Abstract
Williams-Beuren syndrome (WBS) is a rare genetic disease, which incidence is estimated in 1:10,000 individuals. It is caused by heterozygous microdeletion of a region of approximately 1.5 to 1.8 MB in 7q11.23. Intellectual disability, usually the moderate level, is found on 75% of individuals with WBS. This project aims to investigate the impact of WBS on Brazilian's family quality of lif…