Some types of Prader-Willi syndrome (PWS) have more genes affected, causing greater symptom severity.Older age of the mother ...
Prader-Willi syndrome is a genetic disorder caused by changes to chromosome 15. It affects growth, behavior, and learning and requires continual management to avoid potentially life threatening ...
Large and rare duplications and deletions in a chromosome region known as 22q11.2 , which involves genes that regulate cardiac development, are linked to nonsyndromic bicuspid aortic valve disease.