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Genetic and Rare Diseases Information Center (GARD)

Trisomy 2 mosaicism

See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.


GARD Video Tutorial

  • How to Get Involved in Research – A video developed by GARD Information Specialists that explains how you can find out about research for a rare disease.

Clinical Trials & Research for this Disease

  • The National Human Genome Research Institute (NHGRI) has completed an evaluation of patients with unresolved chromosomal abnormalities. Through this study, the NHGRI may have discovered information pertinent to this chromosomal disorder. Further information about this study can be accessed through, a database developed by the U.S. National Institutes of Health, through the National Library of Medicine to provide patients, family members, and members of the public with current information on clinical research studies. To read about this study, click here. After you click on the study, review its information to determine if it provides you with useful information. Use the study’s contact information to learn more. Check this site often for regular updates or to search for specific chromosome abnormalities.

    To locate information resulting from the completed study entitled "Evaluation of Patients with Unresolved Chromosome Abnormalities" (study ID numbers 970045, 97-HG-0045; NLM Identifier NCT00001639), you can e-mail the National Library of Medicine (NLM) Customer Service at  Include the title of the study, the study ID numbers, and the NLM Identifier, and a librarian at NLM can assist you in searching the medical literature for published results on the completed clinical trial.  

Patient Registry

  • ResearchMatch is a free national research registry designed to bring together patients, healthy volunteers and researchers. Anyone from the United States can register with ResearchMatch, and a parent, legal guardian, or caretaker may register on behalf of a volunteer. Researchers from participating institutions use the ResearchMatch database to search for patients or healthy volunteers who meet the study criteria. Many studies are looking for healthy people of all ages, while some are looking for people with specific illnesses. ResearchMatch was developed by major academic institutions across the country and is funded by the National Center for Research Resources (NCRR), a center of the National Institutes of Health (NIH), the primary Federal agency for conducting and supporting medical research. Click on the link to learn more about ResearchMatch.

General Clinical Trials & Research

  • NIH Clinical Trials and You is a website developed by the National Institutes of Health (NIH) to help people learn more about clinical trials, why they matter, and how to participate.
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.