Saturday, December 03, 2016

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

Welcome to AXYS

How can we assist you?

Help With Prenatal Diagnosis

Genetic Counselor Tools

Tell Me About 47, XXY

Tell Me About Trisomy X

Tell Me About 47, XYY

We offer support through a network of volunteers for each of the conditions we serve. You may access this network by calling us on our toll-free number from anywhere in the U.S. or Canada, (888) 999-9428, from outside the U.S. at (303) 400-9040, or by sending an email to Please provide your email address, phone number and location. International callers, please provide your country code. All general inquiries should be directed to

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AXYS Plans and Goals
AXYS Achievements

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Important News


Klinefelter Syndrome Research

AXYS Family Conference: Aurora, CO, June 24-25, 2017

(Registration and Hotel Information coming in January) 

Fall 2016 Newsletter

American College of Medical Genetics updated position on Noninvasive Prenatal Screening

Trisomy X Research News

Advances in the Interdisciplinary Care of Children with Klinefelter Syndrome

Klinefelter syndrome: current management and research challenges

AXYS AXYON Registry: Help support research!

The AXYS axyon patient registry is where you can go to help us gather the data about how having an x & y chromosome variation is impacting you.


Books on X and Y Chromosome Variations from the eXtraordinarY Kids Clinic

The eXtraordinarY Kids Clinic released a series of four books for children with X&Y chromosome variations.

                                                 Click image for book offer.
Copyright 2016 by AXYS