1-207474297-G-C

Variant names:

• chr1-207474297-G-C
• rs398122863
• NM_001006658.3:c.2297G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_001006658.3(CR2):​c.2297G>C​(p.Trp766Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000434 in 1,612,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W766L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: CR2 NM_001006658.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.19
• Publications: 2 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.864

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001006658.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CR2	NM_001006658.3	MANE Select	c.2297G>C	p.Trp766Ser	missense	Exon 13 of 20	NP_001006659.1
	CR2	NM_001877.5		c.2120G>C	p.Trp707Ser	missense	Exon 12 of 19	NP_001868.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CR2	ENST00000367057.8	TSL:1 MANE Select	c.2297G>C	p.Trp766Ser	missense	Exon 13 of 20	ENSP00000356024.3
	CR2	ENST00000367058.7	TSL:1	c.2120G>C	p.Trp707Ser	missense	Exon 12 of 19	ENSP00000356025.3
	CR2	ENST00000367059.3	TSL:1	c.2120G>C	p.Trp707Ser	missense	Exon 12 of 18	ENSP00000356026.3

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152000 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1460884 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 726804

African (AFR) AF: 0.00 AC: 0 AN: 33436

American (AMR) AF: 0.00 AC: 0 AN: 44692

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26114

East Asian (EAS) AF: 0.00 AC: 0 AN: 39676

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86226

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111230

Other (OTH) AF: 0.00 AC: 0 AN: 60340

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152000 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74242

African (AFR) AF: 0.00 AC: 0 AN: 41388

American (AMR) AF: 0.00 AC: 0 AN: 15240

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10588

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 67996

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.41
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.30
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.84	D
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.72	T
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Uncertain	0.52	D
MutationAssessor	Pathogenic	4.3	H
PhyloP100		4.2
PrimateAI	Uncertain	0.52	T
PROVEAN	Pathogenic	-11	D
REVEL	Pathogenic	0.66
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.75
MutPred		0.55		Loss of ubiquitination at K710 (P = 0.0596)
MVP		0.97
MPC		0.87
ClinPred		1.0	D
GERP RS		5.7
Varity_R		0.86
gMVP		0.98
Mutation Taster		=33/67	disease causing

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

Other links and lift over

dbSNP: rs398122863; hg19: chr1-207647642;