Safety and Tolerability Study of GIM-531 in Advanced Solid Tumors

NCT ID: NCT06425926

Last Updated: 2025-08-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

117 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-05-09

Study Completion Date

2026-11-30

Brief Summary

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GIM-531 is a first-in-class, orally bioavailable small molecule that is being developed for the treatment of advanced solid tumors as a single agent and rescue therapy. GIM-531 exhibits its primary effect through selective inhibition of regulatory T-cells (Tregs).

Detailed Description

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GIM531-CT01 is a Phase 1/2 open label, first-in-human, multicenter study. The Phase 1 portion will include a dose escalation with GIM-531 administered as a single agent. Additionally, there will be a dose expansion portion at the safety-cleared dose levels with participants allocated 1:1 within the proposed therapeutic range to accrue additional data for determining the safety profile, pharmacokinetics (PK) profile, pharmacodynamic (PD) effects and early anti-tumor activity of GIM-531. In Phase 2, GIM-531will be administered to participants with advanced/metastatic cutaneous melanoma who have progressed following treatment with an anti-PD-1 therapy.

Conditions

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Melanoma Stage IV Solid Tumor

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Phase 1 Single Agent

GIM-531 administered orally daily

Group Type EXPERIMENTAL

GIM-531

Intervention Type DRUG

GIM-531 administered orally daily

Phase 2 Combination Treatment

GIM-531 administered orally daily in combination with anti-PD-1 therapy

Group Type EXPERIMENTAL

GIM-531

Intervention Type DRUG

GIM-531 administered orally daily

Anti-PD-1 monoclonal antibody

Intervention Type DRUG

Continued treatment with anti-PD-1 therapy

Interventions

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GIM-531

GIM-531 administered orally daily

Intervention Type DRUG

Anti-PD-1 monoclonal antibody

Continued treatment with anti-PD-1 therapy

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Written informed consent
* Cytologically or histologically confirmed locally advanced or metastatic solid tumor that has progressed on standard therapy or for which no standard therapy exist; or be intolerant of standard therapy
* Have not received an experimental drug within 4 weeks or 5 half-lives (whichever is shorter) of study drug treatment or already be enrolled in a clinical study
* ECOG performance status 0-1
* Laboratory and ECG assessments within 28 days of enrollment including acceptable cardiac, renal, and hepatic functions
* Agree to baseline core needle biopsy or archival (within 12 months of screening) tumor submission; Note: Participants whose only site(s) of disease are in areas considered moderate or high risk for biopsy complications may be enrolled without a fresh biopsy upon Sponsor approval.
* Non pregnant participants; female participants of child bearing potential with non-sterile partners agree to use an effective form of contraception from the time of first dose of study drug (or 14 days prior to first dose for oral contraception) until 7 months after the last dose of study drug. Effective forms of contraception include hormonal (injection or oral), double barrier method, or intrauterine device. Non-sterile male participants with sexual partners of childbearing potential agree to use a barrier contraception method and agree to not donate sperm from the time of first dose of study drug until 4 months after the last dose of study drug.
* Measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) version (v)1.1


* NSCLC: Participants must have locally advanced/unresectable or metastatic NSCLC. Participants must have received no more than 3 prior lines of therapy in the advanced/metastatic setting.
* TNBC: Participants must have locally advanced unresectable, recurrent, or metastatic TNBC. Participants must have received no more than 3 prior lines of therapy in the advanced/metastatic setting.
* Ovarian Cancer: Participants must have locally advanced unresectable, recurrent, or metastatic ovarian cancer. Participants must have platinum-resistant ovarian cancer defined as disease recurrence or within 6 months after the last administration of platinum-based chemotherapy. Participants must have received no more than 1 line of therapy after development of platinum resistance. Maintenance treatment with Poly(ADP-ribose) polymerase inhibitors (PARPi) or bevacizumab are not counted as separate lines of therapy.
* Tumors with AKT3 mutation/amplification: Participants must have a locally advanced unresectable, recurrent, or metastatic solid malignancy. Participants with known AKT3 mutation/amplification based on next generation sequencing (NGS) performed per local standard of care.


* Have confirmed unresectable Stage III or metastatic Stage IV cutaneous melanoma, NSCLC, or RCC that has radiographically progressed (as confirmed by imaging assessed by the Investigator) on an approved single-agent or combination anti-PD-1 therapy
* Must have received the anti-PD-1 therapy containing regimen as the latest line of treatment and be eligible to restart or to continue anti-PD-1 therapy in combination with GIM-531
* BRAF wild-type melanoma or RCC: Participants must have received no more than 2 prior lines of therapy in the advanced/metastatic setting
* BRAF (V600) mutant melanoma or NSCLC: Participants must have received no more than 3 prior lines of therapy in the advanced/metastatic setting.

Exclusion Criteria

* Ongoing \>Grade 1 toxicity from prior therapy according to Common Terminology Criteria for Adverse Events v5.0 (Note: Grade 2 alopecia and Grade 2 sensory neuropathy are not exclusionary)
* Has known leptomeningeal disease, spinal cord compression, or brain metastases, except participants with the following:

* Brain metastases that have been treated and are clinically stable for at least 4 weeks prior to the first administration of study drug; Note: Participants receiving steroids for brain metastases must be either off steroids or on a stable, or decreasing dose, of \<10 mg daily of prednisone (or equivalent) in order to be eligible for enrollment; and
* No ongoing neurological symptoms related to the anatomic location of the brain metastases.

Note: Neurological symptoms that are considered sequelae to treatment for brain metastases are allowed.

* Has known structural cardiac disease
* Has known serious arrythmia, serious dysrhythmia, history of long QT syndrome, or clinically relevant cardiac conduction abnormalities
* Has an active autoimmune disease that has required systemic treatment in the past 12 months (ie, with use of disease modifying agents, corticosteroids, or immunosuppressive drugs). Replacement therapy (eg, thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment and is allowed.
* At time of screening, is receiving systemic steroid therapy (greater than or equal to 10 mg/day of prednisone or equivalent) or is taking any immunosuppressive therapy; Note: Use of topical, inhaled, nasal, or ophthalmic steroids is allowed.
* Has active and clinically significant bacterial, fungal, or viral infection, including known hepatitis B virus (HBV), hepatitis C virus (HCV), or human immunodeficiency virus (HIV)
* Has a history of, or currently has, an acquired or primary (congenital) immunodeficiency;
* Has had prior anti-cancer treatment with chemotherapeutic agents or immune modulating agents within \<4 weeks or 5 half-lives, whichever is shorter, prior to the first dose of study drug.
* Has received a live vaccine within 30 days of first dose of study drug;
* Has had or has planned major surgery within 2 weeks of the first dose of study drug;
* Inability to swallow an oral dose of a medication (eg, oral capsules)
* Is taking medications that are considered strong inducers or inhibitors of CYP2C8 or CYP3A4/5, P-glycoprotein (P-gp), breast cancer resistant protein (BCRP), or sensitive substrates of P-gp and BCRP (Appendix C) that cannot be discontinued at least 1 week prior to first dose of study drug and for the duration of the study.
* Is taking drugs that modify gastric pH, such as proton-pump inhibitors (PPIs) or H2 blockers. Antacids such as calcium carbonate or aluminum hydroxide-based products are permitted.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Georgiamune Inc

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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HonorHealth Research Institute

Scottsdale, Arizona, United States

Site Status RECRUITING

Comprehensive Blood and Cancer Center

Bakersfield, California, United States

Site Status RECRUITING

Providence Medical Foundation

Fullerton, California, United States

Site Status RECRUITING

The Angeles Clinic and Research Institute, A Cedars-Sinai Affiliate

Los Angeles, California, United States

Site Status RECRUITING

UCSF Helen Diller Family Comprehensive Cancer Center

San Francisco, California, United States

Site Status RECRUITING

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status RECRUITING

Intermountain Health St. Vincent Regional Hospital - Cancer Centers of Montana

Billings, Montana, United States

Site Status RECRUITING

Weill Cornell Medicine - New York Presbyterian Hospital

New York, New York, United States

Site Status RECRUITING

University of Cincinnati Cancer Center

Cincinnati, Ohio, United States

Site Status RECRUITING

Tennessee Oncology, PLLC

Nashville, Tennessee, United States

Site Status RECRUITING

Virginia Commonwealth University

Richmond, Virginia, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Jayadev Sureddi, CBCC CRO

Role: CONTACT

(661) 616-6453

Facility Contacts

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Andrew Islas

Role: primary

480-583-7474

Nicole Ward

Role: primary

661-862-8548

Kendall Karp

Role: primary

714-446-5177

Navid Hafez, MD

Role: primary

Saba Mukarram

Role: backup

310-231-2181

Sonia Contreras Martinez

Role: primary

415-514-6427

Ryan Sullivan, MD

Role: primary

617-724-4000

Matt Adler

Role: primary

406-238-6894

Faith McFadden

Role: primary

Role: backup

804-628-7978

Other Identifiers

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GIM531-CT01

Identifier Type: -

Identifier Source: org_study_id

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