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Efficacy and Safety Study of SyB L-0501 for Patients With Multiple Myeloma

A Multicenter, Open-Label, Phase 2 Study of SyB L-0501 (Bendamustine Hydrochloride) for Patients With Multiple Myeloma

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01179490
Enrollment
5
Registered
2010-08-11
Start date
2010-09-30
Completion date
Unknown
Last updated
2013-03-18

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

Conditions

Multiple Myeloma

Keywords

Multiple Myeloma

Brief summary

The study objectives of this study are to determine the effects, safety, and pharmacokinetics of bendamustine for multiple myeloma to a regimen of bendamustine and prednisolone.

Detailed description

The study objectives of this study are to determine the effects, safety, and pharmacokinetics of bendamustine for untreated and maladjustment to hematopoietic stem cell transplantation (HSCT) multiple myeloma to a regimen of bendamustine and prednisolone.

Interventions

SyB L-0501 (150 mg/m2/day) will be administered by intravenous drip infusion for 60 min for 2 consecutive days and the course will be observed for the next 26 days. This is taken as one cycle and administration is repeated for 2-9 cycles (when a plateau is not reached after nine cycles, administration of up to an additional three cycles for a maximum of 12 cycles is possible).

DRUGprednisolone

Prednisolone will be administered (60 mg/m2/day) orally for 4 consecutive days and the course will be observed for the next 24 days.

Sponsors

SymBio Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to 79 Years
Healthy volunteers
No

Inclusion criteria

Patients are included in the study if all of the following criteria are met: Patients confirmed to have multiple myeloma (symptomatic myeloma) defined in the diagnostic criteria of the International Myeloma Working Group (IMWG). * Patients with measurable lesions * Patients with no history of treatment (no history of chemotherapy or radiotherapy) * Patients should not be considered candidates for high dose therapy/autologous stem cell transplantation due to coexistent medical conditions, advanced age, poor performance status, refusal of high dose chemotherapy, or other reasons as judged by the patient and/or physician. * Expected survival of at least 3 months * Patients aged between 20 and 79 years (at the time of provisional registration) * Performance status (P.S.) grade 0-2. P.S. 3 possible only for osteolytic lesions * Patients with adequately maintained organ function (e.g., bone marrow, heart, lungs, liver, kidneys,) * Patients from whom written consent to participate in this study has been obtained.

Exclusion criteria

Patients are excluded from participating in the study if 1 or more of the following criteria are met: * Patients with apparent infections (including viral infections) * Patients with serious complications (hepatic failure, renal failure, or diabetes with insulin administration) * Patients with complications or a medical history of serious cardiac disease (e.g., myocardial infarction, ischemic heart disease) within 2 years before preliminary registration. Patients with arrhythmia requiring treatment. * Patients with serious gastrointestinal symptoms (profound or serious nausea / vomiting or diarrhea, etc.) * Patients who were hepatitis B virus antigen (HBsAG)-positive, hepatitis C virus (HCV) antibody-positive or human immunodeficiency virus (HIV) antibody-positive * Patients with a serious bleeding tendency \[e.g., Disseminated intravascular coagulation (DIC)\] * Patients with interstitial pneumonia, pulmonary fibrosis or pulmonary emphysema requiring treatment, or such diseases in the past * Patients with apparent amyloidosis as a complication * Patients with clinical symptoms of invasion or suspected invasion of the central nervous system. * Patients with active multiple cancers * Patients who have or previously had autoimmune hemolytic anemia. * Patients administered this investigational drug in the past * Patients who received hematopoietic stem cell transplantation in the past. * Patients who received cytokines such as granulocyte colony stimulating factor (G-CSF) or erythropoietin or a blood transfusion within 1 week before the screening examination prior to preliminary registration for this study * Patients who were administered an investigational drug during a clinical study or an unapproved drug within 3 months prior to preliminary registration in this study * Patients with prior allergies to medications similar to the investigational drug (e.g., alkylating agents, or purine nucleotide analogs), mannitol or prednisolone * Patients with drug addiction, narcotic addiction or alcoholism. * Patients who were pregnant, breastfeeding women or who had a possibility to be pregnant * Patients who do not agree to contraception during the following periods. For males, during or for 6 months after completion of administration of the investigational drug. For females, during or for 3 months after completion of administration of the investigational drug * Patients whom the investigator or the sub-investigators considered to be inappropriate for the study

Design outcomes

Primary

MeasureTime frameDescription
Complete Response (CR) Rate [Based on the Modified Southwest Oncology Group (SWOG) Criteria]Up to 36 weeksThe proportion of subjects evaluated as CR was calculated. CR (modified SWOG) requires all of the followings: 1. Decline in serum myeloma protein by ≥75% to ≤25 g/L 2. Reduction in 24 h urinary protein by ≥90% to ≤200 mg/24 h 3. No increase in skeletal destruction 4. Serum calcium within normal range 5. No blood transfusion required in the previous 3 months

Secondary

MeasureTime frameDescription
Response Rate (Based on the IMWG Criteria)Up to 36 weeksThe proportion of subjects evaluated as response \[sCR + CR + very good partial response (VGPR) + Partial Response (PR)\] was calculated. VGPR (IMWG): Serum and urine M-protein detectable by immunofixation but not on electrophoresis or 90% or greater reduction in serum M-protein plus urine M-protein level \<100mg per 24 h PR (IMWG): ≥50% reduction of serum M-protein and reduction in 24 h urinary M-protein by ≥90% or to \<200mg per 24 h
CR Rate Based on the (Bladé) CriteriaUp to 36 weeksThe proportion of subjects evaluated as CR was calculated. CR (Bladé) requires all of the followings: 1. Absence of the original monoclonal paraprotein in serum and urine by immunofixation, maintained for a minimum of 6 weeks. The presence of oligoclonal bands consistent with oligoclonal immune reconstitution does not exclude CR. 2. \<5% plasma cells in a bone marrow aspirate and also on trephine bone biopsy, if biopsy is performed. If absence of monoclonal protein is sustained for 6 weeks it is not necessary to repeat the bone marrow, except in patients with non-secretory myeloma where the marrow examination must be repeated after an interval of at least 6 weeks to confirm CR. 3. No increase in size or number of lytic bone lesions (development of a compression fracture does not exclude response) 4. Disappearance of soft tissue plasmacytomas
Response Rate (Based on the Bladé Criteria)Up to 36 weeksThe proportion of subjects evaluated as response (CR + PR) was calculated. PR (Bladé) requires 1. or all of the others: 1. Some, but not all, of the criteria for CR are fulfilled 2. ≥50% reduction in the level of the serum monoclonal paraprotein, maintained for a minimum of 6 weeks. 3. Reduction in 24 h urinary light chain excretion either by ≥90% or to \<200 mg, maintained for a minimum of 6 weeks. 4. For patients with non-secretory myeloma only, ≥50% reduction in plasma cells in a bone marrow aspirate and on trephine biopsy, if biopsy is performed, maintained for a minimum of 6 weeks. 5. ≥50% reduction in the size of soft tissue plasmacytomas (by radiography or clinical examination). 6. No increase in size or number of lytic bone lesions (development of a compression fracture does not exclude response).
Response Rate (Based on the Modified SWOG Criteria)Up to 36 weeksThe proportion of subjects evaluated as response (CR + PR) was calculated. PR (SWOG) requires the followings: 1. Decline in myeloma protein of ≥25%-\<74% in serum myeloma protein 2. Reduction in 24h urinary myeloma protein of ≥25%-\<89% 3. No increase in skeletal destruction 4. Serum calcium within normal range
Progression-Free Survival (PFS)Up to 2 yearsPFS is the period from patient registration to either the date of recurrence, exacerbation, progression or death. Recurrence, exacerbation, progression were assessed from serum M-protein, urine M-protein, serum free light chain (FLC), the percentage of marrow plasma cells, disappearance of clonal plasma cells, plasma cell tumor in soft tissue, and bone lesion.
Time to Treatment Failure (TTF)Up to 2 yearsTTF is the period from patient registration to either the date of recurrence, exacerbation, progression, death or discontinuation of treatment.
Duration of Response (DOR)Up to 2 yearsDOR is the period from the date of achieving CR or PR to either the date of recurrence, exacerbation, progression or death.
Overall Survival (OS)Up to 2 yearsOS is the period from the date of patient registration to the date of death.
CR Rate [Based on the International Myeloma Working Group (IMWG) Criteria]Up to 36 weeksThe proportion of subjects evaluated as CR \[strict CR (sCR) + CR\] was calculated. sCR (IMWG): CR as defined below plus Normal FLC ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence CR (IMWG): Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and \<5% plasma cells in bone marrow
Number of Adverse Events, Related Adverse Events, Serious Adverse Events, and Related Serious Adverse EventsUp to 2 yearsAdverse events were evaluated using Common Terminology Criteria for Adverse Events (CTCAE) v4.02, Japan Clinical Oncology Group/Japan Society of Clinical Oncology (JCOG/JSCO) version, and were encoded using Medical Dictionary for Regulatory Activities (MedDRA).
Number of Subjects With Abnormality (Grade ≥3) in Laboratory Test ValuesUp to 2 yearsAbnormalities in laboratory test values in overall study period were analyzed. Severity of abnormalities were evaluated using CTCAE. grade 1 : mild grade 2 : moderate grade 3 : severe or medically significant but not immediately life-threatening grade 4 : life threatening or disabling grade 5 : death related to AE
Number of Abnormalities (Grade ≥3) in Laboratory Test ValuesUp to 2 yearsAbnormalities in laboratory test values in overall study period were analyzed. Severity of abnormalities were evaluated using CTCAE.
Pharmacokinetic Parameters (Cmax)On Day 1 onlyPlasma pharmacokinetics (Cmax) of unchanged bendamustine
Pharmacokinetic Parameters (Tmax)On Day 1 onlyPlasma pharmacokinetics (tmax) of unchanged bendamustine
Pharmacokinetic Parameters (AUC)On Day 1 onlyPlasma pharmacokinetics (AUC) of unchanged bendamustine
Pharmacokinetic Parameters (t1/2)On Day 1 onlyPlasma pharmacokinetics (t1/2) of unchanged bendamustine
Number of Subjects With Adverse Event, Related Adverse Event, Serious Adverse Event, and Related Serious Adverse EventUp to 2 yearsAdverse events were evaluated using Common Terminology Criteria for Adverse Events (CTCAE) v4.02, Japan Clinical Oncology Group/Japan Society of Clinical Oncology (JCOG/JSCO) version, and were encoded using Medical Dictionary for Regulatory Activities (MedDRA).

Countries

Japan

Participant flow

Participants by arm

ArmCount
SyB L-0501 + Prednisolone
SyB L-0501 (150 mg/m2/day) will be administered by intravenous drip infusion for 60 min for 2 consecutive days and the course will be observed for the next 26 days. This is taken as one cycle and administration is repeated for 2-9 cycles (when a plateau is not reached after nine cycles, administration of up to an additional three cycles for a maximum of 12 cycles is possible. Prednisolone (60 mg/m2/day) will be administered orally for 4 consecutive days and the course will be observed for the next 24 days.
5
Total5

Baseline characteristics

CharacteristicSyB L-0501 + Prednisolone
Age Continuous69.0 Year
STANDARD_DEVIATION 2.3
Age, Customized
20-29 years
0 Participants
Age, Customized
30-39 years
0 Participants
Age, Customized
40-49 years
0 Participants
Age, Customized
50-59 years
0 Participants
Age, Customized
60-69 years
3 Participants
Age, Customized
70-84 years
2 Participants
Associated symptom of the primary disease
No
0 Participants
Associated symptom of the primary disease
Yes
5 Participants
Body surface area1.470 m2
STANDARD_DEVIATION 0.185
Clinical stage [International staging system (ISS) category]
Stage I
0 Participants
Clinical stage [International staging system (ISS) category]
Stage II
3 Participants
Clinical stage [International staging system (ISS) category]
Stage III
2 Participants
Complications of multiple myeloma
No
0 Participants
Complications of multiple myeloma
Yes
5 Participants
Condition with symptoms of Multiple Myeloma
No
5 Participants
Condition with symptoms of Multiple Myeloma
Yes
0 Participants
Height151.40 cm
STANDARD_DEVIATION 8.53
Performance status (P.S.)
0
3 Participants
Performance status (P.S.)
1
0 Participants
Performance status (P.S.)
2
2 Participants
Performance status (P.S.)
3
0 Participants
Previous history of multiple myeloma
No
5 Participants
Previous history of multiple myeloma
Yes
0 Participants
Previous treatment of multiple myeloma
No
5 Participants
Previous treatment of multiple myeloma
Yes
0 Participants
Reason for not eligible for hematopoietic stem cell transplantation
Age 66 years or older
5 Participants
Reason for not eligible for hematopoietic stem cell transplantation
Other
0 Participants
Reason for not eligible for hematopoietic stem cell transplantation
Presence of cardiopulmonary dysfunction
0 Participants
Reason for not eligible for hematopoietic stem cell transplantation
Renal dysfunction
0 Participants
Serum β2M in clinical stage5.00 mg/L
STANDARD_DEVIATION 1.48
Sex: Female, Male
Female
2 Participants
Sex: Female, Male
Male
3 Participants
Weight52.40 kg
STANDARD_DEVIATION 10.41

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
5 / 5
serious
Total, serious adverse events
2 / 5

Outcome results

Primary

Complete Response (CR) Rate [Based on the Modified Southwest Oncology Group (SWOG) Criteria]

The proportion of subjects evaluated as CR was calculated. CR (modified SWOG) requires all of the followings: 1. Decline in serum myeloma protein by ≥75% to ≤25 g/L 2. Reduction in 24 h urinary protein by ≥90% to ≤200 mg/24 h 3. No increase in skeletal destruction 4. Serum calcium within normal range 5. No blood transfusion required in the previous 3 months

Time frame: Up to 36 weeks

ArmMeasureValue (NUMBER)
SyB L-0501 + PrednisoloneComplete Response (CR) Rate [Based on the Modified Southwest Oncology Group (SWOG) Criteria]40.0 Percentage of Participants
Secondary

CR Rate Based on the (Bladé) Criteria

The proportion of subjects evaluated as CR was calculated. CR (Bladé) requires all of the followings: 1. Absence of the original monoclonal paraprotein in serum and urine by immunofixation, maintained for a minimum of 6 weeks. The presence of oligoclonal bands consistent with oligoclonal immune reconstitution does not exclude CR. 2. \<5% plasma cells in a bone marrow aspirate and also on trephine bone biopsy, if biopsy is performed. If absence of monoclonal protein is sustained for 6 weeks it is not necessary to repeat the bone marrow, except in patients with non-secretory myeloma where the marrow examination must be repeated after an interval of at least 6 weeks to confirm CR. 3. No increase in size or number of lytic bone lesions (development of a compression fracture does not exclude response) 4. Disappearance of soft tissue plasmacytomas

Time frame: Up to 36 weeks

ArmMeasureValue (NUMBER)
SyB L-0501 + PrednisoloneCR Rate Based on the (Bladé) Criteria0.0 Percentage of participants
Secondary

CR Rate [Based on the International Myeloma Working Group (IMWG) Criteria]

The proportion of subjects evaluated as CR \[strict CR (sCR) + CR\] was calculated. sCR (IMWG): CR as defined below plus Normal FLC ratio and absence of clonal cells in bone marrow by immunohistochemistry or immunofluorescence CR (IMWG): Negative immunofixation on the serum and urine and disappearance of any soft tissue plasmacytomas and \<5% plasma cells in bone marrow

Time frame: Up to 36 weeks

ArmMeasureValue (NUMBER)
SyB L-0501 + PrednisoloneCR Rate [Based on the International Myeloma Working Group (IMWG) Criteria]0.0 Percentage of participants
Secondary

Duration of Response (DOR)

DOR is the period from the date of achieving CR or PR to either the date of recurrence, exacerbation, progression or death.

Time frame: Up to 2 years

ArmMeasureValue (MEDIAN)
SyB L-0501 + PrednisoloneDuration of Response (DOR)162.0 Days
Secondary

Number of Abnormalities (Grade ≥3) in Laboratory Test Values

Abnormalities in laboratory test values in overall study period were analyzed. Severity of abnormalities were evaluated using CTCAE.

Time frame: Up to 2 years

ArmMeasureGroupValue (NUMBER)
SyB L-0501 + PrednisoloneNumber of Abnormalities (Grade ≥3) in Laboratory Test ValuesGrade 3 abnormalities33 Events
SyB L-0501 + PrednisoloneNumber of Abnormalities (Grade ≥3) in Laboratory Test ValuesGrade 4 abnormalities39 Events
SyB L-0501 + PrednisoloneNumber of Abnormalities (Grade ≥3) in Laboratory Test ValuesGrade 5 abnormalities0 Events
Secondary

Number of Adverse Events, Related Adverse Events, Serious Adverse Events, and Related Serious Adverse Events

Adverse events were evaluated using Common Terminology Criteria for Adverse Events (CTCAE) v4.02, Japan Clinical Oncology Group/Japan Society of Clinical Oncology (JCOG/JSCO) version, and were encoded using Medical Dictionary for Regulatory Activities (MedDRA).

Time frame: Up to 2 years

ArmMeasureGroupValue (NUMBER)
SyB L-0501 + PrednisoloneNumber of Adverse Events, Related Adverse Events, Serious Adverse Events, and Related Serious Adverse EventsAdverse events166 Events
SyB L-0501 + PrednisoloneNumber of Adverse Events, Related Adverse Events, Serious Adverse Events, and Related Serious Adverse EventsRelated adverse events155 Events
SyB L-0501 + PrednisoloneNumber of Adverse Events, Related Adverse Events, Serious Adverse Events, and Related Serious Adverse EventsSerious adverse events4 Events
SyB L-0501 + PrednisoloneNumber of Adverse Events, Related Adverse Events, Serious Adverse Events, and Related Serious Adverse EventsRelated serious adverse events4 Events
Secondary

Number of Subjects With Abnormality (Grade ≥3) in Laboratory Test Values

Abnormalities in laboratory test values in overall study period were analyzed. Severity of abnormalities were evaluated using CTCAE. grade 1 : mild grade 2 : moderate grade 3 : severe or medically significant but not immediately life-threatening grade 4 : life threatening or disabling grade 5 : death related to AE

Time frame: Up to 2 years

ArmMeasureGroupValue (NUMBER)
SyB L-0501 + PrednisoloneNumber of Subjects With Abnormality (Grade ≥3) in Laboratory Test ValuesSubjects with Grade 3 abnormality5 Participants
SyB L-0501 + PrednisoloneNumber of Subjects With Abnormality (Grade ≥3) in Laboratory Test ValuesSubjects with Grade 4 abnormality5 Participants
SyB L-0501 + PrednisoloneNumber of Subjects With Abnormality (Grade ≥3) in Laboratory Test ValuesSubjects with Grade 5 abnormality0 Participants
Secondary

Number of Subjects With Adverse Event, Related Adverse Event, Serious Adverse Event, and Related Serious Adverse Event

Adverse events were evaluated using Common Terminology Criteria for Adverse Events (CTCAE) v4.02, Japan Clinical Oncology Group/Japan Society of Clinical Oncology (JCOG/JSCO) version, and were encoded using Medical Dictionary for Regulatory Activities (MedDRA).

Time frame: Up to 2 years

ArmMeasureGroupValue (NUMBER)
SyB L-0501 + PrednisoloneNumber of Subjects With Adverse Event, Related Adverse Event, Serious Adverse Event, and Related Serious Adverse EventSubjects with adverse event5 Participants
SyB L-0501 + PrednisoloneNumber of Subjects With Adverse Event, Related Adverse Event, Serious Adverse Event, and Related Serious Adverse EventSubjects with related adverse event5 Participants
SyB L-0501 + PrednisoloneNumber of Subjects With Adverse Event, Related Adverse Event, Serious Adverse Event, and Related Serious Adverse EventSubjects with serious adverse event2 Participants
SyB L-0501 + PrednisoloneNumber of Subjects With Adverse Event, Related Adverse Event, Serious Adverse Event, and Related Serious Adverse EventSubjects with related serious adverse event2 Participants
Secondary

Overall Survival (OS)

OS is the period from the date of patient registration to the date of death.

Time frame: Up to 2 years

ArmMeasureValue (MEDIAN)
SyB L-0501 + PrednisoloneOverall Survival (OS)205.0 Days
Secondary

Pharmacokinetic Parameters (AUC)

Plasma pharmacokinetics (AUC) of unchanged bendamustine

Time frame: On Day 1 only

ArmMeasureValue (MEAN)Dispersion
SyB L-0501 + PrednisolonePharmacokinetic Parameters (AUC)12315.992 ng・h/mLStandard Deviation 7900.579
Secondary

Pharmacokinetic Parameters (Cmax)

Plasma pharmacokinetics (Cmax) of unchanged bendamustine

Time frame: On Day 1 only

ArmMeasureValue (MEAN)Dispersion
SyB L-0501 + PrednisolonePharmacokinetic Parameters (Cmax)8795.769 ng/mLStandard Deviation 3907.46
Secondary

Pharmacokinetic Parameters (t1/2)

Plasma pharmacokinetics (t1/2) of unchanged bendamustine

Time frame: On Day 1 only

ArmMeasureValue (MEAN)Dispersion
SyB L-0501 + PrednisolonePharmacokinetic Parameters (t1/2)0.44 hStandard Deviation 0.152
Secondary

Pharmacokinetic Parameters (Tmax)

Plasma pharmacokinetics (tmax) of unchanged bendamustine

Time frame: On Day 1 only

ArmMeasureValue (MEAN)Dispersion
SyB L-0501 + PrednisolonePharmacokinetic Parameters (Tmax)1.00 hStandard Deviation 0
Secondary

Progression-Free Survival (PFS)

PFS is the period from patient registration to either the date of recurrence, exacerbation, progression or death. Recurrence, exacerbation, progression were assessed from serum M-protein, urine M-protein, serum free light chain (FLC), the percentage of marrow plasma cells, disappearance of clonal plasma cells, plasma cell tumor in soft tissue, and bone lesion.

Time frame: Up to 2 years

ArmMeasureValue (MEDIAN)
SyB L-0501 + PrednisoloneProgression-Free Survival (PFS)205.0 Days
Secondary

Response Rate (Based on the Bladé Criteria)

The proportion of subjects evaluated as response (CR + PR) was calculated. PR (Bladé) requires 1. or all of the others: 1. Some, but not all, of the criteria for CR are fulfilled 2. ≥50% reduction in the level of the serum monoclonal paraprotein, maintained for a minimum of 6 weeks. 3. Reduction in 24 h urinary light chain excretion either by ≥90% or to \<200 mg, maintained for a minimum of 6 weeks. 4. For patients with non-secretory myeloma only, ≥50% reduction in plasma cells in a bone marrow aspirate and on trephine biopsy, if biopsy is performed, maintained for a minimum of 6 weeks. 5. ≥50% reduction in the size of soft tissue plasmacytomas (by radiography or clinical examination). 6. No increase in size or number of lytic bone lesions (development of a compression fracture does not exclude response).

Time frame: Up to 36 weeks

ArmMeasureValue (NUMBER)
SyB L-0501 + PrednisoloneResponse Rate (Based on the Bladé Criteria)60.0 Percentage of participants
Secondary

Response Rate (Based on the IMWG Criteria)

The proportion of subjects evaluated as response \[sCR + CR + very good partial response (VGPR) + Partial Response (PR)\] was calculated. VGPR (IMWG): Serum and urine M-protein detectable by immunofixation but not on electrophoresis or 90% or greater reduction in serum M-protein plus urine M-protein level \<100mg per 24 h PR (IMWG): ≥50% reduction of serum M-protein and reduction in 24 h urinary M-protein by ≥90% or to \<200mg per 24 h

Time frame: Up to 36 weeks

ArmMeasureValue (NUMBER)
SyB L-0501 + PrednisoloneResponse Rate (Based on the IMWG Criteria)60.0 Percentage of participants
Secondary

Response Rate (Based on the Modified SWOG Criteria)

The proportion of subjects evaluated as response (CR + PR) was calculated. PR (SWOG) requires the followings: 1. Decline in myeloma protein of ≥25%-\<74% in serum myeloma protein 2. Reduction in 24h urinary myeloma protein of ≥25%-\<89% 3. No increase in skeletal destruction 4. Serum calcium within normal range

Time frame: Up to 36 weeks

ArmMeasureValue (NUMBER)
SyB L-0501 + PrednisoloneResponse Rate (Based on the Modified SWOG Criteria)60.0 Percentage of participants
Secondary

Time to Treatment Failure (TTF)

TTF is the period from patient registration to either the date of recurrence, exacerbation, progression, death or discontinuation of treatment.

Time frame: Up to 2 years

ArmMeasureValue (MEDIAN)
SyB L-0501 + PrednisoloneTime to Treatment Failure (TTF)205.0 Days

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026