Be The Match is a nonprofit organization that connects patients with blood cancers, like leukemia, to potential bone marrow donors. It operates a national registry of volunteers who are willing to donate their bone marrow or peripheral blood stem cells to those in need of a transplant. The organization also provides education and support for patients and their families throughout the transplant process. By raising awareness about the importance of bone marrow donation, Be The Match aims to increase the number of registered donors and improve the chances of finding a match for patients.