A Study of BMS-986393 (CC-95266) in Subjects With Relapsed and/or Refractory Multiple Myeloma BMS-986393

What's the purpose of this trial?

The purpose of this study is to evaluate the safety and preliminary efficacy of BMS-986393 (CC-95266) in participants with relapsed and/or refractory multiple myeloma (R/R MM).

This trial is currently open and accepting patients.

What will happen during the trial?

You may be able to join this trial if you:

The following criteria is a partial list of reasons why patients may be eligible to participate in this clinical trial. Further evaluation with a medical professional is required.

Inclusion Criteria:

  • Age ≥ 18 years
  • Participant has a diagnosis of multiple myeloma (MM) with relapsed and/or refractory disease Participants must have documented progressive disease on or within 12 months of completing treatment with the last anti-myeloma treatment regimen, except for participants with cellular therapy (eg, Chimeric antigen receptor (CAR) T-cell therapy) as their last treatment, who may enroll beyond 12 months
  • Participants must have received at least 3 prior anti-myeloma treatment regimens (note: induction with or without hematopoietic stem cell transplant (HSCT) and with or without maintenance therapy is considered one regimen), including:
    • Autologous stem cell transplant
    • A regimen that included an immunomodulatory agent (eg, thalidomide, lenalidomide, pomalidomide) and a proteasome inhibitor (eg, bortezomib, carfilzomib, ixazomib), either alone or combination
    • Anti-CD38 (eg, daratumumab), either alone or combination
  • Measurable disease
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Adequate organ function

Exclusion Criteria:

  • Known active or history of central nervous system (CNS) involvement of MM
  • Active or history of plasma cell leukemia, Waldenstrom's macroglobulinemia, POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, skin changes) syndrome, or clinically significant amyloidosis
  • Active autoimmune disease requiring immunosuppressive therapy
  • History or presence of clinically significant CNS pathology such as seizure disorder, aphasia, stroke, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, organic brain syndrome, or psychosis
  • Other protocol-defined inclusion/exclusion criteria apply

Additional Trial Information

Phase 1

Enrollment: 75 patients (estimated)

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Published Results

Clinical Activity of BMS-986393 (CC-95266), a G Protein–Coupled Receptor Class C Group 5 Member D (GPRC5D)–Targeted Chimeric Antigen Receptor (CAR) T Cell Therapy, in Patients with Relapsed and/or Refractory (R/R) Multiple Myeloma (MM): First Results from a Phase 1, Multicenter, Open-Label Study

December 10, 2022

As of May 24, 2022, 21 pts enrolled and 17 pts received BMS-986393 at doses of 25 (n = 5), 75 (n = 9), and 150 (n = 3) × 106 CAR T cells. Among treated pts, 8 (47%) pts had high-risk cytogenetics (del[17p], t[4;14], and/or t[14;16]) and 8 (47%) pts had extramedullary plasmacytomas. Seven (41%) pts received prior BCMA-targeted therapies, including 6 (35%) pts treated with BCMA-directed CAR T cell therapy (Table). Four (24%) pts had penta-refractory MM.

Grade 3/4 treatment-emergent adverse events related to BMS-986393 (TRAEs) were reported in 11/17 (65%) pts; of these, the most frequent were neutropenia (41%) and thrombocytopenia (35%). TRAEs consistent with on-target, off-tumor activity affecting the skin (18%) and nails (12%), as well as dysgeusia/dysphagia (12%) were reported, all grade 1. Dose-limiting toxicities of prolonged (out to day 42) neutropenia and/or thrombocytopenia were reported in 2 pts; MTD has not been exceeded. Cytokine release syndrome (CRS) was reported in 11/17 (65%) pts, all grade 1/2 (median onset, day 3 [range, 2–4]; median duration, 2 days). Immune effector cell–associated neurotoxicity syndrome (ICANS)–type neurotoxicity was reported in 2/17 (12%) pts, both grade 1 (duration, 1–3 days), and was reversible with steroid treatment (Table).

Responses were reported in 12 of 14 pts evaluable for initial (1‑month) clinical response (overall response rate, 86%), including in 4/6 and 3/5 pts treated with prior BCMA‑directed and BCMA-directed CAR T cell therapies, respectively. Median duration of response has not been reached for any dose level, with median follow-up of 4.0 months (range, 1.0–13.1; Table).At the time of analysis, 15/17 (88%) pts remained in follow-up; 2 (12%) pts discontinued due to progressive disease.

In preliminary pharmacodynamic analyses, greater reductions in soluble BCMA levels were associated with increasing dose from 25 to 75 × 106 CAR T cells, and all 3 pts with complete response (CR) at the 25 × 106 CAR T-cell dose level were minimal residual disease (MRD)–negative (10−5 depth) at month 3, with follow-up ongoing.

Preliminary cellular pharmacokinetic analyses demonstrated a dose-dependent increase in BMS-986393 exposure

Trial Locations

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University of Alabama at Birmingham O'Neal Comprehensive Cancer Center at UAB

Birmingham, AL

Open and Accepting


City of Hope Comprehensive Cancer Center Beckman Research Institute

Duarte, CA

Open and Accepting




Dana-Farber Cancer Institute

Boston, MA

Open and Accepting

New York

Memorial Sloan Kettering Cancer Center

New York, NY

Not Yet Accepting

Mount Sinai Hospital Tisch Cancer Institute

New York, NY

Open and Accepting


Sarah Cannon TriStar Centennial Medical Center

Nashville, TN

Open and Accepting



Swedish - Cherry Hill Campus Cherry Hill Campus

Seattle, WA

Open and Accepting
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