Instil Bio, Inc. is a clinical-stage biopharmaceutical company focused on developing a pipeline of novel therapies. The Company seeks to in-license/acquire and develop novel therapeutic candidates in diseases with significant unmet medical need. Its first such program is an engineered tumor infiltrating lymphocyte (TIL), cell therapy for the treatment of cancer. It is engaged in developing a novel class of genetically engineered TIL therapies using its Co-Stimulatory Antigen Receptor (CoStAR), platform. The Company's lead CoStAR-TIL product candidate, ITIL-306, expresses a CoStAR molecule designed to recognize folate receptor alpha (Fra), a tumor-associated antigen that is expressed on numerous solid tumors, including ovarian cancer, uterine cancer, NSCLC and renal cancer. CAR-T and TCR-T therapies are cell products composed of T cells that have been genetically engineered to recognize a specific cancer-related antigen on the surface of tumor cells.