Article
Expanding phenotype of XNP mutations: mild to moderate mental retardation.
American journal of medical genetics - 1 Jul 2002
Yntema Helger G, Poppelaars Francis A, Derksen Esther, Oudakker Astrid R, van Roosmalen Tanja, Jacobs Anja, Obbema Hanneke, Brunner Han G, Hamel Ben C J, van Bokhoven Hans
Abstract excerpt
Mutations in the XNP gene have been reported in alpha thalassemia/mental retardation (MR) syndrome (ATR-X) and other severe X-linked MR conditions with facial dysmorphisms. In this report, we describe a missense mutation in exon 18 in a family with borderline to moderate MR. Like other disorders associated with an XNP mutation, skewed X-inactivation was found in all carrier females in this family. Only...
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