USH1C (Harmonin) variants and mutations

USH1C (also known as Harmonin) is a human protein-coding gene encoding a harmonin protein. It organizes protein complexes in inner-ear hair-cell stereocilia and photoreceptor structures. Biallelic pathogenic variants cause Usher syndrome type 1C with congenital severe hearing loss and progressive retinitis pigmentosa, or in some alleles isolated deafness. This analysis covers 937 USH1C variants and mutations. Of these, 61% have computational variant effect predictions. Disease context includes Usher syndrome type 1C, autosomal recessive nonsyndromic hearing loss 18A, and Usher syndrome. Example USH1C variants include M1V, D2E, and R3*.

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, ClinGen, MaveDB, LitVar.

Notable USH1C variants

Examples include M1V, D2E, R3*, R3G, R3Q, R3X, K4N, K4T. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.