P-BCMA-101 is an autologous, principally Tscm, CAR-T cell product (also called called a CARTyrin T cell product) targeting the myeloma selective protein BCMA. P-BCMA-101 cells are produced using a non-viral vector carrying the gene for an anti-BCMA Centyrin-based (small, fully human binding domain, designed to increase T cell persistence and decrease exhaustion) chimeric antigen receptor (CAR). Secondary to the large carrying capacity of the non-viral vector, P-BCMA-101 cells carry two additional genes, a selection gene used to manufacture a purified product and a "safety switch" gene to allow the cells to be eliminated if desired.

SparkCures ID 293
Developed By Poseida Therapeutics, Inc.
Generic Name P-BCMA-101
Treatment Classifications
Treatment Targets

Clinical Trials

All Clinical Trials

View all active clinical trials around the US.

Late Relapse Multiple Myeloma

The following is a listing of clinical trials for patients with multiple myeloma who have received three or more prior lines of therapy.

Smoldering Myeloma
Monoclonal Gammopathy of Undetermined Significance (MGUS)

Published Results

FDA Grants Orphan Drug Designation to P-BCMA-101 CAR Therapy for R/R Multiple Myeloma

May 13, 2019

According to results presented at the 2018 ASH Annual Meeting, 23 patients received treatment with P-BCMA-101 in 1 of 5 dose cohorts and no dose-limiting toxicities were observed at any dose.

All 3 patients who received P-BCMA at a mean dose of 857 x 106 achieved a response, with 2 achieving a very good partial response. The third patient achieved a partial response and minimal residual disease negativity. Seven patients received a mean dose of 456 x 106 and the objective response rate was 43% in these patients. In the 7 patients who received a mean dose of 152 x 106, the objective response rate was 71%. A minor response or better was seen in 13 of 19 evaluable patients by IMWG criteria.