Cardiff Oncology, Inc. is an oncology therapeutics company, which engages in the development of drugs that target mitosis for the treatment of various types of cancer. It is focused on developing onvansertib, a first-in-class, third-generation Polo-like Kinase 1 (PLK1) inhibitor, in combination with standard-of-care chemotherapy and targeted therapeutics. The firm's clinical programs include KRAS-Mutated Metastatic Colorectal Cancer (mCRC), Resistant Metastatic Castration-Resistant Prostate Cancer (mCRPC) and relapsed or refractory Acute Myeloid Leukemia (AML). The company was founded by Gabriel M. Cerrone, L. David Tomei, Samuil Umansky, and Hovsep Melkonyan in 1999 and is headquartered in San Diego, CA.