Study Stopped
Lack of funding
Selvigaltin With Standard of Care Treatment for the Treatment of Relapsed/Refractory Multiple Myeloma
Phase I Trial of GB1211 (Selvigaltin), an Oral Galectin-3 (Gal-3) Inhibitor, Combined With Standard of Care Treatment in Relapsed/Refractory Multiple Myeloma (RRMM)
2 other identifiers
interventional
N/A
1 country
1
Brief Summary
This phase I trial studies the side effects and best dose of selvigaltin when given together with standard of care treatment (daratumumab-hyaluronidase, carfilzomib, dexamethasone) in treating patients with multiple myeloma that has come back after a period of improvement (relapsed) or that does not respond to treatment (refractory). Selvigaltin works by blocking the activity of a protein called galectin-3. Galectin-3 is involved in various cellular processes, including inflammation and tissue scarring, which is associated with worse outcomes in several forms of cancer. By blocking the activity of galectin-3, selvigaltin may help reduce inflammation and tissue scarring. Daratumumab-hyaluronidase is a drug composed of daratumumab and hyaluronidase. Daratumumab is in a class of medications called monoclonal antibodies. It binds to a protein called CD38, which is found on some types of immune cells and cancer cells, including myeloma cells. Daratumumab may block CD38 and help the immune system kill cancer cells. Hyaluronidase helps deliver the daratumumab to CD38-expressing cancer cells. Carfilzomib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Dexamethasone is in a class of medications called corticosteroids. It is used to reduce inflammation and lower the body's immune response to help lessen the side effects of chemotherapy drugs. Giving selvigaltin with standard of care treatment may be safe, tolerable, and/or effective in treating patients with relapsed or refractory multiple myeloma.
Trial Health
Trial Health Score
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Started Apr 2026
1 active site
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Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
July 16, 2025
CompletedFirst Posted
Study publicly available on registry
July 24, 2025
CompletedStudy Start
First participant enrolled
April 1, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 1, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 1, 2028
April 15, 2026
April 1, 2026
1.8 years
July 16, 2025
April 10, 2026
Conditions
Outcome Measures
Primary Outcomes (3)
Incidence of dose limiting toxicities (DLTs)
As assessed by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events version (v) 5.0. The DLTs will be summarized by dose level using frequencies and relative frequencies.
Up to 28 days
Maximum tolerated dose (MTD)
Will determine the MTD of selvigaltin when administered in combination with daratumumab, carfilzomib, and dexamethasone (DaraKD). Will employ the Bayesian optimal interval design to find the MTD.
Up to 28 days
Recommended phase 2 dose (RP2D)
Will determine the RP2D of selvigaltin when administered in combination with DaraKD. The RP2D will be determined by evaluating both the toxicity profile and the therapeutic response.
Up to 28 days
Secondary Outcomes (8)
Incidence of overall adverse events
Up to 6 cycles (Cycle length = 28 days)
Incidence of serious adverse events
Up to 6 cycles (Cycle length = 28 days)
Overall response rate
During or after 6 cycles of therapy, assessed up to 3 years (Cycle length = 28 days)
Duration of response
During or after 6 cycles of therapy, assessed up to 3 years (Cycle length = 28 days)
Progression free survival
From the start of treatment until the first occurrence of disease progression or death from any cause, whichever comes first, assessed up to 3 years
- +3 more secondary outcomes
Study Arms (1)
Treatment (selvigaltin, Dara-KD)
EXPERIMENTALSee Detailed Description.
Interventions
Undergo blood sample collection
Given IV
Undergo bone marrow biopsy
Undergo PET/CT and/or CT
Given SC
Given PO
Undergo ECHO
Undergo MRI
Undergo MUGA
Undergo PET/CT
Eligibility Criteria
You may qualify if:
- Age ≥ 18 years
- RRMM with measurable disease prior to initiation of study intervention. Measurable disease must include at least one of the following criteria:
- Serum M-protein \> 0.5 g/dL or,
- Urine M-protein \> 200 mg/24h or,
- Serum free light chain assay: involved free light chain (FLC) level \> 100 mg/L provided serum free light chain ratio is abnormal or,
- Bone marrow plasma cells \> 10% of total bone marrow cells
- Have received ≥ 1 prior line of therapy
- Planned treatment with the standard of care regimen of daratumumab, carfilzomib, and dexamethasone (Dara-KD) regimen
- Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
- Absolute neutrophil count: ≥ 1,000 /µL
- Platelets: ≥ 75,000 /µL
- Hemoglobin: ≥ 7 g/dL
- Total bilirubin: ≤ 1.5 x upper limit of normal (ULN): ≤ 3.0 x ULN for Gilbert's Syndrome
- Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase \[SGPT\]): ≤ 3 x ULN
- Estimated glomerular filtration rate (eGFR) ≥ 30 mL/min
- +3 more criteria
You may not qualify if:
- Known hypersensitivity to selvigaltin or any of the excipients
- Prior hypersensitivity or grade 3 skin toxicity with daratumumab/carfilzomib
- Concomitant medication(s) known to be (a) a strong inhibitor or inducer of CYP3A4, (b) strong P-gp/MDRI inhibitors or inducers or, (c) QT interval (QT) prolonging as defined in the drug's label, with the exception of drugs that are considered absolutely essential for the care of the subject or if the Investigator believes that beginning therapy with such medication is vital to an individual subject's care while on study, and in either case, there is no alternative medication
- Electrocardiogram (ECG) demonstrating a corrected QT interval (QTc) interval \> 470 msec without a bundle block or patients with congenital long QT syndrome
- Coronary artery bypass, angioplasty, vascular stent, myocardial infarction, angina or congestive heart failure in the last 6 months
- Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, class III or IV heart failure (New York Heart Association functional classification system), or psychiatric illness/social situations that would limit compliance with study requirements
- Known active bacillus tuberculosis infection
- Known active HIV unless CD4+ \> 350 cells/µL, no history of AIDS-defining opportunistic infection within the past 12 months, or on effect anti-retroviral therapy (ART) with \> 4 weeks on treatment and viral load \< 400 copies/mL. Confirm low risk of drug-drug interactions or are able to be substituted
- Pregnant or nursing female participants
- Any condition which in the investigator's opinion deems the participant an unsuitable candidate to receive study drug
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Roswell Park Cancer Institute
Buffalo, New York, 14263, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Hamza Hassan
Roswell Park Cancer Institute
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
July 16, 2025
First Posted
July 24, 2025
Study Start
April 1, 2026
Primary Completion (Estimated)
February 1, 2028
Study Completion (Estimated)
February 1, 2028
Last Updated
April 15, 2026
Record last verified: 2026-04