The eXtraordinarY Kids Clinic addresses the complex needs of children with a sex chromosome aneuploidy through multidisciplinary care. Come see how we’re improving outcomes and quality of care at our clinic.

rs=h 125

To provide a central location for factual information that is easily digestible to  understand, as well as have a central location for support services.
To provide information and awareness to education and health professionals and the wider community; so we can advocate and create positive changes within our community, for our community.


Nemours/Alfred I. duPont Hospital for Children has launched a comprehensive new program for children with X and Y chromosome variations. The  eXtraordinarY Kids Clinic brings together a team of experts in medical and therapeutic disciplines to address the unique needs of patients with these common but frequently undiagnosed genetic conditions.


Colton’s XXXtraordinarY Cause is a 501(c)(3) non-profit, volunteer-managed organization.  Our mission is to raise awareness about rare disorders, and to raise funds to support research and treatment for children who have been diagnosed with a rare disorder. We host special events to achieve this goal, and rely on the generosity of individuals, foundations, and corporations to bridge the gaps between financial needs and resources for our benefactors. Ultimately, we seek to raise the kind of awareness necessary to promote early diagnosis and intervention in honor of children like Colton.

Screen Shot 2019-06-27 at 12.58.13 PM

My name is Jakob, 2 years ago I was diagnosed with Klinefelter syndrome.  I am 30 years old and live in Bavaria, Germany.  My website is here to help people with up to date research and real information.  

Klinefelter syndrome, xxy, 47xxy

Helping promote awareness and support happy healthy lives through positive education about XXY / Klinefelter syndrome in New Zealand. Connecting with organizations and associations learning of and sharing XXY / Klinefelter syndrome experience internationally.


Emory Logo

Families have a place to turn for help with sex chromosome disorders who have been falling through the cracks for decades. Our clinic meets a tremendous needs

John hopkins Logo

We are a comprehensive multidisciplinary health care system designed to care for boys and men with Klinefelter syndrome. Our medical specialists act as a team to provide the most up to date services to maintain the long-term health of men with Klinefelter syndrome.


We represent the interests of boys and men with the Klinefelter Syndrome. We aim to improve the welfare of these boys and men, their parents, partners and other directly involved parties.

With our experiences, we strive for more attention for the syndrome, more attention for the boys and men, the parents and partners, better care and assistance and for a better quality of life. 


The association 47xxy Klinefelter syndrome offers reliable advice to Klinefelter syndrome carriers and their relatives, parents and expectant parents. We want to encourage people who have been diagnosed with Klinefelter syndrome. 

pasted image 0

The Children’s Hospital of Philadelphia offers a collaborative program for Klinefelter Syndrome (and all X and Y variations). This clinic consists of an interdisciplinary team including endocrinologists, geneticists, genetic counselors, psychologists, developmental pediatricians, reproductive urologists, and nurse practitioners. All of our specialists have experience with Klinefelter Syndrome (and all X and Y variations) and welcome the opportunity to work together and collaborate regarding the complex and unique needs of this patient population.


We were founded in 1992 as a volunteer self-help organization at a federal level with 600 active members and growing.  Our goal is to support people with Klinefelter syndrome as well as their relatives.


To offer support and information to all affected by KS and XXY

To raise awareness of KS and XXY especially amongst the medical profession

To promote research into the management of KS and XXY


The mission of AXYS is to help individuals with one or more extra X and/or Y chromosomes and their families to lead fuller, more productive lives. 

AXYS fulfills this mission by satisfying previously unmet needs and improving the lives of those impacted by the X and Y chromosome aneuploidies including Klinefelter syndrome (47,XXY), Trisomy X (47,XXX), 47,XYY syndrome, 48,XXYY, and related genetic conditions through:

The Spanish Klinefelter Syndrome Association offers support and information to all those affected or interested in Klinefelter Syndrome