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A Study to Assess Adverse Events and Change in Disease Activity of Intravenously (IV) Infused Etentamig (ABBV-383) in Combination With Anti-Cancer Regimens for the Treatment of Adult Participants With Relapsed/Refractory Multiple Myeloma

A Dose Escalation and Expansion Study of Etentamig (ABBV-383) in Combination With Anti-Cancer Regimens for the Treatment of Patients With Newly Diagnosed or Relapsed/Refractory Multiple Myeloma

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05259839
Enrollment
283
Registered
2022-03-02
Start date
2022-10-20
Completion date
2033-09-01
Last updated
2026-08-14

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

Conditions

Relapsed/Refractory Multiple Myeloma

Keywords

Relapsed/Refractory Multiple Myeloma, Pomalidomide, Dexamethasone, Lenalidomide, Daratumumab, Nirogacestat, Etentamig, ABBV-383, Cancer

Brief summary

Multiple myeloma (MM) is a plasma cell disease characterized by the growth of clonal plasma cells in the bone marrow. The purpose of this study is to assess the safety and toxicity of etentamig (ABBV-383) when co-administered with pomalidomide-dexamethasone (Pd), lenalidomide-dexamethasone (Rd), or daratumumab-dexamethasone (Dd), in adult participants with relapsed/refractory (R/R) multiple myeloma (MM). Adverse events and change in disease activity will be assessed. Etentamig is an investigational drug being developed for the treatment of R/R MM. Study doctors put the participants in groups called treatment arms. Etentamig co-administered with Pd, Rd, or Dd, will be explored. Each treatment arm receives a different treatment combination depending on stage of the study and eligibility. This study will include a dose escalation phase to determine the best dose of etentamig, followed by a dose expansion phase to confirm the dose. Approximately 320 adult participants with R/R MM will be enrolled in the study in approximately 48 sites worldwide. Participants will receive intravenous (IV) etentamig co-administered with oral/IV Pd, oral/IV Rd, or oral/IV/subcutaneous (SC) Dd in 28-day cycles. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at an approved institution (hospital or clinic). The effect of the treatment will be frequently checked by medical assessments, blood tests, questionnaires and side effects.

Interventions

Intravenous (IV) Infusion

DRUGDexamethasone

Oral; Tablet or IV Infusion

DRUGLenalidomide

Oral; Capsule

DRUGPomalidomide

Oral; Capsule

DRUGDaratumumab

Subcutaneous Injection (SC)

Sponsors

AbbVie
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Eastern Cooperative Oncology Group (ECOG) performance of \<= 2. * Must have confirmed diagnosis of Relapsed/Refractory (R/R) Multiple Myeloma (MM) with documented evidence of progression during or after the participant's last treatment regimen based on the investigator's determination of the International Myeloma Working Group (IMWG) criteria. * Must have measurable disease as determined by central lab as outlined in the protocol. * Must be naïve to treatment with Etentamig. * Must have never received BCMA-targeted therapy. Participants who have received targeted therapy against non-BCMA targets will not be excluded. * Arms A, B and C: Participant has received at least 3 prior lines of MM treatment. * Arm E: Participant has received 1-3 prior lines of MM treatment.

Exclusion criteria

* Received a peripheral autologous stem cell transplant (SCT) within 12 weeks, or an allogeneic SCT within 1 year of the first dose of study treatment. * Unresolved adverse event (AE)s \>= Grade 2 (National Cancer Institute \[NCI\] Common Terminology Criteria for Adverse Events \[CTCAE\] version 5.0) from prior anticancer therapy. * Has any of the following conditions: * Nonsecretory Multiple Myeloma (MM). * Active Plasma cell leukemia i.e., either 20% of peripheral white blood cells or \> 2.0 × 10\^9L circulating plasma cells by standard differential. * Waldenstrom's macroglobulinemia. * Light chain amyloidosis. * Polyneuropathy, organomegaly, endocrinopathy, monoclonal protein and skin changes (POEMS) syndrome. * Major surgery within 4 weeks prior to first dose or planned study participation. * Acute infections within 14 days prior to first dose of study requiring therapy (antibiotic, antifungal or antiviral). * Uncontrolled diabetes or hypertension within 14 days prior to first dose. * Peripheral neuropathy \>= Grade 3 or \>= Grade 2 with pain within 2 weeks prior to first dose.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants with Dose Limiting Toxicities (DLT) of EtentamigUp to approximately 28 DaysDLT events as described in the protocol will be assessed.
Number of Participants with Adverse Events (AEs)Up to Approximately 3 YearsAn AE is defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. A serious adverse event (SAE) is an event that results in death, is life-threatening, requires or prolongs hospitalization, results in a congenital anomaly, persistent or significant disability/incapacity or is an important medical event that, based on medical judgment, may jeopardize the participant and may require medical or surgical intervention to prevent any of the outcomes listed above.

Secondary

MeasureTime frameDescription
Overall Response Rate (ORR)Up to Approximately 3 YearsORR is defined as partial response (PR) + very good partial response (VGPR) + complete remission (CR) + stringent complete response (sCR); proportion of participants who achieved a PR or better.
Progression-Free Survival (PFS)Up to Approximately 3 YearsPFS is defined as the number of days from the date of first dose to the date of earliest disease progression or death.
Duration of Response (DOR)Up to Approximately 3 YearsDOR will be defined as the number of days from the date of first response (sCR, CR, VGPR, or PR) to the earliest recurrence, progressive disease, or death, whatever occurs first.
Time-to-Progression (TTP)Up to Approximately 3 YearsTTP is defined as the number of days from the date of first dose to the date of earliest disease progression.
Percentage of Participants with Minimal Residual Diseas (MRD) Negativity by Next-Generation Sequencing (NGS)Up to Approximately 3 YearsMRD negative status (threshold as assessed by NGS Adaptive Clonoseq) with \>= CR (per International Myeloma Working Group \[IMWG\] response criteria) prior to the initiation of new myeloma therapy.

Countries

Australia, Germany, Italy, Japan, Poland, Spain, United States

Contacts

STUDY_DIRECTORABBVIE INC.

AbbVie

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 15, 2026