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Autistic and Rett‐like features associated with 2q33.3–q34 interstitial deletion
Author(s) -
Jang DaeHyun,
Chae Hyojin,
Kim Myungshin
Publication year - 2015
Publication title -
american journal of medical genetics part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.064
H-Index - 112
eISSN - 1552-4833
pISSN - 1552-4825
DOI - 10.1002/ajmg.a.37119
Subject(s) - rett syndrome , microcephaly , genetics , candidate gene , biology , creb1 , comparative genomic hybridization , hypotonia , gene , mecp2 , chromosome , phenotype , creb , transcription factor
We describe the fourth reported case of a de novo 2q33.3–q34 interstitial deletion and review the literature in attempt to identify relevant candidate genes. A 15‐month‐old female patient presented for evaluation with poor eye contact and developmental delay. She had microcephaly and mild dysmorphic features, such as downslanting palpebral fissures, high forehead, small mouth, high palate, and general hypotonia. At 30 months of age, she was referred to the genetic clinic for an evaluation of persistent developmental delay, autistic traits, and Rett‐like features, including bruxism and repetitive movement of the left hand. Chromosome analysis revealed 46,XX at the 550 band level. No abnormalities were found on analysis of MECP2 gene for Rett syndrome and a DNA methylation test for Prader–Willi syndrome. An array comparative genomic hybridization analysis revealed a de novo 2q33.3–q34 heterozygous deletion (206,048,173–211,980,867). The deletion was estimated to be 5.9 Mb in size and contained 34 known genes. Candidate genes were identified as NRP2 , ADAM23 , KLF7 , CREB1 , MAP2 , UNC80 , and LANCL1 for the 2q33.3–q34 interstitial deletion. © 2015 Wiley Periodicals, Inc.