Variant 3-194341358-G-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001080513.4(CPN2):c.1345C>T(p.Arg449Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000219 in 1,613,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00023 ( 0 hom. )

Consequence

CPN2
NM_001080513.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.870

Variant links:

Genes affected

CPN2 (HGNC:2313): (carboxypeptidase N subunit 2) Predicted to be involved in regulation of catalytic activity. Located in blood microparticle and extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

CPN2 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=0.046276838).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CPN2	NM_001080513.4 linkuse as main transcript	c.1345C>T	p.Arg449Trp	missense_variant	2/2	ENST00000323830.4
CPN2	NM_001291988.2 linkuse as main transcript	c.1345C>T	p.Arg449Trp	missense_variant	2/2
CPN2	XM_005269280.5 linkuse as main transcript	c.1345C>T	p.Arg449Trp	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CPN2	ENST00000323830.4 linkuse as main transcript	c.1345C>T	p.Arg449Trp	missense_variant	2/2	1	NM_001080513.4	P1
CPN2	ENST00000429275.1 linkuse as main transcript	c.1345C>T	p.Arg449Trp	missense_variant	2/2	5		P1

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000565

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000112

AC:

AN:

251106

Hom.:

AF XY:

0.000133

AC XY:

AN XY:

135814

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000462

Gnomad NFE exome

AF:

0.000115

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000229

AC:

334

AN:

1461648

Hom.:

Cov.:

AF XY:

0.000241

AC XY:

175

AN XY:

727134

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000357

Gnomad4 NFE exome

AF:

0.000265

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000131

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000565

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000140

Hom.:

Bravo

AF:

0.000102

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000115

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

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

Aug 02, 2021

The c.1345C>T (p.R449W) alteration is located in exon 2 (coding exon 1) of the CPN2 gene. This alteration results from a C to T substitution at nucleotide position 1345, causing the arginine (R) at amino acid position 449 to be replaced by a tryptophan (W). 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

-0.37

BayesDel_noAF

Benign

-0.53

Cadd

Benign

Dann

Benign

0.97

DEOGEN2

Benign

0.22

T;T

Eigen

Benign

-0.94

Eigen_PC

Benign

-0.94

FATHMM_MKL

Benign

0.030

M_CAP

Benign

0.014

MetaRNN

Benign

0.046

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.0

N;N

REVEL

Benign

0.090

Sift

Benign

0.046

D;D

Sift4G

Uncertain

0.059

T;T

Polyphen

0.0060

B;B

Vest4

0.11

MVP

0.68

MPC

0.19

ClinPred

0.028

GERP RS

-0.21

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.038

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