NM_023918.3:c.917C>T

Variant names:

• chr12-10806064-G-A
• NM_023918.3:c.917C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_023918.3(TAS2R8):​c.917C>T​(p.Ala306Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000695 in 1,438,078 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: TAS2R8 NM_023918.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.249
• Publications: 0 publications found

Genes affected

TAS2R8 (HGNC:14915): (taste 2 receptor member 8) This gene product belongs to the family of candidate taste receptors that are members of the G-protein-coupled receptor superfamily. These proteins are specifically expressed in the taste receptor cells of the tongue and palate epithelia. They are organized in the genome in clusters and are genetically linked to loci that influence bitter perception in mice and humans. In functional expression studies, they respond to bitter tastants. This gene maps to the taste receptor gene cluster on chromosome 12p13. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06742802).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023918.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAS2R8	NM_023918.3	MANE Select	c.917C>T	p.Ala306Val	missense	Exon 1 of 1	NP_076407.1	Q9NYW2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAS2R8	ENST00000240615.3	TSL:6 MANE Select	c.917C>T	p.Ala306Val	missense	Exon 1 of 1	ENSP00000240615.2	Q9NYW2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.95e-7 AC: 1 AN: 1438078 Hom.: 0 Cov.: 39 AF XY: 0.00000140 AC XY: 1 AN XY: 714004

African (AFR) AF: 0.00 AC: 0 AN: 32094

American (AMR) AF: 0.00 AC: 0 AN: 39596

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25084

East Asian (EAS) AF: 0.00 AC: 0 AN: 39490

South Asian (SAS) AF: 0.00 AC: 0 AN: 81296

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52876

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4722

European-Non Finnish (NFE) AF: 9.06e-7 AC: 1 AN: 1103680

Other (OTH) AF: 0.00 AC: 0 AN: 59240

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	1.7
DANN	Benign	0.36
DEOGEN2	Benign	0.0064	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.021	N
M_CAP	Benign	0.0033	T
MetaRNN	Benign	0.067	T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	0.55	N
PhyloP100		-0.25
PrimateAI	Benign	0.23	T
PROVEAN	Benign	-0.46	N
REVEL	Benign	0.13
Sift	Benign	0.85	T
Sift4G	Benign	0.20	T
Polyphen		0.0	B
Vest4		0.050
MutPred		0.55		Loss of disorder (P = 0.0562)
MVP		0.014
MPC		0.0029
ClinPred		0.014	T
GERP RS		-2.7
Varity_R		0.022
gMVP		0.021
Mutation Taster		=99/1	polymorphism

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

Other links and lift over

hg19: chr12-10958663;