P.O. Box 461047
Aurora,
CO 80046-1047
888-999-9428 (Voice - Toll-free)
303-400-9040 (Voice, Outside the US)
303-974-5173 (FAX)
KS&A is a non-profit organization addressing the needs of the approximately 1 out of 500 individuals who were born with one or more extra X and/or Y chromosomes, as well as their families and the clinicians, educators and research scientists serving them. Conditions addressed include 47,XXY; Klinefelter syndrome; Trisomy X; 47,XYY syndrome and the approximately 20 additional variations involving additional X and/or Y chromosomes and mosaicism.