Next generation sequencing identified a novel multi exon deletion of the NF1 gene in a Chinese pedigree with neurofibromatosis type 1

Balkan journal of medical genetics: BJMG

J Yang^1¹  J-X An^1² 

[1] Gansu Provincial Maternity and Child-Care Hospital, LanZhou, Gansu Province, People’s Republic of China, Wuwei City, China^1;The third people’s hospital of Liangzhou District, Wuwei City, Gansu Province, People’s Republic of China, Wuwei City, China^2

关键词: Café-au-lai-spots;    Multi-exon deletion;    Novel mutation;    Neurofibromas;    Neurofibromatosis type 1 (NF1);    Next generation sequencing (NGS);   

DOI  :  10.2478/bjmg-2018-0019

学科分类：生物科学（综合）

来源: Makedonska Akademija na Naukite i Umetnostite

【 摘 要 】

Neurofibromatosis type 1 (NF1) is a genetic disease involving neurocutaneous abnormalities. Neurofibromatosis type 1 is an autosomal dominant disorder characterized by the neurofibromas and café-au-lait spots. Mutation in the NF 1 gene causes NF1. The NF 1 gene encodes neurofibromin. In this study, we found a 31-year-old Chinese boy with NF1. He presented only with café-au-lait spots over the whole body. The proband’s mother had a severe phenotype with neurofibroma and café-au-lait macules over her whole body, mostly in the facial region. A novel multi exon deletion c.(4661+1_4662-1)_(5748+1_5749-1)del; [EX36_39DEL] on the NF 1 gene has been identified in the proband. Quantitative real-time polymerase chain reaction (qPCR) confirmed that this mutation is co-segregated well and was inherited from the proband’s mother. The mutation was absent in the proband’s father and normal individuals. The novel multi exon deletion results in the formation of a truncated NF1 protein that caused the NF1 phenotype in this family. Our present study also emphasized the significance of rapid, accurate and cost-effective screening for the patient with NF1 by next generation sequencing (NGS).

【 授权许可】

Unknown