chr12-10930926-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001110213.1(PRH2):c.365G>A(p.Arg122Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 30)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

PRH2
NM_001110213.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -3.29

Publications

1 publications found

Variant links:

Genes affected

PRH2 (HGNC:9367): (proline rich protein HaeIII subfamily 2) 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. In western population this locus is commonly biallelic and encodes proline-rich protein (PRP) isoforms, PRP-1 and PRP-2. The reference genome encodes the PRP-1 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. [provided by RefSeq, Oct 2015]

PRH2 links:

ENSG00000275778 (HGNC:):

ENSG00000275778 links:

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]

PRH1 links:

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]

PRR4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.03221941).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRH2	NM_001110213.1 link	c.365G>A	p.Arg122Gln	missense_variant	Exon 3 of 4	ENST00000396400.4	NP_001103683.1	P02810

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRH2	ENST00000396400.4 link	c.365G>A	p.Arg122Gln	missense_variant	Exon 3 of 4	1	NM_001110213.1	ENSP00000379682.3		P02810
ENSG00000275778	ENST00000536668.2 link	n.176+42729C>T		intron_variant	Intron 4 of 9	5		ENSP00000482961.1		A0A087WZY1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

148520

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000123

AC:

AN:

243322

AF XY:

0.0000151

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000294

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000111

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000962

AC:

AN:

1454984

Hom.:

Cov.:

AF XY:

0.0000111

AC XY:

AN XY:

723432

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000300

AC:

AN:

33278

American (AMR)

AF:

0.0000453

AC:

AN:

44168

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25822

East Asian (EAS)

AF:

0.0000759

AC:

AN:

39522

South Asian (SAS)

AF:

0.0000701

AC:

AN:

85582

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53130

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4848

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1108634

Other (OTH)

AF:

0.00

AC:

AN:

60000

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000007), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.332

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

148642

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

72460

African (AFR)

AF:

0.00

AC:

AN:

40318

American (AMR)

AF:

0.00

AC:

AN:

14966

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3416

East Asian (EAS)

AF:

0.00

AC:

AN:

5044

South Asian (SAS)

AF:

0.00

AC:

AN:

4554

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10270

Middle Eastern (MID)

AF:

0.00

AC:

AN:

288

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

66832

Other (OTH)

AF:

0.00

AC:

AN:

2056

Alfa

AF:

0.000422

Hom.:

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 10, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.365G>A (p.R122Q) alteration is located in exon 3 (coding exon 3) of the PRH2 gene. This alteration results from a G to A substitution at nucleotide position 365, causing the arginine (R) at amino acid position 122 to be replaced by a glutamine (Q). 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

0.059

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.78

CADD

Benign

0.019

(source)

DANN

Benign

0.44

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.0012

M_CAP

Benign

0.0015

MetaRNN

Benign

0.032

T;T

MetaSVM

Benign

-0.95

PhyloP100

-3.3

PrimateAI

Benign

0.42

PROVEAN

Benign

0.50

N;N

REVEL

Benign

0.013

Sift

Benign

0.27

T;T

Sift4G

Benign

0.68

T;T

Vest4

0.10

MVP

0.082

MPC

1.8

ClinPred

0.044

GERP RS

-1.4

gMVP

0.23

Mutation Taster

=99/1

polymorphism

(source)

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over