G1 Therapeutics, Inc. operates as a clinical-stage biopharmaceutical enterprise focused on identifying, advancing, and ultimately commercializing small-molecule therapeutics to address various cancers. Their flagship commercial offering, COSELA, is designed to reduce chemotherapy-induced bone marrow suppression in adult patients with extensive-stage small cell lung cancer, administered prior to specific platinum/etoposide- or topotecan-containing regimens. The company is also actively progressing several investigational compounds.