CLRN2
Chr 4ARclarin 2
Also known as: DFNB117
CLRN2 encodes clarin-2, a four-transmembrane domain protein required for normal organization and maintenance of stereocilia bundles and mechano-electrical transduction in the inner ear. Mutations cause autosomal recessive hearing loss. The gene is not highly constrained against loss-of-function variants, consistent with its recessive inheritance pattern.
Moderate evidence — consider for supplementary testing
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly tolerant — LoF variants common in population
Mild missense constraint
The highest-scoring mechanism for this gene is gain-of-function.
Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.
Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.
ClinVar Variant Classifications
97 submitted variants in ClinVar
Classification Summary
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | 0 | 1 | 41 | 0 | 42 |
Likely Pathogenic | 0 | 0 | 1 | 0 | 1 |
VUS | 0 | 37 | 9 | 0 | 46 |
Likely Benign | 0 | 4 | 2 | 0 | 6 |
Benign | 0 | 1 | 0 | 0 | 1 |
| Total | 0 | 43 | 53 | 0 | 96 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
CLRN2 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
3D Protein StructureAlphaFold
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →No open access results found
External Resources
Links to major genomics databases and tools