OR5B2

Chr 11

olfactory receptor family 5 subfamily B member 2

Also known as: OR11-240, OST073

NCBI Gene: 390190 ENSG00000172365 UniProt: Q96R09

Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) arising from single coding-exon genes. Olfactory receptors share a 7-transmembrane domain structure with many neurotransmitter and hormone receptors and are responsible for the recognition and G protein-mediated transduction of odorant signals. The olfactory receptor gene family is the largest in the genome. [provided by RefSeq, Jul 2008]

Research

ResearchGenerating clinical summary…

Active trials

Pubs (1 yr)

—

P/LP submissions

—

P/LP missense

1.47

LOEUF

Multiple*

Mechanism· predicted

Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD

Tolerant — LoF & missense variants common in population

LoF Constraint?

1.47LOEUF

pLI 0.072

Z-score 0.96

OE 0.49 (0.20–1.47)

Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?

-0.63Z-score

OE missense 1.14 (1.01–1.29)

184 obs / 161.5 exp

Tolerant

Tolerant to missense variation

Observed / Expected Ratios?

LoF OE?0.49 (0.20–1.47)

0≤0.351.4

Missense OE?1.14 (1.01–1.29)

0≤0.61.4

Synonymous OE?1.11

0≤1.21.6

LoF obs/exp: 2 / 4.1Missense obs/exp: 184 / 161.5Syn Z: -0.69

Background carrier burden — how many people carry a rare variant somewhere in OR5B2?

gnomAD v4 · ~731k individuals · PASS only

Rare means allele frequency under

Rare missense

1 in 130

443 rare PASS variants

Rare truncating (LoF)

1 in 2,700

49 rare PASS variants

Rare synonymous (reference)

1 in 200

175 rare PASS variants

Truncating variants are far rarer here than missense — that gap, in human units, is what constraint means for OR5B2. A background rate for each class, not the frequency of any particular variant; thin-coverage exons undercount.

By genetic ancestry · 9 gnomAD groups · rare = under 0.1% in that group

Group	People	Missense	Truncating
European (non-Finnish)	~556k	1 in 160	1 in 2,600
South Asian	~43k	1 in 73	1 in 2,100
Remaining (unassigned)	~30k	1 in 79	1 in 2,500
European (Finnish)	~27k	1 in 640	≈ 1 in 27,000
Admixed American	~22k	1 in 120	1 in 1,600
African / African American	~21k	1 in 150	1 in 3,300
East Asian	~20k	1 in 100	≈ 1 in 4,000
Ashkenazi Jewish	~13k	1 in 380	none seen
Middle Eastern	~2,883	1 in 120	≈ 1 in 1,400

Each group is summed over the variants that are rare in that group. Grey ≈ figures rest on fewer than five expected carriers — too few to distinguish groups. Differences mostly reflect how many people were sampled and how much variation each ancestry carries, not disease risk.

Exome coverage (gnomAD): All 1 coding exons well covered in gnomAD exomes and genomes.? see exons ↓