Pronounced maternal parent-of-origin bias for type-1 NF1 microdeletions
Pronounced maternal parent-of-origin bias for type-1 NF1 microdeletions
复制标题
1 型 NF1 微缺失存在明显的母系亲本偏差
DOI:
10.1007/s00439-018-1888-x
复制
发表时间:
2018
期刊:
影响因子:
5.3
通讯作者:
Kehrer-Sawatzki H
中科院分区:
文献类型:
--
作者:
Neuhäusler L;Summerer A;Cooper DN;Mautner VF;Kehrer-Sawatzki H
Neurofibromatosis type 1 (NF1) is caused, in 4.7–11% of cases, by large deletions encompassing theNF1gene and its flanking regions within 17q11.2. Different types of largeNF1deletion occur which are distinguishable by their breakpoint location and underlying mutational mechanism. Most common are the type-1NF1deletions of 1.4 Mb which exhibit recurrent breakpoints caused by nonallelic homologous recombination (NAHR), also termed unequal crossover. Here, we analyzed 37 unrelated families of patients with de novo type-1NF1deletions by means of short tandem repeat (STR) profiling to determine the parental origin of the deletions. We observed that 33 of the 37 type-1 deletions were of maternal origin (89.2% of cases;p< 0.0001). Analysis of the patients’ siblings indicated that, in 14 informative cases, ten (71.4%) deletions resulted from interchromosomal unequal crossover during meiosis I. Our findings indicate a strong maternal parent-of-origin bias for type-1NF1deletions. A similarly pronounced maternal transmission bias has been reported for recurrent copy number variants (CNVs) within 16p11.2 associated with autism, but not so far for any other NAHR-mediated pathogenic CNVs. Region-specific genomic features are likely to be responsible for the maternal bias in the origin of both the 16p11.2 CNVs and type-1NF1deletions.
登录
查看更多内容
DOI:
10.1016/j.tig.2015.05.010
发表时间:
2015-10
期刊:
Trends in genetics : TIG
影响因子:
--
作者:
Weckselblatt B;Rudd MK
通讯作者:
Rudd MK
影响因子:
3.9
作者:
Hillmer, Morten;Summerer, Anna;Kehrer-Sawatzki, Hildegard
通讯作者:
Kehrer-Sawatzki, Hildegard
影响因子:
3.5
作者:
Zhe Sun;Pengfei Liu;Xueyuan Jia;Marjorie A. Withers;L. Jin;J. Lupski;Feng Zhang
通讯作者:
Zhe Sun;Pengfei Liu;Xueyuan Jia;Marjorie A. Withers;L. Jin;J. Lupski;Feng Zhang
影响因子:
9.8
作者:
Katharina Steinmann;D. Cooper;L. Kluwe;N. Chuzhanova;C. Senger;E. Serra;C. Lázaro;M. Gilaberte;K. Wimmer;V. Mautner;H. Kehrer
通讯作者:
H. Kehrer
影响因子:
9.8
作者:
F. Greenberg;Guzzetta;R. MontesdeOca-Luna;Magenis Re;Smith Ac;Richter Sf;I. Kondo;W. Dobyns;P. Patel;Lupski
通讯作者:
F. Greenberg;Guzzetta;R. MontesdeOca-Luna;Magenis Re;Smith Ac;Richter Sf;I. Kondo;W. Dobyns;P. Patel;Lupski