Whole-genome copy number variation analysis in anophthalmia and microphthalmia.
Whole-genome copy number variation analysis in anophthalmia and microphthalmia.
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全基因组拷贝数变化分析和微观恐怖分子。
DOI:
10.1111/cge.12202
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发表时间:
2013-11
影响因子:
3.5
通讯作者:
Semina EV
中科院分区:
文献类型:
--
作者:
Schilter KF;Reis LM;Schneider A;Bardakjian TM;Abdul-Rahman O;Kozel BA;Zimmerman HH;Broeckel U;Semina EV
Anophthalmia and microphthalmia (A/M) represent severe developmental ocular malformations. Currently, mutations in known genes explain less than 40% of A/M cases. We performed whole genome copy number variation analysis in sixty patients affected with isolated or syndromic A/M. Pathogenic deletions of 3q26 (SOX2) were identified in four independent patients with syndromic microphthalmia. Other variants of interest included regions with a known role in human disease (likely pathogenic) as well as novel rearrangements (uncertain significance). A 2.2-Mb duplication of 3q29 in a patient with nonsyndromic anophthalmia and an 877-kb duplication of 11p13 (PAX6) and a 1.4-Mb deletion of 17q11.2 (NF1) in two independent probands with syndromic microphthalmia and other ocular defects were identified; while ocular anomalies have been previously associated with 3q29 duplications, PAX6 duplications, and NF1 mutations in some cases, the ocular phenotypes observed here are more severe than previously reported. Three novel regions of possible interest included a 2q14.2 duplication which cosegregated with microphthalmia/microcornea and congenital cataracts in one family, and 2q21 and 15q26 duplications in two additional cases; each of these regions contains genes that are active during vertebrate ocular development. Overall, this study identified causative copy number mutations and regions with a possible role in ocular disease in 17% of A/M cases.
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