48,XXXX (Tetrasomy X)
rarediseases.info.nih.gov/diseases/7754/tetrasomy-x
48,XYYY
rarediseases.info.nih.gov/diseases/11985/48xyyy
www.ncbi.nlm.nih.gov/pmc/articles/PMC5771943/
49,XXXXX (Pentasomy X)
rarediseases.org/rare-diseases/penta-x-syndrome/
rarediseases.info.nih.gov/diseases/5678/49xxxxx-syndrome
49,XXXXY
48,XXYY, 48,XXXY and 49,XXXXY Syndromes: Not Just Variants of Klinefelter Syndrome by Dr. Nicole Tartaglia et al.
groups.yahoo.com/neo/groups/49variant/info
49,XYYYY
www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&Expert=99330
More Tetrasomy and Pentasomy information and support coming soon.