Genetic Variant TAS2R41:p.Pro192His (chr7-143478447-C-A) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_176883.2(TAS2R41):c.575C>A(p.Pro192His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

TAS2R41
NM_176883.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.41

Variant links:

Genes affected

TAS2R41 (HGNC:18883): (taste 2 receptor member 41) This gene encodes a member of the bitter taste receptor family which belong to the G protein-coupled receptor superfamily and are predominantly expressed in taste receptor cells of the tongue and palate epithelia. This intronless taste receptor gene encodes a seven-transmembrane receptor protein, functioning as a bitter taste receptor. This gene is clustered together with eight other taste receptor genes on chromosome 7. Chloramphenicol is an agonist for the encoded protein. [provided by RefSeq, Jul 2017]

TAS2R41 links:

EPHA1-AS1 (HGNC:27799): (EPHA1 antisense RNA 1)

EPHA1-AS1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.981

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TAS2R41	NM_176883.2 link	c.575C>A	p.Pro192His	missense_variant	Exon 1 of 1	ENST00000408916.1	NP_795364.2	P59536
EPHA1-AS1	NR_033897.1 link	n.207-26327C>A		intron_variant	Intron 2 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TAS2R41	ENST00000408916.1 link	c.575C>A	p.Pro192His	missense_variant	Exon 1 of 1	6	NM_176883.2	ENSP00000386201.1	P59536
EPHA1-AS1	ENST00000429289.5 link	n.207-26327C>A		intron_variant	Intron 2 of 4	1
EPHA1-AS1	ENST00000690912.1 link	n.228-17519C>A		intron_variant	Intron 2 of 2
EPHA1-AS1	ENST00000703017.1 link	n.206-17519C>A		intron_variant	Intron 2 of 2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

249300

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135254

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000117

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000468

Hom.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.575C>A (p.P192H) alteration is located in exon 1 (coding exon 1) of the TAS2R41 gene. This alteration results from a C to A substitution at nucleotide position 575, causing the proline (P) at amino acid position 192 to be replaced by a histidine (H). 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

Pathogenic

0.76

BayesDel_addAF

Pathogenic

0.25

BayesDel_noAF

Pathogenic

0.19

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Benign

0.72

M_CAP

Benign

0.031

MetaRNN

Pathogenic

0.98

MetaSVM

Uncertain

0.12

MutationAssessor

Pathogenic

3.8

PrimateAI

Benign

0.28

PROVEAN

Pathogenic

-8.9

REVEL

Uncertain

0.46

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.74

MutPred

0.91

Loss of stability (P = 0.1676);

MVP

0.80

MPC

0.37

ClinPred

0.93

GERP RS

6.0

Varity_R

0.94

gMVP

0.51

Splicing

Name

Calibrated prediction

Score

Prediction

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