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The Turner Contact Group Ireland (T.C.G.I) is a voluntary charitable organisation which provides information and support to those affected by Turners Syndrome in Ireland. We fundraise through the mini-marathon, bag-packing, fun-runs , coffee mornings and table quizzes . Turner syndrome (TS) is a chromosomal condition that describes girls and women with common features that are caused by complete or partial absence of the second sex chromosome. The syndrome is named after Dr. Henry Turner, who was among the first to describe its features in the 1930's. TS occurs in approximately 1 of 2,500 female's born and in as many as 10% of all miscarriages Females normally have two X chromosomes (46,XX) and males have one X and one Y (46,XY). Turner syndrome individuals are missing all or part of one of their sex chromosomes. About half of girls with Turner syndrome have only one X chromosome (45,X). Another third have two X chromosomes, but part of one X is missing. Other individuals with Turner syndrome have a mosaic pattern: some of their cells are missing an X chromosome (45,X), while other cells have different chromosome composition (such as 46,XX).