Klinefelter's syndrome in South African Indians and blacks.
Poly-X syndromes are very uncommon in Indian and Black South Africans. Two affected males of each race group are described; the Indians are probably the first to be reported in this country, and there are now 8 case histories of Klinefelter's syndrome in Blacks. The possible reasons for the rarity of the poly-X syndromes in South Africa are discussed and it is suggested that these syndromes are less common here than in other countries.
D000293:Adolescent; D000328:Adult; D044383:Black People; D003878:Dermatoglyphics; D006801:Humans; D007194:India / Q000208:ethnology; D007223:Infant; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000235:genetics; D008214:Lymphocytes / Q000166:cytology; D008297:Male; D012730:Sex Chromosomes; D013019:South Africa; D044465:White People