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The TESTO Study

Diagnosis: 47,XXY / Klinefelter syndrome
Age: Less than 3 months of age
COMIRB number: 17-1317
Compensation: No

Purpose of the study

This research study will learn more about the effects of testosterone shots on body fat and development in infants with XXY/Klinefelter syndrome.

Research details

This study is 6 months long and includes three in-person visits at the Children's Hospital Colorado. At the visits your baby will have a:

Developmental evaluation
Body fat measurement in a special scale
Blood draw, urine and stool collection
Physical examination

All infants in the study will receive testosterone shots.

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