Lyell Immunopharma, Inc., a T cell reprogramming company, engages in developing T cell therapies for patients with solid tumors. The company develops therapies using technology platforms, such as Gen-R, an ex vivo genetic reprogramming technology to overcome T cell exhaustion; and Epi-R, an ex vivo epigenetic reprogramming technology to generate population of T cells with durable stemness. Its pipeline includes LYL797, a T cell product candidate for the treatment of non-small cell lung cancer and triple negative breast cancers; LYL845 for multiple solid tumors; and NY-ESO-1 for synovial sarcoma and other solid tumor indications. Lyell Immunopharma, Inc. was incorporated in 2018 and is headquartered in South San Francisco, California.