12-10938819-A-G

Variant names:

• chr12-10938819-A-G
• rs746098263
• NM_023922.2:c.389T>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_023922.2(TAS2R14):​c.389T>C​(p.Val130Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. V130G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: TAS2R14 NM_023922.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.14
• Publications: 0 publications found

Genes affected

TAS2R14 (HGNC:14920): (taste 2 receptor member 14) 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]

ENSG00000275778 (HGNC:):

PRH1 (HGNC:9366): (proline rich protein HaeIII subfamily 1) This gene encodes a member of the heterogeneous family of proline-rich salivary glycoproteins. The encoded preproprotein undergoes proteolytic processing to generate one or more mature isoforms before secretion from the parotid and submandibular/sublingual glands. Multiple distinct alleles of this locus including the parotid isoelectric-focusing variant slow (PIF-s), the parotid acidic protein (Pa), and the double band slow (Db-s) isoforms have been characterized. The reference genome encodes the Db-s allele. Certain alleles of this gene are associated with susceptibility to dental caries. This gene is located in a cluster of closely related salivary proline-rich proteins on chromosome 12. Co-transcription of this gene with adjacent genes has been observed. Alternate splicing of this gene results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Oct 2015]

PRR4 (HGNC:18020): (proline rich 4) This gene encodes a member of the proline-rich protein family that lacks a conserved repetitive domain. This protein may play a role in protective functions in the eye. Alternative splicing result in multiple transcript variants. Read-through transcription also exists between this gene and the upstream PRH1 (proline-rich protein HaeIII subfamily 1) gene. [provided by RefSeq, Feb 2011]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.30453497).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023922.2. 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
	TAS2R14	NM_023922.2	MANE Select	c.389T>C	p.Val130Ala	missense	Exon 1 of 1	NP_076411.1	Q9NYV8
	PRH1	NM_001291315.2		c.103+34836T>C		intron	N/A	NP_001278244.1
	PRH1	NM_001291314.2		c.-59+34836T>C		intron	N/A	NP_001278243.1	A0A087WV42

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAS2R14	ENST00000537503.2	TSL:6 MANE Select	c.389T>C	p.Val130Ala	missense	Exon 1 of 1	ENSP00000441949.1	Q9NYV8
	ENSG00000275778	ENST00000536668.2	TSL:5	n.176+34836T>C		intron	N/A	ENSP00000482961.1	A0A087WZY1
	PRH1	ENST00000703543.1		c.-59+34836T>C		intron	N/A	ENSP00000515364.1	A0A087WYT0

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000400 AC: 1 AN: 249974 AF XY: 0.00000740

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000291

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 AF: 0.00000205 AC: 3 AN: 1461184 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 726896

African (AFR) AF: 0.00 AC: 0 AN: 33406

American (AMR) AF: 0.0000448 AC: 2 AN: 44626

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26112

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

South Asian (SAS) AF: 0.00 AC: 0 AN: 86172

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53112

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111934

Other (OTH) AF: 0.00 AC: 0 AN: 60366

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Benign	-0.060	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.062	T
Eigen	Benign	0.17
Eigen_PC	Benign	-0.073
FATHMM_MKL	Benign	0.17	N
M_CAP	Benign	0.0065	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-0.80	T
MutationAssessor	Pathogenic	3.2	M
PhyloP100		4.1
PrimateAI	Benign	0.30	T
PROVEAN	Uncertain	-3.7	D
REVEL	Benign	0.18
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.21
MutPred		0.57		Loss of methylation at K128 (P = 0.0841)
MVP		0.50
MPC		0.11
ClinPred		0.75	D
GERP RS		4.0
PromoterAI		-0.00040	Neutral
Varity_R		0.51
gMVP		0.21
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs746098263; hg19: chr12-11091418;