PIEZO2 (Q9H5I5) variants and mutations

PIEZO2 (also known as Q9H5I5) is a human protein-coding gene encoding a piezo-type mechanosensitive ion channel component 2 protein. It converts mechanical force into electrical signals by opening a cation channel, enabling light-touch sensation and awareness of body position and movement. Activating variants can cause distal arthrogryposis syndromes with congenital joint contractures, while biallelic loss of function impairs proprioception and discriminative touch. This analysis covers 2,879 PIEZO2 variants and mutations. Of these, 96% have computational variant effect predictions. Disease context includes arthrogryposis- oculomotor limitation-electroretinal anomalies syndrome, Gordon syndrome, and distal arthrogryposis. Example PIEZO2 variants include M1T, A2V, and S3L.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, MaveDB, LitVar.

Notable PIEZO2 variants

Examples include M1T, A2V, S3L, E4*, E4D, E4K, V5A, V6L. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.