Thinking About Starting Testosterone for XXY/XXYY/XXXY

Presentation slides from the 2017 AXYS Family Conference presentation: Thinking About Starting Testosterone for XXY/XXYY/XXXY  (PDF) Presented by Shanlee Davis, MD, MSCS

Klinefelter Syndrome and Other Sex Chromosomal Aneuploidies

The term Klinefelter syndrome (KS) describes a group of chromosomal disorder in which there is at least one extra X chromosome to [...]

ADHD – More research from the team at the eXtraordinarY Kids Clinic in Denver

Attention-Deficit Hyperactivity Disorder Symptoms in Children and Adolescents with Sex Chromosome Aneuploidy: XXY, XXX, XYY, and XXYY Tartaglia, Nicole R. MD; Ayari, [...]

Timing of Diagnosis of 47,XXY and 48,XXYY: A Survey of Parent Experiences

47,XXY/Klinefelter syndrome is the most common sex chromosomal aneuploidy, yet 64% of males with this condition go undiagnosed. 48,XXYY is less common [...]

Clinical research: Extra X impairs awareness of others’ minds

Kate Yandell Published: June 13, 2014 References: 1.) van Rijn S. et al. Genes Brain Behav. Epub ahead of print (2014) 2.) Bishop D.V. [...]

48,XXYY, 48,XXXY and 49,XXXXY Syndromes: Not Just Variants of Klinefelter Syndrome

Tartaglia, Ayari, Howell, D'Epagnier, Zeitler ePublished: April 9, 2011 ABSTRACT Sex chromosome tetrasomy and pentasomy conditions occur in 1:18,000-1:100,000 male births. While [...]

Brain and behavior in 48, XXYY syndrome

ePublished: April 15, 2015 Alli P. Hanley, Jonathan D. Blumenthal, Nancy Raitano Lee, Eva H. Baker, Liv S. Clasen, Jay N. Gied ABSTRACT The phenotype of [...]

A New Look at XXYY Syndrome: Medical and Psychological Features

Read this scholarly article about the medical and psychological features of XXYY Syndrome.

Tremor in 48,XXYY Syndrome

Read the scholarly article regarding tremor in individuals with 48,XXYY Syndrome.