<prompt> Diabetes mellitus is present in all exceptFanconi syndromeNoonan syndromeAtaxia telengiectasiaMyotonic dystrophy  <response>: The disorder is characterized by progressively impaired coordination of voluntary movements ataxia, the development of reddish lesions of the skin and mucous membranes due to permanent widening of groups of blood vessels telangiectasia, and impaired functioning of the immune system i.e., cellular and humoral Ref Robbins 9e pg 243 