Abstract: Provided herein are compositions and methods for producing genomically edited cells expressing an exogenous transgene and restored or continued expression of an endogenous gene. Methods of using the genomically edited cells for treating or preventing a disease in a subject are also provided.

Abstract: The invention relates to gene expression profiles and signatures of CAR T cells. The invention provides methods and compositions of CAR T cells and populations. The invention provides assays and methods of screening subjects to assess efficacy and safety of CAR T cell treatments and therapies. The invention provides assays and methods of engineering and/or administering CAR T cells to promote efficacy and safety.

Abstract: The invention provides herein engineered regulatory T cells (Tregs), compositions thereof, and their methods of use. The Tregs described herein can be engineered to include, e.g., a chimeric antigen receptor (CAR), conferring increased stability, specificity, and immunosuppressive activity towards a target antigen. Furthermore, Tregs can also be engineered to reduce T cell cytotoxicity functions. Also provided are methods of suppressing immune response against a specific target antigen using the engineered Tregs described herein.