Loss-of-function mutations in the Nav1.7 gene underlie congenital indifference to pain in multiple human populations

Title

Loss-of-function mutations in the Nav1.7 gene underlie congenital indifference to pain in multiple human populations

Creator

Goldberg YP; MacFarlane J; MacDonald ML; Thompson J; Dube MP; Mattice M; Fraser R; Young C; Hossain S; Pape T; Payne B; Radomski C; Donaldson G; Ives E; Cox J; Younghusband HB; Green R; Duff A; Boltshauser E; Grinspan GA; Dimon JH; Sibley BG; Andria G; Toscano E; Kerdraon J; Bowsher D; Pimstone SN; Samuels ME; Sherrington R; Hayden MR

Publisher

Clinical Genetics

Date

2007

Subject

Female; Humans; Male; Mutation; DNA Mutational Analysis; Pedigree; Chromosomes; Human; Genetics; Population; Chromosome Mapping; Haplotypes; Pair 2/genetics; Codon; Congenital/genetics; Founder Effect; Frameshift Mutation; Nonsense; Pain Insensitivity; Sequence Deletion; Sodium Channels/genetics

Description

Congenital indifference to pain (CIP) is a rare condition in which patients have severely impaired pain perception, but are otherwise essentially normal. We identified and collected DNA from individuals from nine families of seven different nationalities in which the affected individuals meet the diagnostic criteria for CIP. Using homozygosity mapping and haplotype sharing methods, we narrowed the CIP locus to chromosome 2q24-q31, a region known to contain a cluster of voltage-gated sodium channel genes. From these prioritized candidate sodium channels, we identified 10 mutations in the SCN9A gene encoding the sodium channel protein Nav1.7. The mutations completely co-segregated with the disease phenotype, and nine of these SCN9A mutations resulted in truncation and loss-of-function of the Nav1.7 channel. These genetic data further support the evidence that Nav1.7 plays an essential role in mediating pain in humans, and that SCN9A mutations identified in multiple different populations underlie CIP.
2007

Rights

Article information provided for research and reference use only. PedPalASCNET does not hold any rights over the resource listed here. All rights are retained by the journal listed under publisher and/or the creator(s).

Type

Journal Article

Citation List Month

Backlog

Pages

311-319

Issue

4

Volume

71

Citation

Goldberg YP; MacFarlane J; MacDonald ML; Thompson J; Dube MP; Mattice M; Fraser R; Young C; Hossain S; Pape T; Payne B; Radomski C; Donaldson G; Ives E; Cox J; Younghusband HB; Green R; Duff A; Boltshauser E; Grinspan GA; Dimon JH; Sibley BG; Andria G; Toscano E; Kerdraon J; Bowsher D; Pimstone SN; Samuels ME; Sherrington R; Hayden MR, “Loss-of-function mutations in the Nav1.7 gene underlie congenital indifference to pain in multiple human populations,” Pediatric Palliative Care Library, accessed October 26, 2021, https://pedpalascnetlibrary.omeka.net/items/show/14166.

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