protein \>=0.5 g/dL absolute increase and/or urine M-protein \>=200 mg/24 hours absolute increase and/or \>10 mg/dL absolute increase in difference between involved and uninvolved FLC levels, \>=10% bone marrow plasma cells (PCs), development of new bone lesions/soft tissue plasmacytomas or definite increase in size of existing bone lesions/soft tissue plasmacytomas, development of hypercalcemia (corrected serum calcium \>11·5 mg/dl) attributed to PC proliferation disorder.

Time frame: From the date of first response until disease progression or death or data cut-off (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed only on subset of population who had response in Phase 2 stage 1.

ArmMeasureValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Duration of Response1.91 months
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Duration of Response11.17 monthsStandard Deviation 5.77
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Duration of Response7.31 monthsStandard Deviation 3.65
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Duration of Response8.11 monthsStandard Deviation 2.33
Secondary

Phase 2 Stage 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)

Adverse event (AE) was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened during the on-treatment period which was defined as the period from the time of first dose of study treatment until 30 days after the last dose of study treatment.

Time frame: From Baseline up to 30 days after the last dose (maximum duration: 414 weeks for Stage 1a and 92 weeks for Stage 1b)

Population: Analysis was performed on AT population which included Participants who signed informed consent \& received at least 1 dose/even incomplete of isatuximab.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)22 Participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)24 Participants
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)25 Participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Number of Participants With Treatment Emergent Adverse Events (TEAEs)25 Participants
Secondary

Phase 2 Stage 1: Overall Survival (OS)

OS was defined as the time interval from the date of first Isatuximab administration to death from any cause. Analysis was performed by Kaplan-Meier method.

Time frame: From the date of randomization to date of death from any cause (maximum duration 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed on AT population.

ArmMeasureValue (MEDIAN)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Overall Survival (OS)15.277 months
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Overall Survival (OS)18.628 months
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Overall Survival (OS)NA months
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Overall Survival (OS)NA months
Secondary

Phase 2 Stage 1: Percentage of Participants With Clinical Benefit

Clinical benefit: participants with sCR, CR, VGPR, PR or MR as per IMWG criteria, determined by IAC. CR: negative immunofixation on serum & urine, disappearance of any soft tissue plasmacytomas,\<5% PCs in bone marrow aspirates. sCR: CR + normal FLC ratio (0.26-1.65), absence of clonal cells in bone marrow biopsy. VGPR: serum & urine M-component detectable by immunofixation, not on electrophoresis/,\>=90% reduction in serum M-component plus urine M-component level \<100mg/24hours; PR: ≥50% reduction of serum M-Protein and reduction in urinary M-protein by ≥90% or to \<200 mg/24 hours, ≥50% decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria or a ≥50% reduction in plasma cells in place of M-protein if baseline was ≥30%. If present at baseline, ≥50% size reduction in soft tissue plasmacytomas. MR:\>=25 but \<49% reduction in serum M-protein, reduction in 24h urine M-protein by 50-89%, 25-49% size reduction in soft tissue plasmacytomas.

Time frame: From the date of randomization to the date of first documentation of progression or death (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed on AT population.

ArmMeasureValue (NUMBER)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Percentage of Participants With Clinical Benefit4.3 percentage of participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Percentage of Participants With Clinical Benefit41.7 percentage of participants
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Percentage of Participants With Clinical Benefit32.0 percentage of participants
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Percentage of Participants With Clinical Benefit36.0 percentage of participants
Secondary

Phase 2 Stage 1: Progression Free Survival (PFS)

PFS was defined as the time interval from the date of first isatuximab administration to the date of the first IAC-confirmed disease progression (PD) or date of death due to any cause, whichever came first. As per IMWG criteria, PD: Increase of \> 25% from lowest response value in any one or more of the following: Serum M-component and/or (the absolute increase must be \> 0.5 g/dL), Urine M-component and/or (the absolute increase must be \> 200 mg/24 h), \> 10mg/dL decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria, \>10% absolute percentage of bone marrow plasma cell, definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas, development of hypercalcemia (corrected serum calcium \> 11.5 mg/dL or 2.65 mmol/L) that attributed solely to the plasma cell proliferative disorder. Analysis was performed by Kaplan-Meier method.

Time frame: From the date of the first dose administration until progression or death, whichever occurred first (maximum duration: 77 weeks for Stage 1a arms and 53 weeks for stage 1b arm)

Population: Analysis was performed on AT population.

ArmMeasureValue (MEDIAN)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 1: Progression Free Survival (PFS)2.1 months
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 1: Progression Free Survival (PFS)9.6 months
Phase 1: Isatuximab 5mg/kg Q2WPhase 2 Stage 1: Progression Free Survival (PFS)4.4 months
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)Phase 2 Stage 1: Progression Free Survival (PFS)3.6 months
Secondary

Phase 2 Stage 2: Duration of Response

DOR: Time from date of 1st IAC determined response (\>= PR) that was subsequently confirmed, to date of 1st IAC determined PD or death, whichever happened earlier. As per updated IMWG criteria-PR: ≥50% reduction of serum M-Protein and reduction in urinary M-protein by ≥90% or to \<200 mg/24 hours. ≥50% decrease in difference between involved and uninvolved FLC levels in place of M-protein criteria or ≥50% reduction in plasma cells in place of M-protein if baseline was ≥30%. If present at baseline ≥50% reduction in size of soft tissue plasmacytomas; PD: Increase of \>25% from lowest response value in any one of following: Serum M-component (absolute increase must be \>0.5 g/dL)4 and/or Urine M-component (absolute increase must be \>200 mg/24 h) and/or \>10 mg/dL absolute increase in difference between involved and uninvolved FLC levels, \>=10% bone marrow plasma cell, development of hypercalcemia (corrected serum calcium \>11.5 mg/dL) attributed solely to plasma cell proliferative disorder.

Time frame: From the date of first response until disease progression or death or data cut-off (maximum duration: 97 weeks)

Population: Analysis was performed only on subset of population who had response in Phase 2 stage 2.

ArmMeasureValue (MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 2: Duration of Response8.6 monthsStandard Deviation 5.2
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 2: Duration of Response10.9 monthsStandard Deviation 4.6
Secondary

Phase 2 Stage 2: Number of Participants With Treatment Emergent Adverse Events (TEAEs)

AE was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened during the on-treatment period which was defined as the period from the time of first dose of study treatment until 30 days after the last dose of study treatment.

Time frame: From Baseline up to 30 days after the last dose (maximum duration: 301 weeks)

Population: Analysis was performed on AT population which included participants who signed informed consent \& received at least 1 dose/even incomplete of isatuximab.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 2: Number of Participants With Treatment Emergent Adverse Events (TEAEs)101 Participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 2: Number of Participants With Treatment Emergent Adverse Events (TEAEs)51 Participants
Secondary

Phase 2 Stage 2: Overall Survival

OS was defined as the time interval from the date of first Isatuximab administration to death from any cause. Analysis was performed by Kaplan-Meier method.

Time frame: From the date of randomization to date of death from any cause (maximum duration: 97 weeks)

Population: Analysis was performed on AT population.

ArmMeasureValue (MEDIAN)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 2: Overall Survival18.92 months
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 2: Overall Survival17.25 months
Secondary

Phase 2 Stage 2: Percentage of Participants With Clinical Benefit

Clinical benefit:participants with sCR, CR, VGPR, PR or MR, per IMWG criteria, determined by IAC. CR:negative immunofixation on serum & urine, disappearance of any soft tissue plasmacytomas,\<5% plasma cells in bone marrow aspirates,normal FLC ratio(0.26-1.65) in participants with only FLC disease.sCR:CR+normal FLC ratio, absence of clonal cells in bone marrow biopsy.VGPR:serum & urine M-component detectable by immunofixation, not on electrophoresis/,\>=90% reduction in serum M-component plus urine M-component level \<100mg/24h/,\>=90% decrease in difference between involved and uninvolved FLC levels; PR:\>=50% reduction of serum M-protein, reduction in 24h urinary M-protein by \>=90%/\<200mg/24h,\>50% decrease in difference between involved and uninvolved FLC in place of M-protein criteria, \>=50% reduction in size/number of soft tissue plasmacytomas. MR:\>=25 but \<49% reduction in serum M-protein,reduction in 24h urine M-protein by 50-89%, 25-49% reduction in size of soft tissue plasmacytomas

Time frame: From the date of randomization to the date of first documentation of progression or death (maximum duration: 97 weeks )

Population: Analysis was performed on AT population.

ArmMeasureValue (NUMBER)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 2: Percentage of Participants With Clinical Benefit43.1 percentage of participants
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 2: Percentage of Participants With Clinical Benefit54.5 percentage of participants
Secondary

Phase 2 Stage 2: Progression Free Survival

PFS was defined as the time interval from the date of first isatuximab administration to the date of the first IAC-confirmed disease progression or the date of death due to any cause, whichever came first. As per IMWG criteria, PD: Increase of \>25% from lowest response value in any one of the following: Serum M-component (the absolute increase must be \>0.5 g/dL)4 and/or Urine M-component (the absolute increase must be \>200 mg/24 h) and/or \>10 mg/dL decrease in the difference between involved and uninvolved FLC levels in place of the M-protein criteria, ≥10% bone marrow plasma cell, development of hypercalcemia (corrected serum calcium \>11.5 mg/dL) attributed solely to the plasma cell proliferative disorder. Analysis was performed by Kaplan-Meier method.

Time frame: From the date of the first dose administration until progression or death, whichever occurred first (maximum duration: 97 weeks)

Population: Analysis was performed on AT population.

ArmMeasureValue (MEDIAN)
Phase 1:Isatuximab <=1 mg/kg Q2WPhase 2 Stage 2: Progression Free Survival4.86 months
Phase 1: Isatuximab 3mg/kg Q2WPhase 2 Stage 2: Progression Free Survival10.15 months
Secondary

PK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of Isatuximab

Data for this outcome measure was planned to be collected and analyzed separately for dose 0.3 mg/kg, 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03 and 0.1 dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow). Analysis was performed on PK population.

Time frame: For Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 168 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 168 hr post-infusion

Population: Here, Overall Number of Participants Analyzed=participants evaluable for this outcome measure and 0 in number analyzed field signifies none of the participant were evaluable because at Cycle 3, Day 1, only data for reporting arms Phase 1: Isatuximab 10mg/kg QW and Phase 1: Isatuximab 20mg/kg QW was planned to be collected and analyzed.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 12.00 mcg/mLGeometric Coefficient of Variation 31
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 112.4 mcg/mLGeometric Coefficient of Variation 45
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 153.7 mcg/mLGeometric Coefficient of Variation 28
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 1126 mcg/mL
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 1181 mcg/mLGeometric Coefficient of Variation 48
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 1154 mcg/mLGeometric Coefficient of Variation 13
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 1457 mcg/mLGeometric Coefficient of Variation 28
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 1181 mcg/mLGeometric Coefficient of Variation 20
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 3 Day 1265 mcg/mLGeometric Coefficient of Variation 67
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 1 Day 1343 mcg/mLGeometric Coefficient of Variation 29
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Maximum Observed Plasma Concentration (Cmax) of IsatuximabCycle 3 Day 1712 mcg/mLGeometric Coefficient of Variation 27
Secondary

PK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3

Data for this outcome measure was planned to be collected and analyzed only for dose 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03, 0.1 and 0.3 mg/kg dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow).

Time frame: Week 1, 2 and 3

Population: Analysis was performed on PK population. Here, 'number analyzed' = number of participants with available data for each category.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 10.00223 mcg/mLGeometric Coefficient of Variation 86
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 30.000283 mcg/mLGeometric Coefficient of Variation 145
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 20.000800 mcg/mLGeometric Coefficient of Variation 173
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 30.460 mcg/mLGeometric Coefficient of Variation 121
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 20.181 mcg/mLGeometric Coefficient of Variation 136
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 11.44 mcg/mLGeometric Coefficient of Variation 85
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 342.7 mcg/mLGeometric Coefficient of Variation 73
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 115.3 mcg/mLGeometric Coefficient of Variation 90
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 21.39 mcg/mLGeometric Coefficient of Variation 116
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 127.6 mcg/mLGeometric Coefficient of Variation 81
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 21.97 mcg/mLGeometric Coefficient of Variation 145
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 34.18 mcg/mLGeometric Coefficient of Variation 133
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 28.31 mcg/mLGeometric Coefficient of Variation 77
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 144.2 mcg/mLGeometric Coefficient of Variation 52
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 318.6 mcg/mLGeometric Coefficient of Variation 71
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 255.1 mcg/mLGeometric Coefficient of Variation 63
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 120.7 mcg/mLGeometric Coefficient of Variation 63
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 375.9 mcg/mLGeometric Coefficient of Variation 78
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 263.9 mcg/mLGeometric Coefficient of Variation 46
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 1113 mcg/mLGeometric Coefficient of Variation 37
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 391.0 mcg/mLGeometric Coefficient of Variation 52
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 1108 mcg/mLGeometric Coefficient of Variation 33
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 2194.8 mcg/mLGeometric Coefficient of Variation 36
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Plasma Concentration of Isatuximab at Week 1, 2 and 3Week 3347.3 mcg/mLGeometric Coefficient of Variation 36
Secondary

PK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)

Data for this outcome measure was planned to be collected and analyzed only for dose 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03, 0.1 and 0.3 mg/kg dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow).

Time frame: For Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 336 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 336 hr post-infusion

Population: Analysis was performed on PK population. Here, Overall Number of Participants Analyzed = participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)222 mcg*hour/mLGeometric Coefficient of Variation 80
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)3076 mcg*hour/mLGeometric Coefficient of Variation 35
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)9546 mcg*hour/mLGeometric Coefficient of Variation 70
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)14876 mcg*hour/mLGeometric Coefficient of Variation 64
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)18967 mcg*hour/mLGeometric Coefficient of Variation 44
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)30187 mcg*hour/mLGeometric Coefficient of Variation 40
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)48003 mcg*hour/mLGeometric Coefficient of Variation 31
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First 2 Weeks (0-336 Hours) (AUC2W)71174 mcg*hour/mLGeometric Coefficient of Variation 29
Secondary

PK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)

Data for this outcome measure was planned to be collected and analyzed only for dose 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03, 0.1 and 0.3 mg/kg dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow).

Time frame: For Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 168 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 168 hr post-infusion

Population: Analysis was performed on PK population. Here, Overall Number of Participants Analyzed = participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)222 mcg*hour/mLGeometric Coefficient of Variation 80
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)2624 mcg*hour/mLGeometric Coefficient of Variation 24
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)7174 mcg*hour/mLGeometric Coefficient of Variation 54
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)11566 mcg*hour/mLGeometric Coefficient of Variation 48
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)13480 mcg*hour/mLGeometric Coefficient of Variation 38
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)12680 mcg*hour/mLGeometric Coefficient of Variation 35
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)32739 mcg*hour/mLGeometric Coefficient of Variation 28
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Predicted Cumulative Area Under the Plasma Concentration Curve (AUC) of Isatuximab Over the First Week (0-168 Hours) (AUC1W)28405 mcg*hour/mLGeometric Coefficient of Variation 27
Secondary

PK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of Isatuximab

Data for this outcome measure was planned to be collected and analyzed separately for dose 0.3 mg/kg, 1 mg/kg and not for 0.0001, 0.001, 0.01, 0.03 and 0.1 dose levels (reported under one arm, i.e. Phase 1: Isatuximab \<=1mg/kg in participant flow). Analysis was performed on PK population.

Time frame: For Q2W:Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 3, 7, 24, 48 and 168 hr post-infusion; For QW: Cycle 1,Day 1: pre-dose, 15 min after start of infusion, at the end of infusion, 4, 24, 48, 72 and 168 hr post-infusion

Population: Here, Overall Number of Participants Analyzed=participants evaluable for this outcome measure and 0 in number analyzed field signifies none of the participant were evaluable because at Cycle 3, Day 1, only data for reporting arms Phase 1: Isatuximab 10mg/kg QW and Phase 1: Isatuximab 20mg/kg QW was planned to be collected and analyzed.

ArmMeasureGroupValue (MEDIAN)
Phase 1:Isatuximab <=1 mg/kg Q2WPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 12.49 hours
Phase 1: Isatuximab 3mg/kg Q2WPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 14.35 hours
Phase 1: Isatuximab 5mg/kg Q2WPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 16.99 hours
Phase1:Isatuximab (CD38+HM and Standard Risk Multiple Myeloma)PK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 17.65 hours
Phase 1: Isatuximab 10 mg/kg QWPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 14.28 hours
Phase 1: Isatuximab 20mg/kg Q2WPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 14.92 hours
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 15.87 hours
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 12.25 hours
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 3 Day 14.30 hours
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 1 Day 16.83 hours
Phase 1: Isatuximab 20mg/kg QWPK Assessment: Phase 1: Time to Reach Maximum Plasma Concentration Observed (Tmax) of IsatuximabCycle 3 Day 18.07 hours

Source: ClinicalTrials.gov · Data processed: Mar 12, 2026