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Congenital microcephaly and chorioretinopathy due to de novo heterozygous KIF11 mutations: Five novel mutations and review of the literature
Author(s) -
Mirzaa Ghayda M.,
Enyedi Laura,
Parsons Gretchen,
Collins Sarah,
Medne Livija,
Adams Carissa,
Ward Thomas,
Davitt Bradley,
Bicknese Alma,
Zackai Elaine,
Toriello Helga,
Dobyns William B.,
Christian Susan
Publication year - 2014
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.36707
Subject(s) - microcephaly , lymphedema , medicine , cockayne syndrome , sensorineural hearing loss , dysplasia , intellectual disability , hearing loss , pediatrics , genetics , pathology , biology , audiology , gene , xeroderma pigmentosum , cancer , psychiatry , breast cancer , dna repair
The microcephaly‐lymphedema‐chorioretinal dysplasia (MLCRD) syndrome is a distinct microcephaly syndrome. The hallmark features, microcephaly, chorioretinopathy, and lymphedema are frequently recognized at birth. Another clinical entity, the chorioretinal dysplasia, microcephaly and mental retardation syndrome (CDMMR) is a highly overlapping syndrome characterized by more variable lymphedema. Recently, heterozygous mutations in KIF11 , a gene encoding a critical spindle motor protein of the Kinesin family, have been reported in individuals with MLCRD, and in individuals with CDMMR. This finding is suggestive of a single clinically variable spectrum. Here, we report on de novo novel mutations of KIF11 in five individuals with severe microcephaly, marked simplification of the gyral pattern on neuroimaging, bilateral chorioretinopathy, and developmental delay. Three patients had congenital lymphedema, and one had congenital bilateral sensorineural hearing loss. This report, therefore, further expands the clinical and molecular spectrum of KIF11 ‐associated microcephaly. © 2014 Wiley Periodicals, Inc.