8q21.11 microdeletion in two patients with syndromic peters anomaly. Am J Med Genet A 2016 Sep;170(9):2471-5
Date
07/06/2016Pubmed ID
27378168Pubmed Central ID
PMC5119633DOI
10.1002/ajmg.a.37840Scopus ID
2-s2.0-84982095337 (requires institutional sign-in at Scopus site) 17 CitationsAbstract
Peters anomaly is a form of anterior segment dysgenesis characterized by central ocular opacity and corneo-lenticular adhesions. Isolated and syndromic Peters anomaly can be observed and demonstrate significant genetic heterogeneity. We report the identification of overlapping 8q21.11 deletions in two patients with syndromic Peters anomaly via whole exome sequencing and chromosomal microarray analyses. Microdeletions of 8q21.11 were recently reported in 10 patients with highly variable phenotypes involving craniofacial features, ptosis, intellectual disability, abnormalities of the hands/feet and other defects; sclerocornea and/or microphthalmia were reported in three cases. The two additional cases presented in this report expand the phenotypic spectrum of 8q21.11 microdeletions to include Peters anomaly (seen in both patients) and persistent primary dentition (seen in one patient with a larger deletion). The two novel deletions include the ZFHX4 and PEX2 genes, which were also affected in all three previous cases involving ocular anomalies. Screening of the remaining alleles of ZFHX4 and PEX2 did not identify any additional likely pathogenic variants in either patient, suggesting a dominant mechanism (haploinsufficiency) for the identified deletion. This report provides further insight into the phenotypes associated with 8q21.11 deletions and, for the first time, reports Peters anomaly as an additional ocular feature; screening for copy number variations of the 8q21.11 region should be considered in patients with Peters anomaly and related syndromic features. © 2016 Wiley Periodicals, Inc.
Author List
Happ H, Schilter KF, Weh E, Reis LM, Semina EVAuthors
Kala Schilter in the CTSI department at Medical College of Wisconsin - CTSIElena V. Semina PhD Chief, Professor in the Ophthalmology and Visual Sciences department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
Anterior Eye SegmentChild
Chromosome Deletion
Chromosomes, Human, Pair 8
Computational Biology
Corneal Opacity
DNA Copy Number Variations
Exome
Eye Abnormalities
Facies
Female
Genetic Association Studies
High-Throughput Nucleotide Sequencing
Humans
Infant
Male
Phenotype
Syndrome
