What are the causes of Williams syndrome? Can anyone help?
The deletion of genetic material from a specific region of Chromosome 7 is understood to cause Williams-Beuren syndrome. The genes typically deleted include CLIP2, ELN, GTF2I, GTF2IRD1, and LIMK1. The deletion of these genes, and possibly others too, is understood to contribute to the unique behavioral characteristics and other cognitive difficulties of those with Williams-Beuren syndrome. The syndrome is not usually inherited but occurs during the formation of reproductive cells in the parent of the affected individual. However, individuals with the condition have a 50% chance of the condition being inherited by their future children.