The Ontario Rett Syndrome Association (O.R.S.A.) is a volunteer, not-for-profit charity for parents, caregivers, researchers, medical professionals and other interested agencies and individuals. O.R.S.A. became incorporated in 1991. The association provides support to families, awards grants for Canadian research projects, funds three Rett syndrome clinics and developed the Canadian Rett Syndrome Registry. O.R.S.A. advocates to the needs of individuals with Rett syndrome and their families provincially and nationally.