Body Composition in Infants With Klinefelter Syndrome and Effects of Testosterone Treatment
Status:
Completed
Trial end date:
2020-01-01
Target enrollment:
Participant gender:
Summary
This research study in infant males with Klinefelter syndrome (47,XXY) will learn more about
body composition (muscle and fat) and male hormones and look at the effect of testosterone
shots on body composition. The Investigators know that older boys and men with Klinefelter
syndrome often have more fat compared to muscle than adults without Klinefelter syndrome, but
we do not know if this difference is present at birth or develops over time. The
Investigators will learn if body composition and motor skills are improved with testosterone
treatment in infants with Klinefelter syndrome.