Hereditary neuropathy or pain disorder
Gene: TRPV4
Multiple C5s in Bristol with specific phenotype including vocal cord involvement. Also well established from looking at HGMD. PubMed: 20037586 - Trpv4-knockout mice show sensorineural hearing loss and impairment of bladder voiding, suggesting that some clinical manifestations of HMSN2C may be due to loss of TRPV4 function as well as toxic gain of function. One reportedly HOMOZYGOUS loss-of-function variant in dHMN (https://www.biorxiv.org/content/10.1101/402388v2)Created: 29 Apr 2019, 12:30 p.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes
other disorders; Hereditary motor and sensory neuropathy, type IIc, 606071
Publications
Variants in this GENE are reported as part of current diagnostic practice
Variants in this GENE are reported as part of current diagnostic practice
Rating and review submitted on behalf of James Polke (Neurogenetics Laboratory,Institute of Neurology, London), on behalf of London North GLH for GMS Neurology specialist test group.Created: 9 May 2019, 5 p.m.
Review and rating submitted by Natalie Forrester (SWGLH - Bristol Genetics) on behalf of South West GLH for GMS Neurology specialist test group.Created: 29 Apr 2019, 12:53 p.m.
Comment on publications: corrected formatingCreated: 30 Nov 2017, 10:51 a.m.
Variants in this GENE are reported as part of current diagnostic practice
This gene is in the Charcot Marie Tooth Disease section in the UCLH National Hospital for Neurology and Neurosurgery & Institute of Neurology (NHNN) Neurogenetics genetic testing manual, for testing of dHMN.Created: 10 Jun 2016, 1:50 p.m.
Is on the Charcot-Marie- Tooth disease type 2 / Intermediate CMT NGS Panel in the UCLH National Hospital for Neurology and Neurosurgery & Institute of Neurology (NHNN) Neurogenetics genetic testing manual.Created: 10 Jun 2016, 1:10 p.m.
Comment on mode of pathogenicity: Missense variants are relevant, and these will be reported in tier 2.Created: 10 May 2016, 11:29 a.m.
Comment on list classification: Multiple reviewers agreeing this should be green, and diagnostically tested for.Created: 10 May 2016, 11:24 a.m.
null mutations have been shown to be benign polymorphismsCreated: 9 Dec 2015, 8:48 a.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mode of pathogenicity
Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype -please provide details in the comments
Variants in this GENE are reported as part of current diagnostic practice
null mutations have been shown to be benign polymorphismsCreated: 8 Dec 2015, 3:05 p.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mode of pathogenicity
Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype -please provide details in the comments
Variants in this GENE are reported as part of current diagnostic practice
gene: TRPV4 was added gene: TRPV4 was added to Hereditary neuropathy NOT PMP22 copy number. Sources: NHS GMS,Illumina TruGenome Clinical Sequencing Services,London North GLH,Expert list,Emory Genetics Laboratory,UKGTN,Expert Review Green,South West GLH,Radboud University Medical Center, Nijmegen Mode of inheritance for gene: TRPV4 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for gene: TRPV4 were set to 20037586 Phenotypes for gene: TRPV4 were set to Hereditary motor and sensory neuropathy, type IIc, 606071 Mode of pathogenicity for gene: TRPV4 was set to Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments