RayzeBio, Inc. develops radiopharmaceutical therapeutics (RPT) for the treatment of cancer. The company's lead drug candidate is RYZ101, which is in phase 3 clinical trial for the treatment of gasteroenteropancreatic neuroendocrine tumors (GEP-NETs). It also develops RYZ801, a novel proprietary peptide that targets GPC3 for delivery of Ac225 for the treatment of hepatocellular carcinoma (HCC); RYZ811, a paired diagnostic imaging agent with the peptide binder, chelator, and Ga68 as the radioisotope; and a novel proprietary small molecule that targets CA9 for delivery of Ac225 for the treatment of ccRCC. The company was incorporated in 2020 and is based in San Diego, California.