12-11267993-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001394862.1(PRB3):c.256G>A(p.Gly86Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000308 in 1,590,756 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G86E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 21)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

PRB3
NM_001394862.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.154

Variant links:

Genes affected

PRB3 (HGNC:9339): (proline rich protein BstNI subfamily 3) This gene encodes a member of the heterogeneous family of basic, proline-rich, human salivary glycoproteins. Multiple alleles of this gene exhibiting variations in the length of the tandem repeats have been identified. The reference genome encodes the "Long" allele. The protein isoforms encoded by this gene are recognized as the "first line of oral defense" against the detrimental effects of polyphenols in the diet and pathogen infections. This gene is located in a cluster of closely related salivary proline-rich proteins on chromosome 12. [provided by RefSeq, Nov 2015]

PRB3 links:

LOC107987435 (HGNC:):

LOC107987435 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.031896144).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PRB3	NM_001394862.1 linkuse as main transcript	c.256G>A	p.Gly86Arg	missense_variant	3/4	ENST00000538488.3
LOC107987435	XR_007063209.1 linkuse as main transcript	n.761-9477C>T		intron_variant, non_coding_transcript_variant
PRB3	NM_006249.5 linkuse as main transcript	c.256G>A	p.Gly86Arg	missense_variant	3/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRB3	ENST00000538488.3 linkuse as main transcript	c.256G>A	p.Gly86Arg	missense_variant	3/4	5	NM_001394862.1	P1
PRB3	ENST00000539835.1 linkuse as main transcript	n.263G>A		non_coding_transcript_exon_variant	2/2	2

Frequencies

GnomAD3 genomes

AF:

0.000152

AC:

AN:

144802

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000131

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00110

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:

0.000503

GnomAD3 exomes

AF:

0.0000400

AC:

AN:

249696

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135466

show subpopulations

Gnomad AFR exome

AF:

0.000327

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.0000187

AC:

AN:

1445834

Hom.:

Cov.:

AF XY:

0.0000167

AC XY:

AN XY:

718918

show subpopulations

Gnomad4 AFR exome

AF:

0.000181

Gnomad4 AMR exome

AF:

0.000272

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000182

Gnomad4 OTH exome

AF:

0.000118

GnomAD4 genome

AF:

0.000152

AC:

AN:

144922

Hom.:

Cov.:

AF XY:

0.000199

AC XY:

AN XY:

70484

show subpopulations

Gnomad4 AFR

AF:

0.000130

Gnomad4 AMR

AF:

0.00110

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000497

Alfa

AF:

0.0000843

Hom.:

ESP6500AA

AF:

0.000235

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000166

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 29, 2022

The c.256G>A (p.G86R) alteration is located in exon 3 (coding exon 3) of the PRB3 gene. This alteration results from a G to A substitution at nucleotide position 256, causing the glycine (G) at amino acid position 86 to be replaced by an arginine (R). 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

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.40

Cadd

Benign

Dann

Benign

0.87

DEOGEN2

Benign

0.22

T;.

Eigen

Benign

-0.96

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.0030

M_CAP

Benign

0.00063

MetaRNN

Benign

0.032

T;T

MetaSVM

Benign

-0.97

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.38

PROVEAN

Uncertain

-3.1

D;D

REVEL

Benign

0.042

Sift4G

Uncertain

0.011

D;T

Vest4

0.23

MutPred

0.37

Gain of catalytic residue at P81 (P = 0);Gain of catalytic residue at P81 (P = 0);

MVP

0.072

MPC

0.39

ClinPred

0.11

GERP RS

-0.037

gMVP

0.089

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over