12-10806449-G-T

Variant names:

• chr12-10806449-G-T
• rs768949566
• NM_023918.3:c.532C>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_023918.3(TAS2R8):​c.532C>A​(p.Pro178Thr) 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. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P178S) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TAS2R8 NM_023918.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.260
• Publications: 1 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: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07669544).

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.532C>A	p.Pro178Thr	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.532C>A	p.Pro178Thr	missense	Exon 1 of 1	ENSP00000240615.2	Q9NYW2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00 AC: 0 AN: 250472 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	0.43
DANN	Benign	0.37
DEOGEN2	Benign	0.0035	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.092	N
M_CAP	Benign	0.0011	T
MetaRNN	Benign	0.077	T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	-0.34	N
PhyloP100		-0.26
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.84	N
REVEL	Benign	0.057
Sift	Benign	0.25	T
Sift4G	Benign	0.52	T
Polyphen		0.0080	B
Vest4		0.13
MutPred		0.49		Loss of catalytic residue at P178 (P = 0.0695)
MVP		0.030
MPC		0.0027
ClinPred		0.23	T
GERP RS		-1.4
Varity_R		0.084
gMVP		0.046
Mutation Taster		=100/0	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

dbSNP: rs768949566; hg19: chr12-10959048;