X-37453425-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001142395.2(PRRG1):c.461G>A(p.Gly154Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000273 in 1,097,361 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 22)

Exomes 𝑓: 0.0000027 ( 0 hom. 2 hem. )

Consequence

PRRG1
NM_001142395.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.28

Publications

0 publications found

Variant links:

Genes affected

PRRG1 (HGNC:9469): (proline rich and Gla domain 1) This gene encodes a vitamin K-dependent, gamma-carboxyglutamic acid (Gla)-containing, single-pass transmembrane protein. This protein contains a Gla domain at the N-terminus, preceded by a propeptide sequence required for post-translational gamma-carboxylation of specific glutamic acid residues by a vitamin K-dependent gamma-carboxylase. The C-terminus is proline-rich containing PPXY and PXXP motifs found in a variety of signaling and cytoskeletal proteins. This gene is highly expressed in the spinal cord. Several alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2010]

PRRG1 links:

ENSG00000250349 (HGNC:):

ENSG00000250349 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BS2

High Hemizygotes in GnomAdExome4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRRG1	NM_001142395.2 link	c.461G>A	p.Gly154Glu	missense_variant	Exon 4 of 4	ENST00000378628.9	NP_001135867.1	O14668-1Q8NEK6
PRRG1	NM_000950.3 link	c.461G>A	p.Gly154Glu	missense_variant	Exon 5 of 5		NP_000941.1	O14668-1Q8NEK6
PRRG1	NM_001173489.2 link	c.461G>A	p.Gly154Glu	missense_variant	Exon 5 of 5		NP_001166960.1	O14668-1
PRRG1	NM_001173490.2 link	c.461G>A	p.Gly154Glu	missense_variant	Exon 4 of 4		NP_001166961.1	O14668-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRRG1	ENST00000378628.9 link	c.461G>A	p.Gly154Glu	missense_variant	Exon 4 of 4	1	NM_001142395.2	ENSP00000367894.4		O14668-1
ENSG00000250349	ENST00000465127.1 link	c.171+27425G>A		intron_variant	Intron 3 of 8	5		ENSP00000417050.1		B4E171

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000546

AC:

AN:

183309

AF XY:

0.0000148

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000365

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:

0.00000273

AC:

AN:

1097361

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

362751

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26396

American (AMR)

AF:

0.0000568

AC:

AN:

35202

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19381

East Asian (EAS)

AF:

0.00

AC:

AN:

30201

South Asian (SAS)

AF:

0.00

AC:

AN:

54109

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40529

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4137

European-Non Finnish (NFE)

AF:

0.00000119

AC:

AN:

841327

Other (OTH)

AF:

0.00

AC:

AN:

46079

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.000223

Hom.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 14, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.461G>A (p.G154E) alteration is located in exon 5 (coding exon 3) of the PRRG1 gene. This alteration results from a G to A substitution at nucleotide position 461, causing the glycine (G) at amino acid position 154 to be replaced by a glutamic acid (E). 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

0.14

BayesDel_addAF

Pathogenic

0.48

BayesDel_noAF

Pathogenic

0.46

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.013

T;T;T;T

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.75

.;.;T;.

M_CAP

Pathogenic

0.74

MetaRNN

Uncertain

0.46

T;T;T;T

MetaSVM

Uncertain

0.49

MutationAssessor

Benign

1.8

L;L;L;L

PhyloP100

2.3

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-0.93

N;N;N;N

REVEL

Uncertain

0.60

Sift

Benign

0.27

T;T;T;T

Sift4G

Benign

0.64

T;T;T;T

Polyphen

0.99

D;D;D;D

Vest4

0.31

MutPred

0.56

Loss of catalytic residue at D157 (P = 0.061);Loss of catalytic residue at D157 (P = 0.061);Loss of catalytic residue at D157 (P = 0.061);Loss of catalytic residue at D157 (P = 0.061);

MVP

0.72

MPC

0.94

ClinPred

0.32

GERP RS

6.0

Varity_R

0.21

gMVP

0.67

Mutation Taster

=90/10

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over