Genetic Variant PRG3:p.Glu63Lys (chr11-57379682-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_006093.4(PRG3):c.187G>A(p.Glu63Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000595 in 1,613,978 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

PRG3
NM_006093.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.208

Variant links:

Genes affected

PRG3 (HGNC:9363): (proteoglycan 3, pro eosinophil major basic protein 2) An extracellular matrix structural constituent conferring compression resistance. Involved in several processes, including granulocyte activation; histamine biosynthetic process; and regulation of gene expression. Located in collagen-containing extracellular matrix. [provided by Alliance of Genome Resources, Apr 2022]

PRG3 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=0.029723525).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRG3	NM_006093.4 link	c.187G>A	p.Glu63Lys	missense_variant	Exon 3 of 6	ENST00000287143.2	NP_006084.2	Q9Y2Y8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRG3	ENST00000287143.2 link	c.187G>A	p.Glu63Lys	missense_variant	Exon 3 of 6	1	NM_006093.4	ENSP00000287143.2		Q9Y2Y8

Frequencies

GnomAD3 genomes

AF:

0.000322

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00116

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:

0.000478

GnomAD3 exomes

AF:

0.0000915

AC:

AN:

251302

Hom.:

AF XY:

0.0000809

AC XY:

AN XY:

135890

show subpopulations

Gnomad AFR exome

AF:

0.00129

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000315

AC:

AN:

1461658

Hom.:

Cov.:

AF XY:

0.0000330

AC XY:

AN XY:

727124

show subpopulations

Gnomad4 AFR exome

AF:

0.00119

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000328

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.000336

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.00115

Gnomad4 AMR

AF:

0.0000653

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:

0.000473

Alfa

AF:

0.0000516

Hom.:

Bravo

AF:

0.000355

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000906

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 22, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.187G>A (p.E63K) alteration is located in exon 3 (coding exon 2) of the PRG3 gene. This alteration results from a G to A substitution at nucleotide position 187, causing the glutamic acid (E) at amino acid position 63 to be replaced by a lysine (K). 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

0.085

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.082

Eigen

Benign

-0.091

Eigen_PC

Benign

-0.27

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.64

M_CAP

Benign

0.031

MetaRNN

Benign

0.030

MetaSVM

Benign

-0.89

MutationAssessor

Uncertain

2.4

PrimateAI

Benign

0.31

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.091

Sift

Benign

0.060

Sift4G

Uncertain

0.037

Polyphen

0.97

Vest4

0.25

MVP

0.52

MPC

0.067

ClinPred

0.11

GERP RS

4.5

Varity_R

0.26

gMVP

0.47

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