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Taragarestrant is an orally bioavailable selective estrogen receptor degrader (SERD) developed by Inventis Bio for the treatment of estrogen receptor-positive (ER+) breast cancer. Structurally similar to AZD9496, taragarestrant has demonstrated potent efficacy across multiple breast cancer cell lines expressing ER and related xenograft models. In preclinical studies, taragarestrant exhibited anti-tumor activity, warranting further clinical investigation.[1]
A phase I study (NCT03471663) evaluated taragarestrant in females with ER+/HER2- advanced or metastatic breast cancer, both as monotherapy and in combination with the CDK4/6 inhibitor palbociclib.[2] A phase III clinical trial has been initiated in China in patients with ER+/HER2- advanced or metastatic breast cancer.[3]