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Microdeletions excluding YWHAE and PAFAH1B1 cause a unique leukoencephalopathy: further delineation of the 17p13.3 microdeletion spectrum.
Genetics in Medicine ( IF 6.6 ) Pub Date : 2018-12-20 , DOI: 10.1038/s41436-018-0358-0
Lisa T Emrick 1, 2, 3 , Jill A Rosenfeld 3 , Seema R Lalani 2, 3, 4 , Mahim Jain 3, 5 , Nilesh K Desai 6 , Austin Larson 7 , Kimberly Kripps 7 , Adeline Vanderver 8 , Ryan J Taft 9 , Krista Bluske 9 , Denise Perry 9 , Honey Nagakura 10, 11 , LaDonna L Immken 10 , Lindsay C Burrage 2, 3 , Carlos A Bacino 2, 3, 4 , John W Belmont 3, 12 , Undiagnosed Diseases Network , Brendan Lee 2, 3
Affiliation  

PURPOSE Brain malformations caused by 17p13.3 deletions include lissencephaly with deletions of the larger Miller-Dieker syndrome region or smaller deletions of only PAFAH1B1, white matter changes, and a distinct syndrome due to deletions including YWHAE and CRK but sparing PAFAH1B1. We sought to understand the significance of 17p13.3 deletions between the YWHAE/CRK and PAFAH1B1 loci. METHODS We analyzed the clinical features of six individuals from five families with 17p13.3 deletions between and not including YWHAE/CRK and PAFAH1B1 identified among individuals undergoing clinical chromosomal microarray testing or research genome sequencing. RESULTS Five individuals from four families had multifocal white matter lesions while a sixth had a normal magnetic resonance image. A combination of our individuals and a review of those in the literature with white matter changes and deletions in this chromosomal region narrows the overlapping region for this brain phenotype to ~345 kb, including 11 RefSeq genes, with RTN4RL1 haploinsufficiency as the best candidate for causing this phenotype. CONCLUSION While previous literature has hypothesized dysmorphic features and white matter changes related to YWHAE, our cohort contributes evidence to the presence of additional genetic changes within 17p13.3 required for proper brain development.

中文翻译:


排除 YWHAE 和 PAFAH1B1 的微缺失会导致独特的白质脑病:进一步描绘 17p13.3 微缺失谱。



目的 17p13.3 缺失引起的脑畸形包括无脑畸形(伴有较大 Miller-Dieker 综合征区域缺失或仅 PAFAH1B1 较小缺失)、白质变化以及由于缺失(包括 YWHAE 和 CRK 但保留 PAFAH1B1)而导致的独特综合征。我们试图了解 YWHAE/CRK 和 PAFAH1B1 位点之间 17p13.3 缺失的意义。方法 我们分析了来自 5 个家族的 6 名个体的临床特征,这些个体在接受临床染色体微阵列测试或研究基因组测序的个体中发现了 YWHAE/CRK 和 PAFAH1B1(不包括 YWHAE/CRK 和 PAFAH1B1)之间(且不包括)的 17p13.3 缺失。结果 来自四个家庭的五人患有多灶性白质病变,而第六人的磁共振图像正常。结合我们的个体和文献中对该染色体区域白质变化和缺失的回顾,将这种大脑表型的重叠区域缩小到约 345 kb,包括 11 个 RefSeq 基因,其中 RTN4RL1 单倍体不足是导致这一现象的最佳候选基因。这种表型。结论 虽然之前的文献假设与 YWHAE 相关的畸形特征和白质变化,但我们的队列提供了证据,证明 17p13.3 内存在大脑正常发育所需的额外遗传变化。
更新日期:2019-01-26
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