Genetic Variant PRRG1:p.Asn127Thr (chrX-37453344-A-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001142395.2(PRRG1):c.380A>C(p.Asn127Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000182 in 1,097,031 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.0000018 ( 0 hom. 1 hem. )

Consequence

PRRG1
NM_001142395.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.54

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25540638).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRRG1	NM_001142395.2 link	c.380A>C	p.Asn127Thr	missense_variant	Exon 4 of 4	ENST00000378628.9	NP_001135867.1	O14668-1Q8NEK6
PRRG1	NM_000950.3 link	c.380A>C	p.Asn127Thr	missense_variant	Exon 5 of 5		NP_000941.1	O14668-1Q8NEK6
PRRG1	NM_001173489.2 link	c.380A>C	p.Asn127Thr	missense_variant	Exon 5 of 5		NP_001166960.1	O14668-1
PRRG1	NM_001173490.2 link	c.380A>C	p.Asn127Thr	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.380A>C	p.Asn127Thr	missense_variant	Exon 4 of 4	1	NM_001142395.2	ENSP00000367894.4		O14668-1
ENSG00000250349	ENST00000465127.1 link	c.171+27344A>C		intron_variant	Intron 3 of 8	5		ENSP00000417050.1		B4E171

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000182

AC:

AN:

1097031

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

362455

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26379

American (AMR)

AF:

0.00

AC:

AN:

35204

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19379

East Asian (EAS)

AF:

0.00

AC:

AN:

30199

South Asian (SAS)

AF:

0.00

AC:

AN:

54121

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40534

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4134

European-Non Finnish (NFE)

AF:

0.00000238

AC:

AN:

841022

Other (OTH)

AF:

0.00

AC:

AN:

46059

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.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 05, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.380A>C (p.N127T) alteration is located in exon 5 (coding exon 3) of the PRRG1 gene. This alteration results from a A to C substitution at nucleotide position 380, causing the asparagine (N) at amino acid position 127 to be replaced by a threonine (T). 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

0.11

BayesDel_addAF

Uncertain

0.039

BayesDel_noAF

Benign

-0.18

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.019

T;T;T;T;T

FATHMM_MKL

Benign

0.70

LIST_S2

Benign

0.75

.;T;.;T;.

M_CAP

Uncertain

0.24

MetaRNN

Benign

0.26

T;T;T;T;T

MetaSVM

Uncertain

0.035

MutationAssessor

Benign

0.69

N;.;N;N;N

PhyloP100

2.5

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.18

N;N;N;N;N

REVEL

Uncertain

0.41

Sift

Benign

0.82

T;T;T;T;T

Sift4G

Benign

0.63

T;T;T;T;T

Polyphen

0.010

B;.;B;B;B

Vest4

0.20

MutPred

0.42

Gain of sheet (P = 0.0011);Gain of sheet (P = 0.0011);Gain of sheet (P = 0.0011);Gain of sheet (P = 0.0011);Gain of sheet (P = 0.0011);

MVP

0.59

MPC

0.27

ClinPred

0.68

GERP RS

3.7

Varity_R

0.11

gMVP

0.25

Mutation Taster

=76/24

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over