Organizations providing "Rett Syndrome Support," such as the International Rett Syndrome Foundation (IRSF), are dedicated to transforming the lives of individuals and families affected by this rare genetic neurological disorder, which severely impairs movement, communication, and cognitive abilities, primarily in females. Their core mission is multi-faceted: to accelerate research toward effective treatments and a cure, including funding breakthrough discoveries like the identification of the causal $MECP2$ gene; to empower families by providing critical resources, information, and support services from diagnosis onward; and to engage in advocacy and awareness efforts within the medical, scientific, and public communities.