1-6571214-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_138697.4(TAS1R1):c.497T>A(p.Met166Lys) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000142 in 1,405,724 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TAS1R1
NM_138697.4 missense, splice_region

Scores

Splicing: ADA: 0.001753

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.52

Variant links:

Genes affected

TAS1R1 (HGNC:14448): (taste 1 receptor member 1) The protein encoded by this gene is a G protein-coupled receptor and is a component of the heterodimeric amino acid taste receptor T1R1+3. The T1R1+3 receptor responds to L-amino acids but not to D-enantiomers or other compounds. Most amino acids that are perceived as sweet activate T1R1+3, and this activation is strictly dependent on an intact T1R1+3 heterodimer. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

TAS1R1 links:

LOC107984912 (HGNC:):

LOC107984912 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.37898594).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TAS1R1	NM_138697.4 linkuse as main transcript	c.497T>A	p.Met166Lys	missense_variant, splice_region_variant	2/6	ENST00000333172.11
LOC107984912	XR_002958250.1 linkuse as main transcript	n.88-1231A>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TAS1R1	ENST00000333172.11 linkuse as main transcript	c.497T>A	p.Met166Lys	missense_variant, splice_region_variant	2/6	1	NM_138697.4	P1	Q7RTX1-1
TAS1R1	ENST00000415267.1 linkuse as main transcript	c.275T>A	p.Met92Lys	missense_variant, splice_region_variant	1/4	1
TAS1R1	ENST00000351136.7 linkuse as main transcript	c.497T>A	p.Met166Lys	missense_variant, splice_region_variant	2/5	2			Q7RTX1-2
TAS1R1	ENST00000411823.5 linkuse as main transcript	c.275T>A	p.Met92Lys	missense_variant, splice_region_variant	1/3	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000491

AC:

AN:

203484

Hom.:

AF XY:

0.00

AC XY:

AN XY:

107768

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000359

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000142

AC:

AN:

1405724

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

693052

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000262

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.22e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 10, 2022

The c.497T>A (p.M166K) alteration is located in exon 2 (coding exon 2) of the TAS1R1 gene. This alteration results from a T to A substitution at nucleotide position 497, causing the methionine (M) at amino acid position 166 to be replaced by a lysine (K). 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

Uncertain

0.55

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.040

Cadd

Benign

Dann

Benign

0.91

DEOGEN2

Benign

0.23

T;.

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Benign

0.47

LIST_S2

Benign

0.55

T;T

M_CAP

Benign

0.055

MetaRNN

Benign

0.36

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

L;L

MutationTaster

Benign

0.99

N;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-1.6

N;N

REVEL

Uncertain

0.55

Sift

Benign

0.034

D;T

Sift4G

Uncertain

0.040

D;T

Polyphen

0.0020

B;B

Vest4

0.48

MutPred

0.76

Gain of ubiquitination at M166 (P = 0.0198);Gain of ubiquitination at M166 (P = 0.0198);

MVP

0.54

MPC

0.26

ClinPred

0.35

GERP RS

3.8

Varity_R

0.73

gMVP

0.63

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0018

dbscSNV1_RF

Benign

0.078

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over