Williams syndrome

  Chromosome 7q11.23 deletions and duplications cause different symptoms. Segment 7q11.23 contains 25-27 genes. Both deletions and duplications of this segment are known to cause different disorders. Deletions of 7q11.23 cause (a well-recognized) Williams syndrome; duplication of 7q11.23 cause a wide range of clinical manifestations that are hard to recognize... Read More