The International Rett Syndrome Foundation (IRSF) is a 501(c)(3) non-profit corporation established in July 2007 through the strategic merger of the Rett Syndrome Research Foundation and the International
Rett Syndrome Association.
IRSF is the largest private source of funds for biomedical and clinical research on Rett syndrome. The Foundation directs almost 90% of each dollar donated directly to program services. All donations specifically earmarked for research will be honored.