NCT05651932 · K36 Therapeutics, Inc.
A Study of an MMSET Inhibitor in Patients With Relapsed and Refractory Multiple Myeloma
What this study is about
A Phase I study to evaluate the safety of a novel, taken by mouth available, selective, and potent small molecule inhibitor of the histone lysine methyl transferase MMSET (also known as NSD2/WHSC1) to prevent the dimethylation of H3K36 in adult patients with relapsed or refractory multiple myeloma (RRMM).
View original scientific description
A Phase I study to evaluate the safety of a novel, orally available, selective, and potent small molecule inhibitor of the histone lysine methyl transferase MMSET (also known as NSD2/WHSC1) to prevent the dimethylation of H3K36 in adult patients with relapsed or refractory multiple myeloma (RRMM).
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- for Dose-Expansion:
- ≥ 18 years of age
- ECOG score ≤ 1
- Multiple myeloma (as per IMWG)
- Prior therapy for MM: Participants must have received at least 1 and up to 3 prior lines of therapy as defined by IMWG, and the following drug classes: PI, IMiD, and anti-CD38 antibody. For mezigdomide combination Cohorts B1 and B2, participants must have received at least 2 prior lines of therapy
- Participants must have a confirmed diagnosis of progressive MM (per IMWG), t(4;14) confirmed by fluorescence in situ hybridization (FISH) testing performed in a centralized Clinical Laboratory Improvement Amendments (CLIA) accredited laboratory via fresh tumor biopsy.
- Measurable disease, including at least 1 of the following criteria:
- Serum M protein ≥ 0.50 g/dL (by SPEP)
- Serum IgA ≥ 0.50 g/dL (IgA myeloma patients)
- Urine M protein ≥ 200 mg/24 h (by UPEP)
- sFLC involved light chain ≥ 10 mg/dL (100 mg/L) (patients with abnormal sFLC ratio)
- Bone marrow plasma cells ≥ 30% (if only criterion for measurability)
- Agreement to enroll into the REMS program (Cohort D- pomalidomide cohort only) Key
Exclusion criteria
- for Dose-Expansion:
- Treatment with the following therapies in the specified time period prior to first dose:
- Patients in Cohorts B1 and B2 must not have received prior mezigdomide treatment
- Carfilzomib in the immediate last prior line of therapy for patients enrolled in Cohorts C1 and C2
- Pomalidomide in the immediate last prior line of therapy for patients enrolled in cohort D
- Radiation, chemotherapy, immunotherapy, or any other anticancer therapy ≤ 2 weeks
- Cellular therapies ≤ 8 weeks
- Autologous transplant \< 100 days
- Allogenic transplant ≤ 6 months, or \> 6 months with active GVHD
- Major surgery ≤ 4 weeks
- Current plasma cell leukemia, POEMS (polyneuropathy, organomegaly, endocrinopathy, and skin changes) syndrome, solitary bone lesion or bone lesions as the only evidence for plasma cell dyscrasia, myelodysplastic syndrome or a myeloproliferative neoplasm or light chain amyloidosis
- Active CNS disease: participants with previously treated stable CNS disease are eligible, except for Cohorts B1 and B2 for which known CNS myeloma involvement is completely excluded.
- Inadequate bone marrow function
- Inadequate renal, hepatic, pulmonary, and cardiac function
- Active, ongoing, or uncontrolled systemic viral, bacterial, or fungal infection. Permitted prophylactic medications, antimicrobials or antiretroviral therapies defined in protocol.
- Use of acid reducing agents and strong inhibitors or inducers of CYP3A4 within 7 days or 5 half-lives (whichever is longer) prior to first dose
- Strong CYP1A2 inhibitors for patients receiving pomalidomide (Cohort D)
- Active malignancy not related to myeloma requiring therapy within \< 2 years prior to enrollment, or not in complete remission, with exceptions defined in protocol.
Where
- San Francisco, California
- Jacksonville, Florida
- Atlanta, Georgia
- Boston, Massachusetts
- Rochester, Minnesota
- Hackensack, New Jersey
- New York, New York
- Charlotte, North Carolina
- Durham, North Carolina
- Philadelphia, Pennsylvania
- Nashville, Tennessee
- Dallas, Texas
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 8, 2026 · Source of record for eligibility and locations