A Study of CART-PSMA-TGFβRDN in Patients With Metastatic Castration Resistant Prostate Cancer

NCT04227275 | Terminated Phase 1 DMC FDA Drug

• 1 other identifier: CART-PSMA-TGFβRDN-02
• Study Type: interventional
• Target: 16
• Locations: 1 country
• Sites: 9

Brief Summary

Multi-center, open-label, Phase 1 study of the safety, tolerability and feasibility of dosing patients harboring metastatic castration resistant prostate cancer (mCRPC) with genetically modified autologous T cells (CART-PSMA-TGFβRDN cells) engineered to express a chimeric antigen receptor (CAR) capable of recognizing the tumor antigen prostate-specific membrane antigen (PSMA) and activating the T cell.

Conditions

Metastatic Castration-resistant Prostate Cancer

Keywords

Chimeric Antigen Receptor (CAR); T-cells; Prostate-Specific Membrane Antigen (PSMA); Prostate Cancer

Outcome Measures

Primary Outcomes (2)

• Dose Escalation: Dose Identification of CART-PSMA-TGFβRDN

  Incidence of Dose Limiting Toxicity (DLT)

  Up to 2 years

• Cohort Expansion: Safety of CART-PSMA-TGFβRDN

  Percentage of patients experiencing adverse events (AEs), including serious and severe AEs overall, by dose level, and severity grade

  Up to 2 years

Secondary Outcomes (3)

• Preliminary efficacy of CART-PSMA-TGFβRDN as assessed by biochemical Objective Response Rate (ORR)

  Up to 2 years

• Feasibility of CART-PSMA-TGFβRDN

  Up to 2 years

• Peripheral expansion and persistence of CART-PSMA-TGFβRDN

  Up to 15 years

Study Arms (1)

Dose Escalation

EXPERIMENTAL

Dose escalation of intravenous CART-PSMA-TGFβRDN cells for patients with metastatic castration resistant prostate cancer

Biological: CART-PSMA-TGFβRDN; Drug: Cyclophosphamide; Drug: Fludarabine; Drug: Anakinra

Interventions

CART-PSMA-TGFβRDN BIOLOGICAL

Intravenous administration of genetically modified autologous T cells engineered to express a protein capable of recognizing the tumor antigen prostate-specific membrane antigen (PSMA), as well as a dominant negative TGFβ receptor

Dose Escalation

Cyclophosphamide DRUG

Patients will receive cyclophosphamide and fludarabine lymphodepletion chemotherapy followed by the investigational product, CART-PSMA-TGFβRDN genetically modified T cells

Dose Escalation

Fludarabine DRUG

Patients will receive cyclophosphamide and fludarabine lymphodepletion chemotherapy followed by the investigational product, CART-PSMA-TGFβRDN genetically modified T cells

Dose Escalation

Anakinra DRUG

In applicable cohorts, patients will receive anakinra prophylactically starting on the day of administration of investigational product, CART-PSMA-TGFβRDN genetically modified T cells

Dose Escalation

Eligibility Criteria

• Age: 18 Years+
• Sex: male
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Confirmed histologic diagnosis of prostate cancer and have mCRPC, with castrate levels of testosterone (\<50 ng/mL)
• PSA measurable disease per Prostate Working Group 3 (PCWG3) criteria
• Prior therapies defined as at least 2 prior lines of systemic therapy for prostate cancer, including at least one second generation androgen receptor inhibitor and/or CYP17α inhibitor. At least one line of prior therapy must be in the mCRPC setting
• Estimated estimated glomerular filtration rate ≥ 60 mL/min by Modification of Diet in Renal Disease criteria
• Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5x the upper limit of normal (ULN); patients with hepatic metastases ALT and AST ≤ 3.0 x ULN
• Serum total bilirubin \< 1.5 mg/dL unless patient has known Gilbert's Syndrome, then serum bilirubin ≤3 mg/dL
• Serum albumin ≥ 3.0 g/dL
• Left ventricular ejection fraction (LVEF) ≥ 50%. LVEF assessment must have been performed within 8 weeks of enrollment
• Hemoglobin ≥ 8 g/dL
• Absolute neutrophil count ≥ 1000/μL
• Platelet count ≥ 75,000/μL
• Patients who have not undergone bilateral orchiectomy must be able to continue gonadotropin-releasing hormone (GnRH) therapy during the study
• Eastern Cooperative Oncology Group (ECOG) score of 0 or 1
• Toxicities from any previous therapy must have recovered to Grade 1 or baseline
• Patients of reproductive potential agree to use of approved highly effective contraceptive methods

You may not qualify if:

• Active invasive cancer, other than the proposed cancer included in the study, within 2 years prior to screening, unless treated with curative intent
• Current treatment with systemic corticosteroids (defined as a dose greater than the equivalent of prednisone 10 mg/day)
• Active autoimmune disease (including connective tissue disease, uveitis, sarcoidosis, inflammatory bowel disease or multiple sclerosis) or a history of severe autoimmune disease requiring prolonged immunosuppressive therapy (any immunosuppressive therapy within 6 weeks prior to screening visit)
• Current human immunodeficiency virus (HIV), hepatitis C virus, hepatitis B virus infections; Patients who are hepatitis B core antigen positive, hepatitis B surface antigen negative, should have a quantitative viral load measured; If viral load is undetectable, the patient will not be excluded if hey are able to be treated with anti-viral medication for at least 7 days prior to lymphodepletion until at least 6 months after infusion with viral load and ALT monitoring
• Active or uncontrolled medical or psychological condition that would preclude participation
• History of seizure disorder
• Prior allogeneic stem cell transplant
• Central nervous system malignancy
• History of severe infusion reaction to monoclonal antibodies or biological therapies, or to study product excipients that would preclude the patient safely receiving CART-PSMA-TGFβRDN cells
• History of being previously treated with a J591 antibody-based therapy
• Ferritin levels ≥ 4x the upper limit of normal prior to apheresis or prior to the start of lymphodepleting chemotherapy
• Active or recent (within the past 6 months prior to apheresis or lymphodepletion) cardiovascular disease, defined as (1) New York Heart Association Class III or IV heart failure, (2) unstable angina, (3) a history of recent (within 6 months) myocardial infarction or sustained (\> 30 second) ventricular tachyarrhythmias, or (4) cerebrovascular accident
• Any active infection currently being treated or any infection within the last 6 weeks that required 7 days or more of IV antibiotics or any active infection within the last 4 weeks that requires use of oral antibiotics. Patients may be eligible once these timeframes elapse and with evidence that the infection has completely resolved
• Have inadequate venous access for or contraindications for the apheresis procedure
• Must agree not to participate in a conception process or must agree to a highly effective method of contraception

Sponsors & Collaborators

• Tceleron Therapeutics, Inc.: lead

Study Sites (9)

Moffitt Cancer Center

Tampa, Florida, 33612, United States

Location

The University of Kansas Hospital

Kansas City, Kansas, 66160, United States

Location

Washington University School of Medicine

St Louis, Missouri, 63110, United States

Location

Columbia University Medical Center

New York, New York, 10032, United States

Location

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

Location

Thomas Jefferson University

Philadelphia, Pennsylvania, 19107, United States

Location

University of Pittsburgh Medical Center

Pittsburgh, Pennsylvania, 15232, United States

Location

Sarah Cannon Research Insitute

Nashville, Tennessee, 37203, United States

Location

University of Washington Medical Center

Seattle, Washington, 98195, United States

Location

MeSH Terms

Conditions

Prostatic Neoplasms

Interventions

Cyclophosphamide; fludarabine; Interleukin 1 Receptor Antagonist Protein

Condition Hierarchy (Ancestors)

Genital Neoplasms, Male; Urogenital Neoplasms; Neoplasms by Site; Neoplasms; Genital Diseases, Male; Genital Diseases; Urogenital Diseases; Prostatic Diseases; Male Urogenital Diseases

Intervention Hierarchy (Ancestors)

Phosphoramide Mustards; Nitrogen Mustard Compounds; Mustard Compounds; Hydrocarbons, Halogenated; Hydrocarbons; Organic Chemicals; Phosphoramides; Organophosphorus Compounds; Cytokines; Intercellular Signaling Peptides and Proteins; Peptides; Amino Acids, Peptides, and Proteins; Proteins; Biological Factors

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Model Details: Sequential dose escalation

Study Record Dates

• First Submitted: December 12, 2019
• First Posted: January 13, 2020
• Study Start: November 22, 2019
• Primary Completion: November 7, 2022
• Study Completion: November 7, 2022
• Last Updated: August 21, 2023

Record last verified: 2023-08

Data Sharing

• IPD Sharing: Will not share

Locations

US (9)