FIG4

FIG4 phosphoinositide 5-phosphatase

Gene Function

Dual specificity phosphatase component of the PI(3,5)P2 regulatory complex which regulates both the synthesis and turnover of phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2). Catalyzes the dephosphorylation of phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2) to form phosphatidylinositol 3-phosphate. Has serine-protein phosphatase activity acting on PIKfyve to stimulate its lipid kinase activity, its catalytically activity being required for maximal PI(3,5)P2 production. In vitro, hydrolyzes all three D5-phosphorylated polyphosphoinositide and although displaying preferences for PtdIns(3,5)P2, it is capable of hydrolyzing PtdIns(3,4,5)P3 and PtdIns(4,5)P2, at least in vitro Source: UniProt

Relationship to CMT

CMT4 AR
1 subtype
6q21
First described 2007

Subtype Inheritance Class OMIM Sentinel Publication
SubtypeCMT4J Inheritanceautosomal recessive ClassCMT4 OMIM611228 Sentinel Publication

2007 · 10.1038/nature05876

Stored Identifiers

HGNC Aliases: KIAA0274
hgnc_idHGNC:16873
ensembl_gene_idENSG00000112367
coords_grch38chr6:109690609-109878098
coords_grch37chr6:110012499-110146631
entrez_id9896
omim_gene609390
uniprot_idsQ92562
refseq_accessionNM_014845
mane_refseqNM_014845.6
mane_ensemblENST00000230124.8

ClinVar Variants

Pathogenic and likely pathogenic variants in FIG4, 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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