XXYY Project

Welcome to the home of information about XXYY Syndrome and the XXYY Project.

XXYY Project is a project of AXYS, the association for x & y chromosome variations.

Our vision is a world where men and boys with XXYY Syndrome lead purposeful, productive lives.
Read more about our mission.


Are you wondering if your child may have XXYY Syndrome?

Are you a parent looking for more information and how to connect with other parents?

Are you a doctor, speech therapist, occupational therapist, physiotherapist, teacher or other professional?

Are you looking to make a difference in the lives of those affected by XXYY Syndrome?


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