2seventy bio, Inc., a cell and gene therapy company, focuses on the research, development, and commercialization of treatments for cancer in the United States. The company's products pipeline includes Abecma, a chimeric antigen receptor T-cell product candidates for the treatment of multiple myeloma. It has a collaboration arrangement with Bristol Myers Squibb Company. 2seventy bio, Inc. was incorporated in 2021 and is headquartered in Cambridge, Massachusetts.