Forty Seven, Inc. is clinical-stage immuno-oncology company. The Company is focused on developing novel checkpoint therapies to activate macrophages in the fight against cancer. The Company’s lead product candidate, 5F9, is a humanized IgG4 subclass monoclonal antibody against CD47 that is designed to interfere with recognition of CD47 by the SIRPa receptor on macrophages. The Company’s another product FSI-189, is an antibody that binds to SIRPa and initiate Phase I solid tumor trials for FSI-189. The Company is investigating 5F9 in multiple Phase I and Phase II trials in various cancers including acute myeloid leukemia (AML), non-Hodgkin's lymphoma (NHL) and colorectal carcinoma (CRC), and ovarian cancer, as both a monotherapy and in combination with other therapies, such as rituximab and cetuximab. In addition to the 5F9, which is an antibody that binds to CD47 blocking its binding to SIRPa.