GRK6
Chr 5G protein-coupled receptor kinase 6
Also known as: GPRK6
The protein phosphorylates activated G protein-coupled receptors to initiate their desensitization and internalization, with particular involvement in dopamine receptor regulation in the striatum and chemokine receptor signaling. Mutations cause autosomal recessive dystonia-26 with early childhood onset, characterized by progressive movement disorders affecting the limbs and sometimes involving additional neurological features. The gene is highly constrained against loss-of-function variants, indicating that complete loss of protein function is poorly tolerated.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
More LoF-intolerant than ~75% of genes
Moderately missense-constrained (top ~2.5%)
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
141 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 | 50 | 0 | 50 |
Likely Pathogenic | 0 | 0 | 5 | 0 | 5 |
VUS | 0 | 54 | 11 | 0 | 65 |
Likely Benign | 0 | 3 | 1 | 1 | 5 |
Benign | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 57 | 67 | 1 | 125 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
GRK6 · 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