An Open-label Extension Study of PSMA ADC 2301 in mCRPC

Progenics Pharmaceuticals

Status and phase: Completed; Phase 2

Conditions: Prostate Cancer

Treatments: Drug: PSMA ADC

Study type: Interventional

Funder types: Industry

Identifiers

NCT02020135

PSMA ADC 2301EXT

Details and patient eligibility

About

PSMA ADC 2301EXT is an open-label study to further assess the anti-tumor activity as measured by radiographic imaging and biomarkers, safety and tolerability of Prostate Specific Membrane Antigen Antibody Drug Conjugate (PSMA ADC) in subjects with mCRPC. Subjects who have participated in the PSMA ADC 2301 study and who, in the opinion of the Principal Investigator are likely to benefit from continued treatment with PSMA ADC are eligible for the PSMA ADC 2301 extension study. Subjects who are benefiting from treatment may be able to receive up to an additional eight to sixteen doses (every 3 weeks) of PSMA ADC.

Enrollment: 9 patients

Sex: Male

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Subjects who have completed the PSMA ADC 2301 study and who, in the opinion of the investigator, are likely to benefit from continued treatment with PSMA ADC
2. Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
3. If chemically castrated, subjects must agree to stay on androgen-deprivation therapy for the duration of the study
4. If applicable, men must agree to commit to the use of a medically acceptable method of birth control (e.g., spermicide in conjunction with a barrier such as a condom) or sexual abstinence for the duration of the study, including 30 days after the last dose of study drug

Exclusion criteria

1. An acute infection requiring ongoing antibiotic therapy (e.g., UTI, indwelling catheter or other potential site(s) of infection)
2. History of significant hypersensitivity reactions to PSMA ADC or any of its components, or to any prior investigational or approved monoclonal antibodies (mAbs), immunoglobulin (Ig) fusion proteins (e.g., circulating neutralizing antibodies), or ADC
3. Clinically significant cardiac disease or severe debilitating pulmonary disease
4. Any recent or ongoing medical condition that may interfere with a subject's participation or compliance with the study or evaluation of PSMA ADC

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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9 participants in 1 patient group

Arm 1: PSMA ADC

Experimental group

Description:

Subjects started the extension study at the same dose received upon completion of the core PSMA ADC 2301 study. Each Prostate Specific Membrane Antigen Antibody Drug Conjugate (PSMA ADC) dose was administered as an IV infusion over approximately 60 minutes once every three weeks (Q3W) for up to eight doses, unless a dose delay or dose reduction was required.

Treatment:

Drug: PSMA ADC