rs144538512

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_002951.5(RPN2):c.188C>T(p.Ala63Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000248 in 1,614,198 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00043 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00023 ( 0 hom. )

Consequence

RPN2
NM_002951.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.683

Publications

2 publications found

Variant links:

Genes affected

RPN2 (HGNC:10382): (ribophorin II) This gene encodes a type I integral membrane protein found only in the rough endoplasmic reticulum. The encoded protein is part of an N-oligosaccharyl transferase complex that links high mannose oligosaccharides to asparagine residues found in the Asn-X-Ser/Thr consensus motif of nascent polypeptide chains. This protein is similar in sequence to the yeast oligosaccharyl transferase subunit SWP1. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2008]

RPN2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.014599979).

BP6

Variant 20-37184354-C-T is Benign according to our data. Variant chr20-37184354-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 572778.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RPN2	NM_002951.5 link	c.188C>T	p.Ala63Val	missense_variant	Exon 2 of 17	ENST00000237530.11	NP_002942.2	P04844-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RPN2	ENST00000237530.11 link	c.188C>T	p.Ala63Val	missense_variant	Exon 2 of 17	1	NM_002951.5	ENSP00000237530.6		P04844-1

Frequencies

GnomAD3 genomes

AF:

0.000434

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00249

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000485

AC:

122

AN:

251468

AF XY:

0.000500

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00121

Gnomad ASJ exome

AF:

0.00268

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000378

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000229

AC:

335

AN:

1461858

Hom.:

Cov.:

AF XY:

0.000243

AC XY:

177

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.000269

AC:

AN:

33480

American (AMR)

AF:

0.00116

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00199

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00485

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000136

AC:

151

AN:

1111980

Other (OTH)

AF:

0.000613

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

111

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

AF:

0.000427

AC:

AN:

152340

Hom.:

Cov.:

AF XY:

0.000430

AC XY:

AN XY:

74492

show subpopulations

African (AFR)

AF:

0.0000962

AC:

AN:

41586

American (AMR)

AF:

0.00248

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00115

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000250

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.538

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000415

Hom.:

Bravo

AF:

0.000465

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000354

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000474

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

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.188C>T (p.A63V) alteration is located in exon 2 (coding exon 2) of the RPN2 gene. This alteration results from a C to T substitution at nucleotide position 188, causing the alanine (A) at amino acid position 63 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Congenital disorder of glycosylation

Benign:1

Apr 25, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.064

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.52

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.063

T;.;T

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.37

LIST_S2

Benign

0.85

T;T;T

M_CAP

Benign

0.0034

MetaRNN

Benign

0.015

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;L;.

PhyloP100

0.68

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.92

N;N;N

REVEL

Benign

0.024

Sift

Benign

0.27

T;T;T

Sift4G

Benign

0.56

T;T;T

Polyphen

0.0

B;.;.

Vest4

0.24

MVP

0.39

MPC

0.16

ClinPred

0.018

GERP RS

1.7

Varity_R

0.032

gMVP

0.33

Mutation Taster

=93/7

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over