12-10809231-A-G

Variant names:

• chr12-10809231-A-G
• rs1263090969
• NM_023917.2:c.845T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_023917.2(TAS2R9):​c.845T>C​(p.Leu282Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. L282Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TAS2R9 NM_023917.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.89
• Publications: 0 publications found

Genes affected

TAS2R9 (HGNC:14917): (taste 2 receptor member 9) 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_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.981

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023917.2. 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
	TAS2R9	NM_023917.2	MANE Select	c.845T>C	p.Leu282Pro	missense	Exon 1 of 1	NP_076406.1	Q9NYW1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAS2R9	ENST00000240691.4	TSL:6 MANE Select	c.845T>C	p.Leu282Pro	missense	Exon 1 of 1	ENSP00000240691.2	Q9NYW1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.00000378

EpiCase AF: 0.0000546

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.62
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Uncertain	0.13
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.14	T
Eigen	Uncertain	0.38
Eigen_PC	Benign	0.12
FATHMM_MKL	Uncertain	0.78	D
M_CAP	Benign	0.0060	T
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	-0.12	T
MutationAssessor	Pathogenic	3.1	M
PhyloP100		5.9
PrimateAI	Benign	0.45	T
PROVEAN	Pathogenic	-6.5	D
REVEL	Uncertain	0.42
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.85
MutPred		0.90		Loss of stability (P = 0.0057)
MVP		0.33
MPC		0.047
ClinPred		0.99	D
GERP RS		4.3
Varity_R		0.95
gMVP		0.45
Mutation Taster		=93/7	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1263090969; hg19: chr12-10961830;