DRC3

Chr 17

dynein regulatory complex subunit 3

Also known as: CFAP134, LRRC48

NCBI Gene: 83450ENSG00000171962UniProt: Q8TE68OMIM: 618758

DRC3 encodes a protein that stimulates guanine exchange activity of SOS1 and is involved in membrane ruffling and actin cytoskeleton remodeling, while also localizing to the axoneme structure of cilia. Mutations cause primary ciliary dyskinesia, which typically presents in infancy or early childhood with chronic respiratory infections, sinusitis, and bronchiectasis due to defective ciliary function. This condition follows autosomal recessive inheritance.

OMIMResearchSummary from RefSeq, UniProt
MultiplemechanismLOEUF 1.04
Clinical Summary— DRC3
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
117 unique Pathogenic / Likely Pathogenic· 89 VUS of 232 total submissions
Explore recent and relevant literature in Research Assistant →

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint
1.04LOEUF
pLI 0.000
Z-score 1.40
OE 0.69 (0.47–1.04)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
0.22Z-score
OE missense 0.96 (0.88–1.06)
304 obs / 315.1 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.69 (0.47–1.04)
0≤0.351.4
Missense OE0.96 (0.88–1.06)
0≤0.61.4
Synonymous OE0.96
0≤1.21.6
LoF obs/exp: 17 / 24.5Missense obs/exp: 304 / 315.1Syn Z: 0.33
DN
0.77top 25%
GOF
0.7126th %ile
LOF
0.2485th %ile

This gene has evidence for multiple mechanisms of pathogenicity (dominant-negative and gain-of-function). Both the Badonyi & Marsh prediction and the broader genomic evidence point to dominant-negative as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.

DNprediction above median
GOFprediction above median

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

232 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic116
Likely Pathogenic1
VUS89
Likely Benign9
116
Pathogenic
1
Likely Pathogenic
89
VUS
9
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
116
0
116
Likely Pathogenic
0
0
1
0
1
VUS
0
84
5
0
89
Likely Benign
0
6
2
1
9
Benign
0
0
0
0
0
Total0901241215

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

DRC3 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Open Research Assistant →
Full-Text Mentions
NLP-detected gene mentions in article bodies · via PubTator3
PubTator3
Top 5 full-text resultsSearch PubTator3 ↗
Key Publications
Landmark & review papers · by relevance
PubMed
Top 4 results · since 2015Search PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

External Resources

Links to major genomics databases and tools

Franklin by Genoox
AI-powered variant curation and clinical analysis
DECIPHER
Genomic variants and phenotypes in rare disease patients