Journal
AMERICAN JOURNAL OF MEDICAL GENETICS PART A
Volume 161, Issue 8, Pages 2016-2019Publisher
WILEY
DOI: 10.1002/ajmg.a.35999
Keywords
duplication; 1q43q44; macrocephaly; AK 3; intellectual disability
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Somatic and germline duplications of AKT3 and activating mutations of this gene have been reported in individuals with megalencephaly and hemimegalencephaly. We report on a patient with macrocephaly and a 3?Mb duplication on 1q43q44 that includes AKT3. This duplication was detected by array comparative genomic hybridization. The patient presented with moderate developmental delays in gross motor movements and speech. She also had macrocephaly, frontal bossing, hypertelorism, wide nasal bridge, small alae nares, short philtrum, prominent upper lip, and low-set, protruding ears. The 3?Mb duplicated region contained 15 genes including AKT3. The observation of megalencephaly in a child with 1q43q44 duplication provides further evidence of involvement of AKT3 dosage imbalances in brain growth disturbance. (c) 2013 Wiley Periodicals, Inc.
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