TRPV4

transient receptor potential cation channel subfamily V member 4

Gene Function

Non-selective calcium permeant cation channel involved in osmotic sensitivity and mechanosensitivity. Activation by exposure to hypotonicity within the physiological range exhibits an outward rectification. Also activated by heat, low pH, citrate and phorbol esters. Increase of intracellular Ca(2+) potentiates currents. Channel activity seems to be regulated by a calmodulin-dependent mechanism with a negative feedback mechanism. Promotes cell-cell junction formation in skin keratinocytes and plays an important role in the formation and/or maintenance of functional intercellular barriers (By similarity). Acts as a regulator of intracellular Ca(2+) in synoviocytes. Plays an obligatory role as a molecular component in the nonselective cation channel activation induced by 4-alpha-phorbol 12,13-didecanoate and hypotonic stimulation in synoviocytes and also regulates production of IL-8. Together with PKD2, forms mechano- and thermosensitive channels in cilium. Negatively regulates expression of PPARGC1A, UCP1, oxidative metabolism and respiration in adipocytes (By similarity). Regulates expression of chemokines and cytokines related to pro-inflammatory pathway in adipocytes (By similarity). Together with AQP5, controls regulatory volume decrease in salivary epithelial cells (By similarity). Required for normal development and maintenance of bone and cartilage. In its inactive state, may sequester DDX3X at the plasma membrane. When activated, the interaction between both proteins is affected and DDX3X relocalizes to the nucleus. In neurons of the central nervous system, could play a role in triggering voluntary water intake in response to increased sodium concentration in body fluid (By similarity) Source: UniProt

Relationship to CMT

CMT2dHMN/HMN AD, AR
2 subtypes
12q24.11
First described 2010

Subtype Inheritance Class OMIM Sentinel Publication
SubtypeCMT2C Inheritanceautosomal dominant or autosomal recessive ClassCMT2 OMIM606071 Sentinel Publication

2010 · 10.1038/ng.512
SubtypedHMN-8 Inheritanceautosomal dominant ClassdHMN/HMN OMIM600175 Sentinel Publication

2010 · 10.1038/ng.508

Stored Identifiers

HGNC Aliases: OTRPC4, TRP12
hgnc_idHGNC:18083
ensembl_gene_idENSG00000111199
coords_grch38chr12:109783087-109833542
coords_grch37chr12:110220890-110271212
entrez_id59341
omim_gene605427
uniprot_idsQ9HBA0
refseq_accessionNM_021625
mane_refseqNM_021625.5
mane_ensemblENST00000261740.7

ClinVar Variants

Pathogenic and likely pathogenic variants in TRPV4, as classified in ClinVar, are read live from NCBI. Only aggregate germline records are shown. Uncertain and conflicting classifications are not. Experts in CMT makes no claim to the accuracy of ClinVar data. This index is provided for informational purposes only.

Review stars are ClinVar’s measure of how well a classification is supported: four for a practice guideline, three for an expert panel review, two for agreement among multiple submitters, one for a single submitter with criteria provided, and none where no criteria were provided.

Reported in CMT
Reported in Other Diseases

Reported in a disease other than CMT. Listed apart rather than counted as CMT variants.

Variants w/o a Recorded Disease

Pathogenic or likely pathogenic in ClinVar, submitted without a disease recorded.

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