7-141791239-C-T

Position:

• chr7-141791239-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_018980.3(TAS2R5):​c.878C>T​(p.Ala293Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TAS2R5 NM_018980.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.206

Genes affected

TAS2R5 (HGNC:14912): (taste 2 receptor member 5) This gene encodes a bitter taste receptor; bitter taste receptors are members of the G protein-coupled receptor superfamily and are specifically expressed by taste receptor cells of the tongue and palate epithelia. Each of these apparently intronless taste receptor genes encodes a 7-transmembrane receptor protein, functioning as a bitter taste receptor. This gene is clustered with another 3 candidate taste receptor genes on chromosome 7 and is genetically linked to loci that influence bitter perception. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07153663).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TAS2R5	NM_018980.3	c.878C>T	p.Ala293Val	missense_variant	1/1	ENST00000247883.5	NP_061853.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TAS2R5	ENST00000247883.5	c.878C>T	p.Ala293Val	missense_variant	1/1		NM_018980.3	ENSP00000247883	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 08, 2024

The c.878C>T (p.A293V) alteration is located in exon 1 (coding exon 1) of the TAS2R5 gene. This alteration results from a C to T substitution at nucleotide position 878, causing the alanine (A) at amino acid position 293 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	5.7
DANN	Benign	0.96
DEOGEN2	Benign	0.0019	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.0075	N
LIST_S2	Benign	0.48	T
M_CAP	Benign	0.0024	T
MetaRNN	Benign	0.072	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-0.13	N
REVEL	Benign	0.023
Sift	Benign	0.097	T
Sift4G	Pathogenic	0.0	D
Polyphen		0.010	B
Vest4		0.34
MutPred		0.45		Loss of disorder (P = 0.1161);
MVP		0.12
MPC		0.097
ClinPred		0.059	T
GERP RS		-1.3
Varity_R		0.031
gMVP		0.019

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-141491039; COSMIC: COSV56094757; COSMIC: COSV56094757;