MC5R
Chr 18melanocortin 5 receptor
Also known as: MC2
The MC5R protein is a G protein-coupled receptor that binds melanocyte-stimulating hormones and ACTH, stimulating cAMP signaling pathways and playing essential roles in immune response, temperature regulation, and exocrine gland function. Mutations in MC5R have not been definitively associated with human disease, though the protein's functions suggest potential involvement in thermoregulatory, immune, or glandular disorders. The gene shows very low constraint against loss-of-function variants, indicating that complete loss of MC5R function may be well-tolerated in humans.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly tolerant — LoF variants common in population
Mild missense constraint
This gene has evidence for multiple mechanisms of pathogenicity (gain-of-function and dominant-negative). Both the Badonyi & Marsh prediction and the broader genomic evidence point to gain-of-function as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.
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
147 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 | 0 | 80 | 0 | 80 |
Likely Pathogenic | 0 | 0 | 1 | 0 | 1 |
VUS | 0 | 51 | 9 | 0 | 60 |
Likely Benign | 0 | 4 | 0 | 0 | 4 |
Benign | 0 | 0 | 0 | 1 | 1 |
| Total | 0 | 55 | 90 | 1 | 146 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
MC5R · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
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 →External Resources
Links to major genomics databases and tools