TESTO: Testosterone Effects on Short-Term Outcomes in Infants With XXY

Summary

This research study in infant males with Klinefelter syndrome (47,XXY) will learn more about the effect of testosterone on early health and development. The study is a total of three visits over 6 months with assessments of motor skills, body composition (muscle and fat), and hormone levels. This is a randomized, placebo-controlled study but all infants will receive testosterone treatment during the study period. The investigators will learn how testosterone treatment in infancy effects short term outcome measures on health and development.

Timeline

Start

2017-11-06

Primary completion

2021-05-05

Completion

2021-05-05

Drugs

Indications