Clinical Genetics
Analysis of genetic variant in a case of sporadic neurofibromatosis type Ⅰ with alopecia areata and vitiligo
Zhang Yuli, Wang Bin, Li Yexian, Li Yanjia, Zhang Guoqiang
Published 2021-11-10
Cite as Chin J Med Genet, 2021, 38(11): 1120-1122. DOI: 10.3760/cma.j.cn511374-20200730-00567
Abstract
ObjectiveTo explore the genetic basis for a patient with clinically suspected neurofibromatosis type Ⅰ, alopecia areata and vitiligo.
MethodsVariant of the NF1 gene was detected by chip capture and high-throughput sequencing. Candidate variant was verified by Sanger sequencing of the family trio.
ResultsThe patient was found to harbor a novel missense c. 1885G>A(p.Gly629Arg) variant of theNF1 gene, for which neither parent was carrier. The variant was not recorded in the public database. Based on the guidelines for genetic variation of the American College of Medical Genetics and Genomics, the c. 1885G>A missense variant was predicted to be pathogenic (PS1+ PS2+ PM2+ PP3+ PP4).
ConclusionThe c. 1885G>A missense variant probably underlay the disease in this child. Above finding has enriched the spectrum of theNF1 gene variants.
Key words:
Neurofibromatosis; Alopecia areata; Vitiligo; NF1 gene
Contributor Information
Zhang Yuli
Department of Dermatology, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, China
Wang Bin
Department of Dermatology, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, China
Li Yexian
Department of Dermatology, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, China
Li Yanjia
Department of Dermatology, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, China
Zhang Guoqiang
Department of Dermatology, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, China