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, as well as ovarian and other solid tumors; LYL845, an IV administered autologous TIL therapy for multiple solid tumors; and NY-ESO-1, a T cell product candidate for synovial sarcoma and other solid tumor indications. Lyell Immunopharma, Inc. was incorporated in 2018 and is headquartered in South San Francisco, California with additional offices in Seattle and Bothell, Washington.