Identification of novel variations in the NTRK1 gene causing congenital insensitivity to pain with anhidrosis

Autor: Shang Li, Hua‐ying Hu, Jun‐Jun Xu, Zhan‐ke Feng, Yong‐qing Sun, Xu Chen, Kai Yang, Ya‐zhou Li, Dong‐liang Zhang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Molecular Genetics & Genomic Medicine, Vol 9, Iss 11, Pp n/a-n/a (2021)
Druh dokumentu: article
ISSN: 2324-9269
DOI: 10.1002/mgg3.1839
Popis: Abstract Background Congenital insensitivity to pain (CIP) conditions are a group of Mendelian disorders with clinical and genetic heterogeneity. CIP with anhidrosis (CIPA) is a distinct subtype caused by biallelic variants in the NTRK1 gene. Methods In this study, six families with CIPA were recruited and submitted to a series of clinical and genetic examinations. Whole‐exome sequencing and whole‐genome sequencing were applied to perform a comprehensive genetic analysis. Sanger sequencing was used as a validation method. Results These patients exhibited phenotypic variability. All probands in the six families were positive for biallelic pathogenic variants in NTRK1. Five individual variants, namely NTRK1: (NM_002529.3) c.851‐33T>A, c.717+2T>C, c.1806‐2A>G, c.1251+1G>A, and c.851‐794C>G, including three novel ones, were identified, which were carried by the six patients in a homozygous or compound heterozygous way. The validation results indicated that all the parents of the six probands, except for one father and one mother, were monoallelic carriers of a single variant. Conclusions The findings in our study extended the variation spectrum of the NTRK1 gene and highlighted the advantage of the integrated application of multiplatform genetic technologies.
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