Rege Nephro Co., Ltd. (Headquarter: Kyoto, Japan; Chief Executive Officer: Akifumi Morinaka) has announced that it has successfully acquired Tamibarotene-related clinical and non-clinical assets from Syros Pharmaceuticals, Inc. (Headquarters: Boston, MA; NASDAQ:SYRS), through a mutual agreement. The acquisition was completed on February 26, 2025.

Tamibarotene (RN-014) is a retinoic acid receptor agonist for which Rege Nephro is currently conducting a Phase 2 clinical trial in Japan in autosomal dominant polycystic kidney disease (ADPKD). Rege Nephro expects to initiate clinical trials in the United States, after confirming the efficacy and safety in Japan. Syros Pharmaceuticals has previously carried out a Phase 3 clinical trial of Tamibarotene for indications including myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML).

This acquisition, encompassing their clinical and non-clinical data including human safety study for New Drug Application (NDA), contracts with a contract manufacturing organization (CMO), and Tamibarotene active pharmaceutical ingredient (API) and drug products, is expected to enhance Rege Nephro's capabilities and streamline operations for its clinical trial operations in the United States.