Journal
CLINICAL GENETICS
Volume 70, Issue 1, Pages 43-48Publisher
WILEY
DOI: 10.1111/j.1399-0004.2006.00635.x
Keywords
androgen receptor; developmental problems; growth; imprinting; Klinefelter syndrome
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Studies on Turner syndrome suggested the presence of X-chromosomal-imprinted genes involved in social and verbal cognition. Imprinted genes on autosomes were shown to affect growth. Could imprinting of such genes on the X chromosome also influence psychomotor development and growth in men with Klinefelter syndrome (KS), who have a supernumerary X? We recorded anthropometric and psychomotor development parameters for 61 males with KS (age range 2-56 years). In 54 cases, we were able to assess intelligence quotient (IQ) and found that impaired speech - and motor developmental problems were reported significantly more often in the paternal X - than in the maternal X group (P = 0.02). We found some significant (P < 0.05) increased body size parameters in the paternal X group, which concurs with data reporting a growth promoting influence of paternally derived genes. Our results suggest X-chromosomal imprinting occurs in males with KS.
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