High incidence of mental retardation in Turner syndrome patients with ring chromosome X formation |
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Authors: | J P Fryns A Kleczkowska H Van Den Berghe |
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Institution: | Centre for Human Genetics, University of Leuven, Belgium. |
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Abstract: | In this report we describe and comment the high incidence of mental subnormality in a series of 21 Turner syndrome patients with ring chromosome X, diagnosed in Leuven in the period 1965-1989. In 7 of the 21 (one third) a varying degree of mental retardation, from borderline intelligence to severe mental retardation was found. In 4 of them (18.5%) mental retardation was moderate to severe. |
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