Familial X-linked mental retardation with an X chromosome abnormality.
نویسندگان
چکیده
منابع مشابه
Familial X-linked mental retardation with an X chromosome abnormality and macro-orchidism.
An X-linked pattern of transmission observed in four families with familial mental retardation in several generations was associated with a probable secondary constriction at the distal end of the q arms of the X chromosome. Twenty retarded males and no retarded females were observed. All available live retarded males and most of their normal mothers were found to have the abnormal X chromosome...
متن کاملX-linked mental retardation without physical abnormality: Renpenning's syndrome.
A number of families have been reported in which mental retardation appeared to be segregating as an X-linked recessive (Martin and Bell, 1943; Allan, Herndon, and Dudley, 1944; Losowsky, 1961; Renpenning et al, 1962; Dunn et al, 1962/1963; Neuhauser et al, 1969; Snyder and Robinson, 1969; Neuhauser and Zerbin-Rudin, 1970). We reported 5 such families (Turner, Turner, and Collins, 1971b) in whi...
متن کاملX-linked mental retardation.
A survey of the mentally retarded children with an IQ between 30 and 55 born in a 10-year period (1955-64) and now of school age was carried out in New South Wales. The number of propositi who had a similarly affected sib of the same sex was ascertained; 58 boys had a similarly affected brother(s) and 22 girls had a similarly affected sister(s). It is suggested that the excess of affected broth...
متن کاملX-linked mental retardation with marfanoid habitus.
Here we report on two pairs of mildly to moderately mentally retarded brothers with marfanoid habitus and similar craniofacial changes. They had a long and narrow face, small mandible, high-arched palate, and hypernasal voice, as previously reported by Lujan et al (Am J Med Genet 17:311-322, 1984) in four mentally retarded males of a large kindred. The present data suggest the existence of a sp...
متن کاملX - Linked Mental Retardation without Physical Abnormality ( Renpenning ' s Syndrome ) in Sibs in an Institution
A number of families have been reported in which mental retardation appeared to be segregating as an X-linked recessive (Martin and Bell, 1943; Allan, Herndon, and Dudley, 1944; Losowsky, 1961; Renpenning et al, 1962; Dunn et al, 1962/1963; Neuhauser et al, 1969; Snyder and Robinson, 1969; Neuhauser and Zerbin-Rudin, 1970). We reported 5 such families (Turner, Turner, and Collins, 1971b) in whi...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 1977
ISSN: 1468-6244
DOI: 10.1136/jmg.14.1.46