Ulnar-Mammary Syndrome, also known as schinzel syndrome,is related to ritscher-schinzel syndrome and ritscher-schinzel syndrome 2,and has symptoms including hypohidrosis, split hand and abnormality of the fingernails. An important gene associated with Ulnar-Mammary Syndrome is TBX3 (T-Box 3), and among its related pathways is Heart Development. Affiliated tissues include breast, pituitary and bone, and related mousephenotypes are muscle and craniofacial