 These patients will have all the common features of each individual disease, resulting in a very complex phenotype.Deletions near the distal tip of the p arm of the X chromosome are also a frequent cause of CGS.In addition to the previously described CGS that occur on the X chromosome, two other common syndromes are Langer-Giedion syndrome (caused by deletions of "TRPS1" and "EXT1" on 8q24 and WAGR syndrome (caused by deletions on 11q13 encompassing "PAX6" and "WT1".)