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GB-5267

Phase 1

Platinum-resistant Ovarian Cancer | Monoclonal antibody | Oncology |Generate Biomedicines, Inc.|Trials Updated: Mar 27, 2026

GB-5267 target and mechanism

Molecular targetMUC16
ModalityMonoclonal antibody

Also known as GB-5267 - IV only, GB-5267- only

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

GB-5267 clinical trials

GB-5267 · 1 trial · 1 indication

Phase 1 1
NCT07489287GB-5267 for the Treatment Platinum-Resistant Ovarian, Peritoneal, or Fallopian Tube CancerPlatinum-resistant Ovarian Cancer
NOT YET_RECRUITING18 Analytics
PHASE1NOT YET_RECRUITING
GB-5267 for the Treatment Platinum-Resistant Ovarian, Peritoneal, or Fallopian Tube Cancer
Platinum-resistant Ovarian CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum Tolerated Dose (MTD) - Cohort A
28 days from GB-5267 cell infusion

Determine the MTD by assessing the incidence of dose limiting toxicities (DLTs) of GB-5267

Number of DLTs in combined IV and IP infusions of GB-5267 - Cohort B
Day 0 through day 7 after GB-5267 infusion

Evaluated using the Clopper-Pearson method

Secondary Endpoints

Time to Response - Cohort A
From start of treatment to first observation of overall response -Up to 2 years
Time to Response - Cohort B
Up to 2 years
Duration of Response - Cohort A
From time of overall response to disease progression or death -Up to 2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
IV OnlyEXPERIMENTALPatients receive IV only infusion of GB-5267 cells
Dose Expansion with Combined IV and IP InfusionEXPERIMENTALA combined administration of both IV and IP infusions.

Interventions

NameTypeDescription
GB-5267 - IV onlyBIOLOGICALIV infusion
GB-5267 -Combined IV and IP InfusionBIOLOGICALIV and IP Infusion
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * At least 18 years of age * Patients must have epithelial ovarian, peritoneal, or fallopian tube cancer that is confirmed by histology or cytology, with a histopathological diagnosis of serous, clear cell, endometrioid, mucinous carcinoma, or carcinosarcoma. * Must have platinu...

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Frequently asked questions about GB-5267

What is GB-5267 used for?

GB-5267 is being developed for the treatment of platinum-resistant ovarian cancer, a form of ovarian cancer that has progressed after platinum-based chemotherapy. It is also being studied in platinum-resistant peritoneal and fallopian tube cancers, which are closely related gynecologic malignancies often grouped with ovarian cancer in clinical trials.

What does GB-5267 target?

GB-5267 targets MUC16, a protein also known as CA125 that is commonly overexpressed on the surface of ovarian cancer cells. By binding to MUC16, this monoclonal antibody is designed to direct an immune response against MUC16-expressing tumor cells in platinum-resistant ovarian, peritoneal, and fallopian tube cancers.

Who is developing GB-5267?

GB-5267 is being developed by Generate Biomedicines, Inc., a biotechnology company focused on generative protein design. The company trades under the ticker symbol GENB. Generate Biomedicines is the sole developer listed for this monoclonal antibody candidate.

What phase is GB-5267 in?

GB-5267 is in Phase 1 clinical development. It is an investigational monoclonal antibody and has not been approved by the FDA for any indication. The Phase 1 trial is designed to evaluate the drug in patients with platinum-resistant ovarian, peritoneal, or fallopian tube cancer.

What clinical trials is GB-5267 in?

GB-5267 is being evaluated in one active Phase 1 clinical trial, NCT07489287, titled "GB-5267 for the Treatment Platinum-Resistant Ovarian, Peritoneal, or Fallopian Tube Cancer." The trial has a planned enrollment of 18 participants, is controlled, and is not yet recruiting. It is open to adults 18 years and older of all sexes.