{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T05:02:59Z","timestamp":1791435779028,"version":"4.3.3"},"reference-count":40,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2013,7,4]],"date-time":"2013-07-04T00:00:00Z","timestamp":1372896000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Dr. Heinrich-Kircher Foundation, Germany"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American J of Med Genetics Pt A"],"published-print":{"date-parts":[[2013,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:label\/><jats:p>5q14.3 deletions spanning and flanking <jats:italic>MEF2C<\/jats:italic> as well as intragenic <jats:italic>MEF2C<\/jats:italic> mutations have recently been described as a cause of severe intellectual disability, epilepsy, and muscular hypotonia, with variable brain and other anomalies. With an increasing number of patients described, the clinical presentation of the patients appears to be relatively uniform, however the structural brain phenotypes described are variable. We describe two unrelated patients with overlapping de novo interstitial deletions of 4.1 and 1.9\u2009Mb, including <jats:italic>MEF2C<\/jats:italic> in 5q14.3, one of whom had a complex brain malformation which could be best described as microcephaly with simplified gyral pattern (MSG). Expression analysis in both patients confirmed haploinsufficiency for <jats:italic>MEF2C<\/jats:italic>, decreased <jats:italic>MECP2<\/jats:italic> expression and increased <jats:italic>C3ORF58<\/jats:italic> (<jats:italic>DIA1<\/jats:italic>) expression, which is a new finding. A detailed analysis of brain and white matter abnormalities reported in patients with 5q14.3 deletion syndrome to date revealed a greater number of reported abnormalities in patients with deletions not including <jats:italic>MEF2C<\/jats:italic> than those with deletions or mutations directly affecting <jats:italic>MEF2C<\/jats:italic>. Screening an additional 43 patients with malformations of cerebral cortical development (MCD) for mutations in <jats:italic>MEF2C<\/jats:italic> and\/or deletions in 5q14.3q15, did not detect any additional mutations, allowing us to conclude that 5q14.3 deletion syndrome is a rare cause of microcephaly with simplified gyral pattern. \u00a9 2013 Wiley Periodicals, Inc.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ajmg.a.36020","type":"journal-article","created":{"date-parts":[[2013,7,4]],"date-time":"2013-07-04T09:26:24Z","timestamp":1372929984000},"page":"2124-2133","source":"Crossref","is-referenced-by-count":19,"title":["Microdeletion 5q14.3 and anomalies of brain development"],"prefix":"10.1002","volume":"161","author":[{"given":"Alrun","family":"Hotz","sequence":"first","affiliation":[{"name":"Institute of Human Genetics Albert\u2010Ludwigs University Medical Centre Freiburg Freiburg 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