OR13G1

Chr 1

olfactory receptor family 13 subfamily G member 1

Also known as: OR1-37

NCBI Gene: 441933ENSG00000197437UniProt: Q8NGZ3OMIM: 611677

OR13G1 encodes an olfactory receptor that detects odorant molecules in the nose and initiates G protein-mediated signal transduction to trigger smell perception. This gene is not currently associated with any known Mendelian diseases or clinical phenotypes. The gene shows low constraint to loss-of-function variation, which is typical for olfactory receptor genes that exist in large, functionally redundant families.

OMIMResearchSummary from RefSeq, UniProt
MultiplemechanismLOEUF 1.73
Clinical Summary— OR13G1
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.15) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
70 unique Pathogenic / Likely Pathogenic· 62 VUS of 140 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
1.73LOEUF
pLI 0.150
Z-score 0.68
OE 0.49 (0.16–1.73)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
0.34Z-score
OE missense 0.93 (0.81–1.06)
161 obs / 173.7 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.49 (0.16–1.73)
0≤0.351.4
Missense OE0.93 (0.81–1.06)
0≤0.61.4
Synonymous OE1.07
0≤1.21.6
LoF obs/exp: 1 / 2.1Missense obs/exp: 161 / 173.7Syn Z: -0.46
DN
0.86top 5%
GOF
0.83top 10%
LOF
0.1499th %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

140 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic64
Likely Pathogenic6
VUS62
Likely Benign3
Benign5
64
Pathogenic
6
Likely Pathogenic
62
VUS
3
Likely Benign
5
Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
64
0
64
Likely Pathogenic
0
0
6
0
6
VUS
0
41
21
0
62
Likely Benign
0
2
1
0
3
Benign
0
0
4
1
5
Total043961140

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

View in ClinVar →

Protein Context — Lollipop Plot

OR13G1 · 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 ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC

No open access results found

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