View Full Version : Scientists Home in on the Human 'Sociability' Gene

08-11-2016, 09:33 AM
Williams syndrome is caused by a deletion of a specific set of 25 contiguous genes on chromosome 7. The disorder affects about 1 in 10,000 people worldwide, and about 20,000 Americans currently have the condition, according to the Williams Syndrome Association, a patient-advocacy group. People with Williams syndrome tend to crave social interactions.