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Alpha-thalassemia mental retardation syndrome : ウィキペディア英語版 | Alpha-thalassemia mental retardation syndrome
Alpha-thalassemia mental retardation syndrome (ATRX), also called alpha-thalassemia X-linked mental retardation, nondeletion type or ATR-X syndrome, is a condition caused by a mutated gene. Females with this mutated gene have no specific signs or features, but may demonstrate skewed X chromosome inactivation. Hemizygous males tend to be moderately intellectually disabled and have physical characteristics including coarse facial features, microcephaly (small head size), hypertelorism (widely spaced eyes), a depressed nasal bridge, a tented upper lip, and an everted lower lip. Mild or moderate anemia, associated with alpha-thalassemia, is part of the condition. It is associated with ''ATRX''. ==External links==
* ( GeneReviews/NCBI/NIH/UW entry on Alpha-Thalassemia X-Linked Mental Retardation Syndrome; ATRX Syndrome; Alpha Thalassemia/Mental Retardation, X-Linked; XLMR-Hypotonic Face Syndrome ) * ( OMIM entries on Alpha-Thalassemia X-Linked Mental Retardation Syndrome )
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