Ongoing and Upcoming Collaborations:

Sex Chromosomes Disorders and Brain Development

Dr. Jay Giedd, a child and adolescent psychiatrist and developmental neuroscientist at the National Institutes of Health (NIH) in Bethesda, Maryland, is recruiting XXYY, XYY and 47XXY and XXX twin subjects between the ages of four and 25 for a study involving the use of magnetic resonance imaging (MRI) to study the effects of sex chromosomes on brain development and to help uncover core biological features of X and Y chromosome aneuploidy conditions.

Wilmer Eye Institute at Johns Hopkins

We are looking forward to collaborating with the Wilmer Eye Institute on eye tracking studies involving children with X & Y chromosomal disorders. We are interested to see how saccadic patterns and visual attention could correlate to certain disorders or dysfunction.

Biomedical Ethics Program At Mayo Clinic

We are collaborating with researchers at MAYO to investigate psychological, educational, behavioral and developmental effects on individuals with sex chromosome abnormalities and their families. This collaboration will lead to more awareness and understanding of these disorders and their impact on those affects and their support system.

Contact Us

Jonathan Blumenthal
Project Coordinator, NIH Klinefelter Syndrome Study
NIMH Child Psychiatry Branch, Building 10, Room 4C110
Bethesda, MD 20892-1367
Phone: 301-435-4516
Fax: 301-480-8898
E-mail:   •
Trial Web page: