A Study to Learn if 27T51, a Mucin-16 (MUC16) Protein Targeting Immune Cell Therapy, Administered Alone or in Combination is Safe and How Well it Works for Adult Participants With Recurrent or Treatment Resistant Ovarian Cancers

NCT ID: NCT06469281

Last Updated: 2025-11-26

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

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-06

Study Completion Date

2030-05-27

Brief Summary

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This study is researching an experimental CAR T cell therapy called 27T51, referred to as study drug. The study drug is a MUC16 targeting immune cell therapy focused on adult female participants with recurrent or difficult to treat epithelial ovarian, primary peritoneal or fallopian tube cancer.

This study has two (2) major parts:

Phase 1a Dose Escalation and Phase 1b Dose Expansion. The aim of the dose escalation part will be to test the safety of 27T51 in a small number of participants to find the highest dose given to humans without unacceptable side effects. The aim of the dose expansion part will be to test 27T51 at the established dose level(s) from the dose escalation part and may include other medications given in combination with 27T51.

Information collected from this study will help researchers understand more fully whether this immune cell therapy, also known as CAR T cell therapy, can be safely used to treat solid tumors such as ovarian cancer.

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Detailed Description

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Former Sponsor 2seventy bio

Conditions

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Epithelial Ovarian Cancer Primary Peritoneal Carcinoma Fallopian Tube Cancer

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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Dose Escalation

27T51 monotherapy

Group Type EXPERIMENTAL

27T51

Intervention Type OTHER

Intravenous (IV) infusion

Dose Expansion - Arm A

27T51 monotherapy

Group Type EXPERIMENTAL

27T51

Intervention Type OTHER

Intravenous (IV) infusion

Dose Expansion - Arm B

27T51+Cemiplimab

Group Type EXPERIMENTAL

27T51

Intervention Type OTHER

Intravenous (IV) infusion

Cemiplimab

Intervention Type DRUG

IV infusion

Dose Expansion - Arm C

27T51+Cemiplimab+Bevacizumab

Group Type EXPERIMENTAL

27T51

Intervention Type OTHER

Intravenous (IV) infusion

Cemiplimab

Intervention Type DRUG

IV infusion

Bevacizumab

Intervention Type DRUG

IV Infusion

Interventions

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27T51

Intravenous (IV) infusion

Intervention Type OTHER

Cemiplimab

IV infusion

Intervention Type DRUG

Bevacizumab

IV Infusion

Intervention Type DRUG

Other Intervention Names

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Libtayo REGN2810 Avastin Mvasi Vegzelma Zirabe

Eligibility Criteria

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Inclusion Criteria

1. Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1
2. Histological diagnosis of epithelial ovarian, primary peritoneal, or fallopian tube cancer according to World of Health Organization (WHO) 2020 classification
3. Recurrent or refractory epithelial ovarian, primary peritoneal, or fallopian tube cancer, as described in the protocol
4. Serum cancer antigen (CA) 125 ≥ 2 × upper limit of normal (ULN) as assessed at the local lab by a 510(k) cleared test at screening
5. Participants must have at least 1 measurable tumor lesion as defined by the response evaluation criteria in solid tumors (RECIST) 1.1.
6. Expected survival ≥ 3 months

Exclusion Criteria

1. Inadequate cardiovascular, renal and hepatic function, as described in the protocol
2. Absolute lymphocyte count (ALC) \< 100 cells/μL at time of leukapheresis
3. History of Grade ≥ 2 hemorrhage within 30 days, or inadequate coagulation parameters, as described in the protocol
4. Known history or presence of clinically relevant central nervous system (CNS) pathology, as described in the protocol
5. Ongoing or recent (within 2 years) evidence of significant autoimmune disease that required treatment with systemic immunosuppressive treatments, which may suggest risk for immune related adverse events (AEs)
6. Treatment with any cellular or gene therapy
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Regeneron Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trial Management

Role: STUDY_DIRECTOR

Regeneron Pharmaceuticals

Locations

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Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status RECRUITING

John Theurer Cancer Center Hackensack University Medical Center

Hackensack, New Jersey, United States

Site Status RECRUITING

Roswell Park Cancer Institute

Buffalo, New York, United States

Site Status RECRUITING

UPMC Hillman Cancer Center

Pittsburgh, Pennsylvania, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Clinical Trials Administrator

Role: CONTACT

844-734-6643

Facility Contacts

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Oladapo Yeku, MD, FACP

Role: primary

617-643-9354

Oncology Clinical Research Referral Office

Role: primary

551-996-1777

Laura Ryan

Role: primary

716-845-3057 ext. 7298

Role: primary

878-261-6063

Other Identifiers

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27T51-01

Identifier Type: -

Identifier Source: org_study_id

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