TAS2R42

protein-coding

taste 2 receptor member 42, the group of Taste 2 receptors

Gene summary

Predicted to enable G protein-coupled receptor activity and bitter taste receptor activity. Predicted to be involved in G protein-coupled receptor signaling pathway and detection of chemical stimulus involved in sensory perception of bitter taste. Located in membrane. [provided by Alliance of Genome Resources, Jul 2025]

MANE transcript

NM_181429.2

Inheritance

—

ClinVar variants

U:34B:3

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e —

Max pathogenic AF

—

Genomic locus

chr12:11,185,993-11,186,937

External References & Databases

Ensembl (ENSG00000186136)

Transcript & Mutation Effects

hg38 • Region Span ~0.9 kb

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GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

No GenCC data available for this gene.

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to TAS2R42 variants in ClinVar

2 Conditions Cataloged

not specifiedTotal: 36

not providedTotal: 1

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_181429.2. Only rare variants are included.

We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.

Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.

Effect	PathogenicP	Likely pathogenicLP	VUS	Likely benignLB	BenignB	Sum
synonymous						0
missense			34 clinvar	3 clinvar		37
nonsense						0
start loss						0
frameshift						0
splice donor/acceptor (+/-2bp)						0
Total	0	0	34	3	0	37

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Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 2 of 2 transcripts

Transcript ID	Source	Protein ID	Coding Exons	MANE Status
NM_181429.2	RefSeq	NP_852094.2	1	MANE Select
ENST00000334266.1	Ensembl	ENSP00000334050.1	1	MANE Select

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Pathways ConsensusPathDB

Taste transduction - Homo sapiens (human)
Signaling by GPCR
Signal Transduction
Class C/3 (Metabotropic glutamate/pheromone receptors)
GPCR ligand binding

Biological Process

detection of chemical stimulus involved in sensory perception of bitter taste
G protein-coupled receptor signaling pathway

Molecular Function

G protein-coupled receptor activity
bitter taste receptor activity

Cellular Component

plasma membrane
integral component of membrane

gnomAD Constraint

Source: gnomAD

Gene type: protein_coding
Transcript type: protein_coding
Transcript: ENST00000334266
Coding exons: 1
Length: 945

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible
Missense	0.0204	154	155	0.995	0.00000682	2067
Missense (PolyPhen)		42	36.817	1.1408		552
Synonymous	-0.280	64	61.2	1.05	0.00000293	620
Loss of Function

Population LoF Frequency

Population	CAF	p-value	Status
African	0	0.0	absent
Latino/Admixed American	0	0.0	absent
Ashkenazi Jewish	0	0.0	absent
East Asian	0	0.0	absent
Finnish	0	0.0	absent
European (Non-Finnish)	0	0.0	absent
South Asian	0	0.0	absent
Other	0	0.0	absent

dbNSFP Gene Annotations

Source: dbNSFP

Function: FUNCTION: Receptor that may play a role in the perception of bitterness and is gustducin-linked. May play a role in sensing the chemical composition of the gastrointestinal content. The activity of this receptor may stimulate alpha gustducin, mediate PLC-beta-2 activation and lead to the gating of TRPM5 (By similarity). {ECO:0000250}.;

Intolerance Scores

LoFtool: 0.868
RVIS EVS: 1.06
RVIS percentile EVS: 91.51

Essentials

Essential (CRISPR): N
Essential (CRISPR2): N
Essential (gene trap): N
Indispensability pred.: N
Indispensability score: 0.118

Gene Damage Prediction

	All	Recessive	Dominant
Mendelian	Medium	Medium	Medium
Primary Immunodeficiency	Medium	Medium	High
Cancer	Medium	Medium	Medium