Xuanzhu Biopharmaceutical Co., Ltd. engages in the development, industrialization, and commercialization of small-molecule chemical drugs and macromolecular biopharmaceuticals in China. Its lead product candidates include Core- KBP-3571 for the treatment of duodenum ulcers; XZP-3287, a CDK4/6 inhibitor for the treatment of HR+/HER2 advanced breast cancer; and XZP-3621, a first-line treatment for patients with anaplastic lymphoma kinase-positive advanced non-small-cell lung cancer. The company also develops KM501, a first-in-class HER2/HER2 bispecific antibody drug conjugate, which is in Phase I clinical trial; KM602, which is in Phase I clinical trial for anti-tumor; XZP-7797, a selective and brain-penetrating poly ADP-ribose polymerase 1 inhibitor; and XZP-6924, a ubiquitin-specific protease 1 (USP1) inhibitor. In addition, it develops XZB-0004, an oral small molecule anexelekto inhibitor; XZP-6877, a DNA-dependent protein kinase inhibitor; NG-350A, a next-generation oncolytic viral therapy; XZP-5610, a non-steroid farnesoid X receptor; and XZP-6019, a first-in-class ketohexokinase (KHK) inhibitor. The company was founded in 2008 and is headquartered in Beijing, China. Xuanzhu Biopharmaceutical Co., Ltd. is a former subsidiary of Sihuan Pharmaceutical Holdings Group Ltd.