An Open-Label, Multicenter, Phase 1 Study of IGM-2644 in Participants With Relapsed and/or Refractory Multiple Myeloma

What's the purpose of this trial?

This is a first in human, phase 1, multicenter, open-label study to determine the safety and tolerability of IGM-2644 as a single agent in participants with relapsed and/or refractory MM, for whom standard therapy does not exist, has proven to be ineffective or intolerable, or is considered inappropriate. Dose escalation and dose expansion cohorts will be enrolled to evaluate safety, preliminary efficacy, and further define a RP2D. The total length of the study, from screening of the first participant to the end of the study, is expected to be approximately 60 months.

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:

* Adults \> 18 years at time of consent
* ECOG performance status of 0 or 1
* Relapsed and/or refractory multiple myeloma after ≥ 3 prior lines; Must have failed treatment with an IMiD, PI, and anti-CD38 therapy
* Measurable disease per the IMWG response criteria
* Adequate marrow and organ function without transfusion or growth factor support within 7 days prior to screening
* Willing and able to undergo bone marrow aspirate and biopsy per protocol

Exclusion Criteria:

* Inability to comply with study and follow-up procedures
* History of clinically significant primary amyloidosis, plasma cell leukemia, Waldenstrom macroglobulinemia or myelodysplastic syndrome
* Received chemotherapy, biologics, or small molecule therapy within 21 days or 5 half-lives, whichever is shorter
* Use of any non-approved or investigational agent ≤ 4 weeks prior to the first dose of study drug.
* Received last prior anti-CD38 monoclonal antibody treatment within 28 days before first planned dose of the study drug
* Current Grade \> 1 toxicity, with the exception of Grade 2 peripheral neuropathy, alopecia, or toxicities from prior anti-tumor therapy that are considered irreversible
* Large-field radiotherapy within 28 days prior to Day 1 (radiation to a single site as concurrent therapy is allowed)
* Prior autologous stem cell transplant within 180 days prior to Day 1
* Prior allogeneic stem cell transplant

Additional Trial Information

Phase 1

Enrollment: 100 patients (estimated)

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Trial Locations

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City of Hope Comprehensive Cancer Center Beckman Research Institute

Duarte, CA

Open and Accepting


New York

Memorial Sloan Kettering Cancer Center

New York, NY

Not Yet Accepting


Sarah Cannon Tennessee Oncology- Nashville (25th Ave) Centennial Clinic

Nashville, TN

Open and Accepting


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