Poseida Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on developing therapeutics for patients with high unmet medical needs. The company's development candidates for Heme Malignancies includes P-BCMA-ALLO1, which is in Phase I trial to treat patients with relapsed/refractory multiple myeloma; P-CD19CD20-ALLO1, which is in Phase I trial for treating B cell malignancies and other autoimmune diseases; P-BCMACD19-ALLO1, an allogeneic, off-the-shelf CAR-T product candidate in preclinical development for treating multiple myeloma; and P-CD70-ALLO1 under preclinical development to treat hematological indications. It is also involved in the development of P-MUC1C-ALLO1 that is in Phase I trial for treating a range of solid tumors, including breast, colorectal, lung, ovarian, pancreatic, and renal cancers; P-PSMA-ALLO1, an autologous chimeric antigen receptor T cell (CAR-T) product candidate that is in preclinical development for the treatment of patients with metastatic castrate resistant prostate cancer (mCRPC); and P-PSMA-101, an allogeneic CAR-T product candidate under Phase 1 clinical trial for treating mCRPC. In addition, the company engages in the development of P-FVIII-101, a clinical stage liver-directed gene therapy for the in vivo treatment of hemophilia A; P-OTC-101, a clinical stage liver-directed gene therapy for the in vivo treatment of ornithine transcarbamylase deficiency; and P-PAH-101, a clinical stage liver-directed gene therapy for the in vivo treatment of phenylketonuria. It has a research collaboration and license agreement with F. Hoffmann-La Roche Ltd, and Hoffmann-La Roche Inc. The company was incorporated in 2014 and is headquartered in San Diego, California. As of January 7, 2025, Poseida Therapeutics, Inc. operates as a subsidiary of Roche Holdings, Inc.