Zentalis Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company. It is focused on discovering and developing small molecule therapeutics targeting cancers. The company's lead programs consist of ZN-c5, an oral selective estrogen receptor degrader for estrogen-receptor-positive, HER2-negative breast cancer which is in clinical stage. It operates principally in New York and San Diego. Zentalis Pharmaceuticals, Inc. is based in NEW YORK.