47,XYY

/47,XYY

Growing Up with XYY

An article with general information about XYY Syndrome. Read the entire article. An excerpt: "Approximately one boy in 1000 has XYY chromosomes. In the cells of their body, instead of 46 chromosomes including one X and one Y chromosome, they have one X and two Y chromosomes, making 47 in all. The impact of the [...]

October 30th, 2016|

Findings from an XYY Study

Read the entire article. From the introduction: "Families with a son with XYY – a single extra Y chromosome – met experts and researchers at a study day in Oxford, UK in April 2008. They heard what is already known from research conducted on boys and men with XYY who were identified in the 1960s [...]

October 30th, 2016|

Brain Morphology in Children with 47,XYY Syndrome: A Voxel and Surface-based Morphomeric Study

An article by Jean-Francois Lepage, David S. Hong, Mira Raman, Matthew Marzelli, David P. Roeltgen, Song Lai, Judith Ross, and Allan L. Reiss. Read the entire article. From the abstract: "The neurocognitive and behavioral profile of individuals with 47,XYY is increasingly documented; however, very little is known about the effect of a supernumerary Y-chromosome on [...]

October 30th, 2016|

Sex Chromosomes and the Brain: A Study of Neuroanatomy in XYY Syndrome

An article by Daniel M Bryant, Fumiko Hoeft, Song Lai, John Lackey, David Roeltgen, Judith Ross, and Allan L Reiss. Read the entire article. From the abstract: "AIM—To assess global and regional brain matter variations associated with XYY syndrome by comparison with Klinefelter syndrome and typical development. METHOD—We used two conceptually distinct voxel-based magnetic resonance [...]

October 30th, 2016|

An Extra X or Y Chromosome: Contrasting the Cognitive and Motor Phenotypes in Childhood in Boys with 47,XYY Syndrome or 47,XXY Klinefelter Syndrome

This is a scholarly article by Judith L. Ross, Martha P.D. Zeger, Harvey Kushner, Andrew R. Zinn, and David P. Roeltgen. Read the entire article. From the abstract: "Objective—The goal of this study was to contrast the cognitive phenotypes in boys with 47,XYY (XYY) karyotype and boys with 47,XXY karyotype (Klinefelter syndrome, KS), who share [...]

October 29th, 2016|

Comparing 47,XXY and 47,XYY boys

Here is a good research article on comparing the similarities and differences in boys with 47,XXY and 47,XYY from a neurocognitive testing standpoint. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2876236/

October 28th, 2016|

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, Natalie BA; Hutaff-Lee, Christa PhD; Boada, Richard PhD Link to article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3348431/pdf/nihms363084.pdf Please share this article with your healthcare providers and with other professionals (therapists, school support staff and administrators, etc.).

October 25th, 2016|

Autism spectrum disorders in XYY syndrome: two new cases and systematic review of the literature

By: Lucia Margari, Anna Linda Lamanna, Francesco Craig, Marta Simone, Mattia Gentile Abstract Abnormalities of the sex chromosomes (47, XXY, 47 XYY, 45,X/46,XY mosaicism) are frequently associated with Autism Spectrum Disorders (ASD), but the male predisposition to these disorders has not been clearly explained. Previously, the role of the X chromosome was considered important in [...]

October 21st, 2016|

Testicular size and shape of 47,XYY and 47,XXY men in a double-blind, double-matched population survey

E. Boisen Published: November 1979 ABSTRACT This paper reports the testicular size and shape of 12 men with 47,XYY, 14 men with 47,XXY, and 52 matched controls with 46,XY. The abnormal karyotypes were identified in a systematic population search for XYY and XXY men. The subjects and their matched controls were examined in a double-blind [...]

October 17th, 2016|

Understanding Chromosome Disorders – XYY Unique

www.rarechromo.org copyright: Unique 2014 Approximately one boy in 1000 has XYY chromosomes. In the cells of their body, instead of 46 chromosomes including one X and one Y chromosome, they have one X and two Y chromosomes, making 47 in all. The impact of the extra Y chromosome is extremely variable. The great majority of [...]

October 16th, 2016|