KS&A (Knowledge, Support, and Action)

Organization URL(s)


Other Contact Information

P.O. Box 872
Pine, CO 80470-0872
1-888-999-9428 (Voice - Toll-free)
303-400-9040 (Voice)
303-838-0753 (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.

Online Resources

Print Resources

Review Date

Monday, Sep 19, 2011