rs201017642

Positions:

chr1-207466891-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_001006658.3(CR2):c.424C>T(p.Arg142Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000755 in 1,601,620 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000081 ( 0 hom. )

Consequence

CR2
NM_001006658.3 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 0.235

Variant links:

Genes affected

CR2 (HGNC:2336): (complement C3d receptor 2) This gene encodes a membrane protein, which functions as a receptor for Epstein-Barr virus (EBV) binding on B and T lymphocytes. Genetic variations in this gene are associated with susceptibility to systemic lupus erythematosus type 9 (SLEB9). Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

CR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 1-207466891-C-T is Pathogenic according to our data. Variant chr1-207466891-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 540314.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr1-207466891-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CR2	NM_001006658.3 linkuse as main transcript	c.424C>T	p.Arg142Ter	stop_gained	2/20	ENST00000367057.8
CR2	NM_001877.5 linkuse as main transcript	c.424C>T	p.Arg142Ter	stop_gained	2/19

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CR2	ENST00000367057.8 linkuse as main transcript	c.424C>T	p.Arg142Ter	stop_gained	2/20	1	NM_001006658.3	P1	P20023-3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152100

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000669

AC:

AN:

239128

Hom.:

AF XY:

0.0000852

AC XY:

AN XY:

129132

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000307

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000359

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000119

Gnomad OTH exome

AF:

0.000174

GnomAD4 exome

AF:

0.0000814

AC:

118

AN:

1449520

Hom.:

Cov.:

AF XY:

0.0000916

AC XY:

AN XY:

720320

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000233

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000238

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000100

Gnomad4 OTH exome

AF:

0.0000670

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152100

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74282

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000876

Hom.:

Bravo

AF:

0.0000680

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Immunodeficiency, common variable, 7

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Oct 22, 2023

This sequence change creates a premature translational stop signal (p.Arg142*) in the CR2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in CR2 are known to be pathogenic (PMID: 26325596, 28499783). This variant is present in population databases (rs201017642, gnomAD 0.01%). This premature translational stop signal has been observed in individual(s) with hypogammaglobulinemia (PMID: 26325596). ClinVar contains an entry for this variant (Variation ID: 540314). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Benign

0.12

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.026

MutationTaster

Benign

1.0

A;A;A;A

Vest4

0.91

GERP RS

1.9

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