The family of nineteen Ulaş, who live in a rural area of southern Turkey, has been the best example of the syndrome. Tan said that five of them walked like they were on four legs, using their feet and palms of their hands. “Bear crawl” is the name for this type of movement in babies, which is a rare stage before and sometimes after they learn to walk on two feet. The people in the affected family also have trouble learning and speaking. Tan said that these things are signs of the Uner Tan syndrome.
In January 2008, Tan wrote about another family in southern Turkey with four men and two women.
There are also four other cases of UTS in families that are not related to each other. Two of the men can’t stand up, and some of the others can stand up but can’t take a step. In less severe cases, the person walks on their toes, which is a normal stage in how a child learns to walk.
