A Phase 1/2 Feasibility, Safety, and Activity Study of PSCA-Specific Chimeric Antigen Receptor Engineered T Cells (BPX-601) in Subjects With Previously Treated Advanced Solid Tumors
The purpose of this study is to evaluate the safety and activity of BPX-601 CAR-T cells in participants with previously treated advanced solid tumors (pancreatic and prostate) expressing high levels of prostate stem cell antigen (PSCA). Participants' T cells are modified to recognize and target the PSCA tumor marker on cancer cells.
Phase 1: Cell dose escalation to identify the maximum dose of BPX-601 administered with single or repeat doses of rimiducid (fixed dose of 0.4 mg/kg per infusion).
Phase 2: Indication-specific dose expansion to assess the safety, pharmacodynamics (including BPX-601 persistence), and clinical activity at the recommended dose identified in Phase 1 in various PSCA-expressing solid tumors.
18 Years and up
Accepting Healthy Volunteers?
- Metastatic pancreatic cancer with tumor progression within 6 months of the most recent anti-cancer treatment and documented positive tumor expression of PSCA, and prior treatment with first or second-line therapy; or,
- Metastatic castration-resistant prostate cancer (mCRPC), with progressive disease per PCWG3 criteria during or following the direct prior line of therapy.
- Measurable disease per RECIST v1.1 at baseline; subjects with mCRPC with bone only metastases must have measurable PSA.
- Age ≥18 years.
- Life expectancy > 12 weeks.
- ECOG 0-1
- Adequate organ function.
- Pancreatic cancer with islet cell neoplasms or symptomatic/untreated coagulopathy.
- Prostate cancer with unstable bone lesions or symptomatic/untreated coagulopathy, or history of > Grade 2 hematuria within the previous 6 months.
- Prior CAR T cell or other genetically-modified T cell therapy. Prior treatment with an immune-based therapy for the treatment of prostate cancer, including cancer vaccine therapies are allowable.
- Symptomatic, untreated, or actively progressing central nervous system metastases.
- Impaired cardiac function or clinically significant cardiac disease.
- Pregnant or breastfeeding.
- Participant requires chronic, systemic steroid therapy.
- Severe intercurrent infection.
- Known HIV positivity.