Founded, supported, and run by parents just like you, for over 29 years CDO has been supporting those born with rare chromosome and gene mutation disorders. Help us continue this vital work. Alone we may go unnoticed, together our intensity cannot be missed. #youarenotalone
Search our database of registered disorders.
Learn the basics with our Introduction to Chromosomes and Genetic & Medical Glossary.
CDO’s unique algorithm provides matches for those with even the most complex disorders.
Ask our geneticist your technical questions and search our archived FAQs for more details.
Your generous donation expands ongoing research and our outreach programs. Individuals, families and medical professionals all provide vital information and help to raise awareness and understanding of rare chromosome disorders.DONATE NOW!
Help us in our efforts to raise awareness of rare chromosome disorders by visiting our online store.
and Amazon will make a donation to:
Chromosome Disorder Outreach Inc.