This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
1q21.1 microdeletion syndrome is a chromosome abnormality where a segment of genetic material on the long arm (or q arm) of chromosome 1 at position 21.1 is missing (or deleted). Some people with this deletion have no observable features while others have variable findings that can&nb ...
For more information, visit GARD
Last Updated: 08/25/2017