NCT05489991

A Study of TmPSMA-02 Chimeric Antigen Receptor (CAR) T-cells in Patients With Metastatic Castration Resistant Prostate Cancer (mCRPC)

A Phase 1/2, Open-label, Multi-Center Study of Dually Armored Chimeric Antigen Receptor (CAR) T-cells (TmPSMA-02) in Patients With Metastatic Castration Resistant Prostate Cancer (mCRPC)

• Status: Terminated
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 1 (actual)
• Sponsor: Tceleron Therapeutics, Inc. · Industry
• Sex: Male
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

An open-label, multi-center, Phase 1/2 study to determine the safety, tolerability, and feasibility of dosing adult patients with mCRPC with genetically modified autologous T-cells (TmPSMA-02) engineered to express a CAR capable of recognizing the tumor antigen prostate-specific membrane antigen (PSMA) and activating the T-cell.

Detailed description

This is a Phase 1/2 single-arm study designed to identify the dose and regimen of TmPSMA-02 that can be safely administered intravenously following the lymphodepletion (LD) regimen to patients with mCRPC. The Phase 1 dose escalation portion of the study will employ a Bayesian Optimal Interval (BOIN) Design to define the Maximum Tolerated Dose (MTD) and determine the Recommended Phase 2 Dose (RP2D). Dose-limiting toxicities (DLTs) will be assessed from the start of LD regimen through 28-days post infusion of TmPSMA-02. The Phase 2 portion will employ a Simon's 2-stage design and include a single-arm of adult patients with mCRPC treated with the TmPSMA-02 at the RP2D. It is anticipated that up to 30 patients will enroll in the Phase 1 portion of the study and up to 84 patients will enroll in the Phase 2 portion of the study.

Conditions

• Metastatic Castration-resistant Prostate Cancer

Interventions

Type	Name	Description
BIOLOGICAL	TmPSMA-02	Intravenous administration of genetically modified autologous T-cells engineered to express a protein capable of recognizing the tumor antigen prostate-specific membrane antigen (PSMA) with a lentiviral vector to express anti-PSMA scFv, CD2 co-stimulatory domain and dually armored with a dominant negative TGFβ receptor and PD1.CD28 switch, will be infused intravenously on Day 0 as a single flat dose following standard lymphodepleting (LD) regimen.

Timeline

• Start date: 2022-09-06
• Primary completion: 2023-05-03
• Completion: 2023-05-03
• First posted: 2022-08-05
• Last updated: 2023-08-18

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study