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Mezigdomide, Carfilzomib, and Dexamethasone for the Treatment of Relapsed or Refractory Multiple Myeloma in Patients With Extramedullary Disease

  • PhasePhase 2
  • StatusRecruiting
  • Planned enrollment28 people
  • Recruiting US sites1
  • SponsorRoswell Park Cancer Institute
  • RegistryNCT06627751

Recruitment re-checked on ClinicalTrials.gov Oct 30, 2026. Public record; not medical advice.

Mezigdomide, Carfilzomib, and Dexamethasone for the Treatment of Relapsed or Refractory Multiple Myeloma in Patients With Extramedullary Disease: a one-minute explainerNCT066277511 min

Eligibility

Who can join

The film gives the main points. The full list below is copied from the registry; the study team makes the final decision.

  • Age18 Years to no maximum
  • SexAll
  • Healthy volunteersNo

You may be able to join if

  • Age ≥ 18 years of age
  • Have an Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 2
  • RRMM patients with one or more prior lines of therapy with at least one ES or PS lesion that is accessible to a biopsy. Accessibility will be assessed by the MM tumor board
  • Measurable disease meeting at least one of the following:
  • Serum M-protein ≥1 g/dL
  • Urine M-protein ≥200 mg/24 h
  • Serum FLC assay: involved FLC level ≥10 mg/dL provided serum FLC ratio is abnormal
  • Up to 10 patients without measurable disease can be enrolled but screening imaging and/or bone marrow biopsy have to confirm RRMM. Follow-up response assessment will be performed with imaging using RECIST 1.1 and Deauville Criteria and bone marrow biopsies
  • Absolute neutrophil count: ≥ 1 x 10^9/L
  • Platelets: ≥ 75 x 10^9/L
  • Total bilirubin: ≤ 1.5 x upper limit of normal (ULN)
  • Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]): ≤ 3 x ULN
  • Renal function: Estimated creatinine clearance ≥ 30 mL/min (Cockroft-Gault)
  • Adequate cardiac pump function with a left ventricular ejection fraction of ≥ 40%
  • Women of child-bearing potential must agree to use adequate contraceptive methods (e.g., hormonal or barrier method of birth control; abstinence) prior to study entry and for at least 28 days after the last dose of mezigdomide or 6 months after the last dose of carfilzomib. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
  • Male patients (non-vasectomized) must agree to use contraception during the treatment period and for at least 28 days after the last dose of mezigdomide or 3 months after the last dose of carfilzomib and refrain from donating sperm during this period
  • Participant must understand the investigational nature of this study and sign an independent ethics committee/institutional review board approved written informed consent form prior to receiving any study related procedure

You cannot join if

  • Participant has a history of anaphylaxis or hypersensitivity to thalidomide, lenalidomide, pomalidomide (including ≥ grade 3 rash during prior thalidomide, lenalidomide, or pomalidomide therapy), carfilzomib or dexamethasone, any cereblon E3 ligase modulators (CELMoD) agents, or the excipients contained in the formulations, or participant has any contraindications per local prescribing information
  • Administration of strong CYP3A modulators or proton-pump inhibitors (e.g., omeprazole, esomeprazole, lansoprazole, pantoprazole, rabeprazole) within 2 weeks of starting study intervention
  • Participant is unable or unwilling to undergo protocol required thromboembolism prophylaxis
  • Patient has evidence of mucosal or internal bleeding and/or is platelet transfusion refractory
  • Any medical conditions that, in the investigator's opinion, would impose excessive risk to the patient or would adversely affect his/her participation in this study
  • Known active infection requiring parenteral or oral anti-infective treatment within the past 14 days
  • Participant has a history of prior malignancy other than MM, except if the participant has been free of disease for ≥ 3 years or the participant had 1 of the following noninvasive malignancies treated with curative intent without known recurrence:
  • Basal or squamous cell carcinoma of the skin
  • Carcinoma in situ of the cervix or breast
  • Stage 1 bladder cancer
  • Incidental histological findings of localized prostate cancer such as tumor stage 1a or 1b (T1a or T1b) using the tumor, nodes, and metastasis (TNM) classification of malignant tumors OR prostate cancer that has been treated with curative intent
  • Other ongoing anti-myeloma therapy. Patients may be receiving concomitant therapy with bisphosphonates and low dose corticosteroids for symptom management and comorbid conditions. Doses of corticosteroid should be stable for at least 7 days prior to patient registration
  • Pregnant or breast-feeding females
  • Serious psychiatric illness, active alcoholism, or drug addiction that may hinder or confuse follow-up evaluation
  • Known active HIV or hepatitis B or C viral infection
  • Known history of HIV infection
  • Systemic amyloidosis or POEMS syndrome (plasma cell dyscrasia with polyneuropathy, organomegaly, endocrinopathy, monoclonal protein [M-protein] and skin changes)
  • Prior peripheral stem cell transplant within 12 weeks of study enrollment
  • Radiotherapy within 14 days prior to cycle 1 day 1. However, if the radiation portal covered ≤ 5% of the bone marrow reserve, the patient may be enrolled irrespective of the end date of radiotherapy
  • Known intolerance to steroid therapy
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, severe cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • Carfilzomib-refractory in the most recent line of therapy
  • Prior treatment with mezigdomide
  • Contraindication against conscious sedation
  • Unwilling or unable to follow protocol requirements
  • Any condition which in the investigator's opinion deems the participant an unsuitable candidate to receive study drug

The treatment

How it is intended to work

This is how the treatment is meant to work. Whether it helps, and how safe it is, is what this trial is testing.

mezigdomide. A modulator of the E3 ubiquitin ligase complex containing cereblon (CRL4-CRBN E3 ubiquitin ligase), with potential immunomodulating and antineoplastic activities. Upon administration, mezigdomide specifically binds to cereblon (CRBN), thereby affecting the ubiquitin E3 ligase activity, and targeting certain substrate proteins for ubiquitination. This induces proteasome-mediated degradation of certain transcription factors, some of which are transcriptional repressors in T cells. This leads to modulation of the immune system, including activation of T lymphocytes, and downregulation of the activity of other proteins, some of which play key roles in the proliferation of certain cancer cell types. CRBN, the substrate recognition component of the CRL4-CRBN E3 ubiquitin ligase complex, plays a key role in the ubiquitination of certain proteins. NCI Drug Dictionary

carfilzomib. An epoxomicin derivate with potential antineoplastic activity. Carfilzomib irreversibly binds to and inhibits the chymotrypsin-like activity of the 20S catalytic core subunit of the proteasome, a protease complex responsible for degrading a large variety of cellular proteins. Inhibition of proteasome-mediated proteolysis results in an accumulation of polyubiquinated proteins, which may lead to cell cycle arrest, induction of apoptosis, and inhibition of tumor growth. NCI Drug Dictionary

Treatments listed in the registry

  • Mezigdomide (Biological): Given PO
  • Carfilzomib (Drug): Given IV
  • Dexamethasone (Drug): Given PO
  • Echocardiography (Procedure): Undergo ECHO
  • Positron Emission Tomography (Procedure): Undergo PET/CT
  • Computed Tomography (Procedure): Undergo PET/CT
  • Computed Tomography Assisted Biopsy (Procedure): Undergo CT guided tumor Biopsy
  • Bone Marrow Aspiration (Procedure): Undergo bone marrow aspiration biopsy
  • Bone Marrow Biopsy (Procedure): Undergo bone marrow biopsy
  • Biospecimen Collection (Procedure): Undergo blood and saliva sample collection

The study

Treatment groups

Na · Single Group · masking: None

Treatment - MeziKD (Experimental)

Patients receive mezigdomide PO QD on days 1-21 of each cycle, carfilzomib IV over 30 minutes on days 1, 8, and 15 of each cycle, and dexamethasone PO on days 1, 8, 15, and 22 of each cycle. Cycles repeat every 28 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. After 6 cycles of study treatment, patients showing a response to therapy may continue the treatment regimen as part of standard of care per physician's discretion. Additionally, patients undergo ECHO, PET/CT, MRI, CT guided tumor biopsy, bone marrow aspiration and biopsy, and blood and saliva sample collection throughout the study,

What it involves

Procedures

As the registry describes them. Requirements to join, such as a tissue sample, are in the eligibility list above even when on-study procedures are optional. Ask the study team which steps apply to you.

  • biopsy: Part of the study plan
  • bone marrow: Part of the study plan
  • blood samples: Part of the study plan
  • CT scans: Part of the study plan
  • MRI: Part of the study plan
  • PET scans: Part of the study plan
  • echocardiogram: Part of the study plan

Goals

What the study measures

Main goals

  • Overall Response Rate (At the end of cycle 6 (each cycle is 28 days).)
  • Clinical benefit rate (At the end of cycle 6 (each cycle is 28 days))

Other goals

  • Incidence of Adverse Events (AEs)
  • Duration of response
  • Progression Free survival
  • Overall Survival
  • Imaging Response

Planned enrollment: 28 (estimated).

Where

Recruiting US sites

  • Roswell Park Cancer Institute, Buffalo, New York

Site status as of Oct 30, 2026. Check the live record before contacting a site.

Sources

Where this comes from

Registry record reviewed as fetched Oct 30, 2026, last updated by the sponsor Aug 17, 2026. Public record; not medical advice.

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