CART-PSMA-TGFβRDN Cells for Castrate-Resistant Prostate Cancer

February 19, 2026 updated by: University of Pennsylvania

Phase I Study of CART-PSMA-TGFβRDN Cells in Patients With Advanced Castrate Resistant Prostate Cancer

This is a single center, single arm Phase I study to establish the safety and feasibility of intravenously administered lentivirally transduced dual PSMA-specific/TGFβ-resistant CAR modified autologous T cells (CART-PSMA-TGFβRDN cells) in patients with metastatic castrate resistant prostate cancer.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a Phase I study evaluating the safety and feasibility of lentivirally transduced PSMA-TGFβRDN autologous CAR T cells administered with and without cyclophosphamide/fludarabine lymphodepleting chemotherapy in a 3+3 dose escalation design. Subjects must receive the dose of CART-PSMA-TGFβRDN cells as per their cohort assignment in order to be considered evaluable for DLT assessments at that dose level. Subjects who do not receive CART-PSMA-TGFβRDN cells as per their cohort assignment will not be evaluable for DLT assessments/MTD determination, however they will still be followed per protocol and will be included in the overall safety analysis, as well as the analysis of secondary and exploratory endpoints. Subjects who enroll but do not receive CART-PSMA-TGFβRDN cells will be removed from the study and replaced.

Up to 5 dosing cohorts will be explored as follows:

  • Cohort 1 subjects (N=3 or 6): will receive a single dose of 1-3 x 107/m2 lentivirally transduced CART-PSMA-TGFβRDN cells on day 0 without any conditioning chemotherapeutic regimen. If 1 DLT/3 subjects occurs, the study will enroll an additional 3 subjects at this dose level. If 0 DLT/3 subjects or 1 DLT/6 subjects occurs, the study will advance to Cohort 2. If 2 DLT/3 subjects occurs at dose of 1-3 x 107/m2 cells, then enrollment in this Cohort will be stopped and the dose will be de-escalated by 10-fold to 1-3 x 106 cells/m2 (Cohort -1). In this situation, up to 6 subjects will be enrolled in Cohort -1.
  • Cohort 2 subjects (N=3 or 6): will receive a single dose of 1-3 x 108/m2 lentivirally transduced CART-PSMA-TGFβRDN cells on day 0 without any conditioning chemotherapeutic regimen. If 1 DLT/3 subjects occurs, the study will enroll an additional 3 subjects at this dose level. If 0 DLT/3 subjects or 1 DLT/6 subjects occurs, the study will advance toIf 2 DLT/3 subjects occur, then the study will stop and declare maximum tolerated dose (MTD).

Cohorts 1 and 2 were originally designed to identify the MTD of CART-PSMA-TGFβRDN cells. The highest dose level where only 0/3 or 1/6 DLTs were observed in a given cohort will be defined as the MTD for evaluation in Cohort 3.

COHORT 3 CLOSED WITH PROTOCOL V10

  • Cohort 3 subjects (N=3 to 9): will receive a single dose of lentivirally transduced CART-PSMA-TGFβRDN cells at the MTD (established by Cohorts 1-2) on day 0, following lymphodepleting chemotherapy with cyclophosphamide 300 mg/m2/day and fludarabine 30 mg/m2/day given over 3 days; lymphodepleting chemotherapy will be scheduled such that the last day of chemotherapy is 3 days (± 1 day) prior to the infusion of CART-PSMA-TGFβRDN cells. This treatment regimen will be evaluated as follows:

    • If 0 DLT /3 subjects occur, the study will enroll an additional 6 patients to confirm further evaluate the safety of this treatment regimen.
    • If 1 DLT/3 subjects occurs, the study will enroll an additional 3 subjects at this dose level to further evaluate safety. If 1 DLT/6 subjects and the safety of this treatment regimen is established, another 3 subjects may be enrolled to further evaluate the safety of this treatment regimen.
    • If 2 DLT/3 subjects or 2 DLT/6 subjects occurs, then enrollment into this cohort will be stopped and the CART-PSMA-TGFβRDN dose will be de-escalated to 1x107/m2 CART-PSMA-TGFβRDN cells with lymphodepleting chemotherapy (Cohort -3). At least 3 subjects would be treated in the Cohort -3 de-escalation cohort.
  • Cohort -3 subjects (N=3 to 6): will open in the event of unacceptable toxicity in Cohort 3. Subjects enrolled into this cohort will receive a single dose of 1-3 x 107/m2 lentivirally transduced CART-PSMA-TGFβRDN cells on day 0, following lymphodepleting chemotherapy with cyclophosphamide 300 mg/m2/day and fludarabine 30 mg/m2/day given over 3 days; lymphodepleting chemotherapy will be scheduled such that the last day of chemotherapy is 3 days (± 1 day) prior to the infusion of CART-PSMA-TGFβRDN cells. Up to 6 subjects will be treated in this dose de-escalated cohort to demonstrate the safety of this regimen.

Once the safety of the Cohort -3 dosing regimen has been established, a new dose escalation Cohort 4 will be opened to enrollment. The 1st three infusions in Cohort 4 will be staggered by 28 days to allow for the assessment of DLTs. If no safety concerns are identified in the first three subjects within this cohort, subsequent infusions within Cohort 4 will be staggered by at least 14 days.

• Cohort 4 subjects (N=3 to 6): Subjects enrolled into this cohort will receive a single dose of 0.70-1.00 x 108 lentivirally transduced CART-PSMA-TGFβRDN cells on Day 0, following lymphodepleting chemotherapy with cyclophosphamide 300 mg/m2/day and fludarabine 30 mg/m2/day given over 3 days. Lymphodepleting chemotherapy will be scheduled such that the last day of chemotherapy is 3 days (± 1 day) prior to the infusion of CART-PSMA-TGFβRDN cells.

  • If 1 DLT/3 subjects occurs, the study will enroll an additional 3 subjects at this dose level. If 1 DLT/6 subjects occurs, this dose level will be established as safe; and the safety of the CART-PSMA-TGFβRDN cells may continue to be further explored as part of a subsequent expansion amendment.
  • If 0 DLT/3 subjects occurs, the study will enroll an additional 3 subjects at this dose level to further evaluate safety. If 0 DLT/6 subjects or 1 DLT/6 subjects occurs, this dose level will be established as safe; and the safety of the CART-PSMA-TGFβRDN cells may continue to be further explored as part of a subsequent expansion amendment. .
  • If 2 DLTs occur at any time, enrollment in this cohort will be stopped and the study will be paused for additional investigation.

At the investigator's discretion, subjects may receive "retreatment" with CART-PSMA-TGFβRDN cells at any point after Day 28, provided that safety of the cohort-defined treatment regimen has been established.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
23

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • University of Pennsylvania

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Metastatic castrate resistant prostate cancer
  2. RETIRED WITH PROTOCOL VERSION 15
  3. Radiographic evidence of osseous metastatic disease and/or measurable, non-osseous metastatic disease (nodal or visceral)
  4. Patients ≥ 18 years of age
  5. ECOG performance status of 0 - 1

  6. Adequate organ function, as defined by:

    1. Serum creatinine ≤ 1.5 mg/dl or creatinine clearance ≥ 60 cc/min
    2. Serum total bilirubin < 1.5x ULN
    3. Serum ALT/AST < 2x ULN

  7. Adequate hematologic reserve within 4 weeks of eligibility confirmation by physician-investigator as defined by:

    1. Hgb > 10 g/dl
    2. PLT > 100 k/ul
    3. ANC > 1.5 k/ul Note: Subjects must not be transfusion dependent

  8. Evidence of progressive castrate resistant prostate adenocarcinoma, as defined by:

    1. Castrate levels of testosterone (< 50 ng/ml) with or without the use of androgen-deprivation therapy AND
    2. Evidence of one of the following measures of progressive disease in the 12 weeks preceding eligibility confirmation by physician:

    i. soft tissue progression by RECIST 1.1 criteria ii. osseous disease progression with 2 or more new lesions on bone scan (as per PCWG2 criteria) iii. increase in serum PSA of at least 25% and an absolute increase of 2 ng/ml or more from nadir (as per PCWG2 criteria)

  9. Prior therapy with at least one standard initial therapy for the treatment of metastatic castrate resistant prostate cancer (i.e. docetaxel chemotherapy, 17α lyase inhibitor, or second-generation anti-androgen therapy)
  10. Provides written informed consent
  11. Subjects of reproductive potential must agree to use acceptable birth control methods

Exclusion Criteria:

  1. RETIRED WITH PROTOCOL V16
  2. History of an active non-curative non-prostate primary malignancy within the prior 3 years
  3. RETIRED WITH PROTOCOL VERSION 6
  4. Subjects who require the chronic use of systemic corticosteroid therapy. Patients may be on a low dose of steroids (≤10mg equivalent of prednisone).
  5. RETIRED WITH PROTOCOL V13
  6. Subjects with Class III/IV cardiovascular disability according to the New York Heart Association Classification
  7. Subjects with symptomatic vertebral metastases affecting spinal cord function (as determined by clinical history, physical exam, or MRI imaging)
  8. Active autoimmune disease, including connective tissue disease, uveitis, inflammatory bowel disease, or multiple sclerosis; or a history of severe (as judged by the physician-investigator) autoimmune disease requiring prolonged immunosuppressive therapy
  9. Patients with ongoing or active infection.
  10. History of allergy or hypersensitivity to study product excipients (human serum albumin, DMSO, and Dextran 40)
  11. Active hepatitis B, hepatitis C or HIV infection.
  12. Active medical condition that, in the opinion of the physician-investigator, would substantially increase the risk of uncontrollable CRS or CAR Neurotoxicity.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Cohort 1
CART-PSMA-TGFβRDN cells 1-3x10^7 Day 0
Biological: CART-PSMA-TGFβRDN cells
autologous CAR T cells
Experimental: Cohort 2
CART-PSMA-TGFβRDN cells 1-3x10^8 Day 0
Biological: CART-PSMA-TGFβRDN cells
autologous CAR T cells
Experimental: Cohort -3
CART-PSMA-TGFβRDN cells 1-3x10^7 Day 0
Biological: CART-PSMA-TGFβRDN cells
autologous CAR T cells
Drug: Cyclophosphamide
300 mg/m2/day given over 3 days
Drug: Fludarabine
30 mg/m2/day given over 3 days
Experimental: Cohort 4
CART-PSMA-TGFβRDN cells 0.70-1.00 x 10^8 Day 0
Biological: CART-PSMA-TGFβRDN cells
autologous CAR T cells
Drug: Cyclophosphamide
300 mg/m2/day given over 3 days
Drug: Fludarabine
30 mg/m2/day given over 3 days
Experimental: Cohort 3
CART-PSMA-TGFβRDN cells at the MTD (established by Cohorts 1-2) on day 0
Biological: CART-PSMA-TGFβRDN cells
autologous CAR T cells
Drug: Cyclophosphamide
300 mg/m2/day given over 3 days
Drug: Fludarabine
30 mg/m2/day given over 3 days

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Occurrence of study related adverse events, laboratory toxicities and clinical events that are possibly, likely, or definitely related to study participation.
Time Frame: 15 years
using CTCAE v 4.03
15 years
Clinical feasibility is defined as the frequency of subjects enrolled on this protocol who do not receive CART-PSMA-TGFβRDN cells.
Time Frame: 30 days
30 days
Manufacturing feasibility is determined by the frequency of product release failures and the occurrence of dose failures (inability to meet target dose).
Time Frame: 30 days
30 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Assess the clinical anti-tumor effect of CART-PSMA-TGFβRDN cells by RECIST
Time Frame: 6 months
RECIST 1.1 criteria for soft tissue disease
6 months
Assess the clinical anti-tumor effect of CART-PSMA-TGFβRDN cells by PCWG2
Time Frame: 6 months
PCWG2 criteria for osseous disease
6 months
Assess the clinical anti-tumor effect of CART-PSMA-TGFβRDN cells by serum PSA measurement
Time Frame: 6 months
serum PSA measurement
6 months
Assess the clinical anti-tumor effect of CART-PSMA-TGFβRDN cells by overal survival (OS).
Time Frame: 15 Years
15 Years
Assess the clinical anti-tumor effect of CART-PSMA-TGFβRDN cells by number of subjects with progression free survival (PFS).
Time Frame: 15 Years
15 Years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Pennsylvania

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Naomi Haas, MD, Universtiy of Pennsylvania

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 8, 2017

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 8, 2038

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 8, 2038

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 20, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 20, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 24, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 23, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 19, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • UPCC 32816, 826250

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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