chr7-141764598-C-A

Position:

• chr7-141764598-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_016943.2(TAS2R3):​c.440C>A​(p.Ser147Tyr) 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 pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TAS2R3 NM_016943.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.13

Genes affected

TAS2R3 (HGNC:14910): (taste 2 receptor member 3) This gene encodes a member of a family of candidate taste receptors that are members of the G protein-coupled receptor superfamily and that are specifically expressed by taste receptor cells of the tongue and palate epithelia. These apparently intronless taste receptor genes encode a 7-transmembrane receptor protein, functioning as a bitter taste receptor. This gene is clustered with another 3 candidate taste receptor genes in chromosome 7 and is genetically linked to loci that influence bitter perception. [provided by RefSeq, Jul 2008]

SSBP1 (HGNC:11317): (single stranded DNA binding protein 1) SSBP1 is a housekeeping gene involved in mitochondrial biogenesis (Tiranti et al., 1995 [PubMed 7789991]). It is also a subunit of a single-stranded DNA (ssDNA)-binding complex involved in the maintenance of genome stability (Huang et al., 2009) [PubMed 19683501].[supplied by OMIM, Feb 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.876

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TAS2R3	NM_016943.2	c.440C>A	p.Ser147Tyr	missense_variant	1/1	ENST00000247879.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TAS2R3	ENST00000247879.2	c.440C>A	p.Ser147Tyr	missense_variant	1/1		NM_016943.2	P1
SSBP1	ENST00000465582.5	c.*30+14214C>A		intron_variant		5		P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 69

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

Dec 09, 2023

The c.440C>A (p.S147Y) alteration is located in exon 1 (coding exon 1) of the TAS2R3 gene. This alteration results from a C to A substitution at nucleotide position 440, causing the serine (S) at amino acid position 147 to be replaced by a tyrosine (Y). 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	0.17
BayesDel_addAF	Benign	0.0076	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.015	T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.79	T
M_CAP	Benign	0.025	T
MetaRNN	Pathogenic	0.88	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.8	M
MutationTaster	Benign	1.0	D;N
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-3.3	D
REVEL	Benign	0.23
Sift	Uncertain	0.011	D
Sift4G	Uncertain	0.016	D
Polyphen		1.0	D
Vest4		0.55
MutPred		0.75		Gain of helix (P = 0.2059);
MVP		0.53
MPC		0.15
ClinPred		0.97	D
GERP RS		6.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.27
gMVP		0.14

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: chr7-141464398;