NM_001006658.3:c.3047C>T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_001006658.3(CR2):c.3047C>T(p.Ser1016Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000123 in 1,613,976 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 Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. S1016S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

CR2
NM_001006658.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 0.00600

Publications

3 publications found

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 Gene-Disease associations (from GenCC):

immunodeficiency, common variable, 7
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)
common variable immunodeficiency
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
systemic lupus erythematosus
Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

CR2 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=0.017832577).

BS1

Variant frequency is greater than expected in population afr. GnomAdExome4 allele frequency = 0.000101 (148/1461736) while in subpopulation AFR AF = 0.00158 (53/33474). AF 95% confidence interval is 0.00124. There are 0 homozygotes in GnomAdExome4. There are 75 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CR2	NM_001006658.3 link	c.3047C>T	p.Ser1016Leu	missense_variant	Exon 16 of 20	ENST00000367057.8	NP_001006659.1	P20023-3
CR2	NM_001877.5 link	c.2870C>T	p.Ser957Leu	missense_variant	Exon 15 of 19		NP_001868.2	P20023-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CR2	ENST00000367057.8 link	c.3047C>T	p.Ser1016Leu	missense_variant	Exon 16 of 20	1	NM_001006658.3	ENSP00000356024.3		P20023-3

Frequencies

GnomAD3 genomes

AF:

0.000322

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000796

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.000176

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000956

AC:

AN:

250984

AF XY:

0.0000811

show subpopulations

Gnomad AFR exome

AF:

0.000677

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000705

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000101

AC:

148

AN:

1461736

Hom.:

Cov.:

AF XY:

0.000103

AC XY:

AN XY:

727166

show subpopulations

African (AFR)

AF:

0.00158

AC:

AN:

33474

American (AMR)

AF:

0.000112

AC:

AN:

44690

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39674

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.00121

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000513

AC:

AN:

1111954

Other (OTH)

AF:

0.000364

AC:

AN:

60386

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

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:

0.000335

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.000349

AC XY:

AN XY:

74426

show subpopulations

African (AFR)

AF:

0.000842

AC:

AN:

41554

American (AMR)

AF:

0.000262

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.512

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:

0.000168

Hom.:

Bravo

AF:

0.000249

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000115

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Breakthrough Genomics, Breakthrough Genomics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Aug 14, 2017

Blueprint Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Mar 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

CR2: PM2, BP4 -

Immunodeficiency, common variable, 7

Uncertain:2

Oct 25, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 1016 of the CR2 protein (p.Ser1016Leu). This variant is present in population databases (rs138062179, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with CR2-related conditions. ClinVar contains an entry for this variant (Variation ID: 578084). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Apr 11, 2023

Genome-Nilou Lab

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

CR2-related disorder

Uncertain:1

May 31, 2023

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The CR2 c.3047C>T variant is predicted to result in the amino acid substitution p.Ser1016Leu. This variant was reported in an individual with severe hypertension and renal microangiopathy (Patient 37, Larsen et al. 2017. PubMed ID: 29148534). This variant is reported in 0.052% of alleles in individuals of African descent in gnomAD (http://gnomad.broadinstitute.org/variant/1-207651374-C-T), which may be too common to be causative of disease. Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Systemic lupus erythematosus, susceptibility to, 9;C3150354:Immunodeficiency, common variable, 2;C3542922:Immunodeficiency, common variable, 7

Uncertain:1

Apr 13, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.15

T;.;.

Eigen

Benign

-0.83

Eigen_PC

Benign

-0.96

FATHMM_MKL

Benign

0.020

LIST_S2

Benign

0.80

T;T;T

M_CAP

Benign

0.016

MetaRNN

Benign

0.018

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.6

L;.;.

PhyloP100

0.0060

PrimateAI

Benign

0.24

PROVEAN

Benign

-1.4

N;N;N

REVEL

Benign

0.084

Sift

Benign

0.24

T;T;T

Sift4G

Benign

0.15

T;T;T

Polyphen

0.76

P;P;B

Vest4

0.13

MVP

0.71

MPC

0.16

ClinPred

0.0065

GERP RS

-0.58

Varity_R

0.035

gMVP

0.32

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