5-40955428-G-C

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_000587.4(C7):c.1135G>C(p.Gly379Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,612,162 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 Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

C7
NM_000587.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:7U:1

Conservation

PhyloP100: 8.86

Variant links:

Genes affected

C7 (HGNC:1346): (complement C7) This gene encodes a serum glycoprotein that forms a membrane attack complex together with complement components C5b, C6, C8, and C9 as part of the terminal complement pathway of the innate immune system. The protein encoded by this gene contains a cholesterol-dependent cytolysin/membrane attack complex/perforin-like (CDC/MACPF) domain and belongs to a large family of structurally related molecules that form pores involved in host immunity and bacterial pathogenesis. This protein initiates membrane attack complex formation by binding the C5b-C6 subcomplex and inserts into the phospholipid bilayer, serving as a membrane anchor. Mutations in this gene are associated with a rare disorder called C7 deficiency. [provided by RefSeq, Nov 2016]

C7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.986

PP5

Variant 5-40955428-G-C is Pathogenic according to our data. Variant chr5-40955428-G-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 12108.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-40955428-G-C is described in UniProt as null. Variant chr5-40955428-G-C is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C7	NM_000587.4 link	c.1135G>C	p.Gly379Arg	missense_variant	Exon 10 of 18	ENST00000313164.10	NP_000578.2	P10643Q05CI3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
C7	ENST00000313164.10 link	c.1135G>C	p.Gly379Arg	missense_variant	Exon 10 of 18	1	NM_000587.4	ENSP00000322061.9		P10643

Frequencies

GnomAD3 genomes

AF:

0.000177

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000220

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000133

AC:

AN:

247290

Hom.:

AF XY:

0.000164

AC XY:

AN XY:

134218

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000207

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000992

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000205

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000149

AC:

218

AN:

1459842

Hom.:

Cov.:

AF XY:

0.000145

AC XY:

105

AN XY:

726218

show subpopulations

Gnomad4 AFR exome

AF:

0.0000599

Gnomad4 AMR exome

AF:

0.000203

Gnomad4 ASJ exome

AF:

0.000115

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000466

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000157

Gnomad4 OTH exome

AF:

0.000249

GnomAD4 genome

AF:

0.000177

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.0000240

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000220

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000169

Hom.:

Bravo

AF:

0.000238

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000243

AC:

ExAC

AF:

0.000132

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000298

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:7Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Complement component 7 deficiency

Pathogenic:3Uncertain:1

Dec 01, 2004

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Mar 29, 2024

Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 07, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 24, 2022

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: research

- -

not provided

Pathogenic:3

May 27, 2022

Clinical Genetics Laboratory, Skane University Hospital Lund

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 379 of the C7 protein (p.Gly379Arg). This variant is present in population databases (rs121964921, gnomAD 0.02%). This missense change has been observed in individual(s) with C7 deficiency (PMID: 9218625, 12869030, 15554930). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. This variant is also known as G357R. ClinVar contains an entry for this variant (Variation ID: 12108). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt C7 protein function with a positive predictive value of 80%. For these reasons, this variant has been classified as Pathogenic. -

Mar 06, 2025

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Also known as G357R using alternate nomenclature; This variant is associated with the following publications: (PMID: 11252001, 8871666, 15554930, 12869030, 17407100, 28368462, 31203817, 9218625, 12116267, 31589614, 34426522, 36324046, 37304269) -

C7-related disorder

Pathogenic:1

Mar 22, 2024

PreventionGenetics, part of Exact Sciences

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

The C7 c.1135G>C variant is predicted to result in the amino acid substitution p.Gly379Arg. This variant is also described using legacy nomenclature as p.Gly357Arg, has been reported in the homozygous or heterozygous states in multiple individuals/families with C7 deficiency (Fernie et al. 1997. PubMed ID: 9218625; Vázquez-Bermúdez et al. 2003. PubMed ID: 12869030; Barroso et al. 2004. PubMed ID: 15554930). This variant is reported in 0.020% of alleles in individuals of Latino descent in gnomAD. This variant is interpreted as likely pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.35

BayesDel_noAF

Pathogenic

0.56

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.54

Eigen

Pathogenic

0.77

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.74

M_CAP

Pathogenic

0.31

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.1

PrimateAI

Benign

0.45

PROVEAN

Pathogenic

-7.4

REVEL

Pathogenic

0.95

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.96

MutPred

0.96

Gain of sheet (P = 0.0043);

MVP

0.94

MPC

0.14

ClinPred

0.89

GERP RS

5.0

Varity_R

0.95

gMVP

0.97

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