4-109760294-C-T

Position:

chr4-109760294-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PP3_StrongBP6

The NM_000204.5(CFI):c.859G>A(p.Gly287Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000198 in 1,613,894 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

CFI
NM_000204.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2

Conservation

PhyloP100: 4.18

Variant links:

Genes affected

CFI (HGNC:5394): (complement factor I) This gene encodes a serine proteinase that is essential for regulating the complement cascade. The encoded preproprotein is cleaved to produce both heavy and light chains, which are linked by disulfide bonds to form a heterodimeric glycoprotein. This heterodimer can cleave and inactivate the complement components C4b and C3b, and it prevents the assembly of the C3 and C5 convertase enzymes. Defects in this gene cause complement factor I deficiency, an autosomal recessive disease associated with a susceptibility to pyogenic infections. Mutations in this gene have been associated with a predisposition to atypical hemolytic uremic syndrome, a disease characterized by acute renal failure, microangiopathic hemolytic anemia and thrombocytopenia. Primary glomerulonephritis with immune deposits and age-related macular degeneration are other conditions associated with mutations of this gene. [provided by RefSeq, Dec 2015]

CFI links:

ENSG00000285330 (HGNC:):

ENSG00000285330 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.964

BP6

Variant 4-109760294-C-T is Benign according to our data. Variant chr4-109760294-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 347166.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CFI	NM_000204.5 linkuse as main transcript	c.859G>A	p.Gly287Arg	missense_variant	6/13	ENST00000394634.7	NP_000195.3	P05156A8K3L0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CFI	ENST00000394634.7 linkuse as main transcript	c.859G>A	p.Gly287Arg	missense_variant	6/13	1	NM_000204.5	ENSP00000378130.2		P05156
ENSG00000285330	ENST00000645635.1 linkuse as main transcript	c.859G>A	p.Gly287Arg	missense_variant	6/15			ENSP00000493607.1		A0A2R8Y3M9

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152252

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000477

AC:

AN:

251420

Hom.:

AF XY:

0.0000736

AC XY:

AN XY:

135872

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000967

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000213

AC:

311

AN:

1461524

Hom.:

Cov.:

AF XY:

0.000198

AC XY:

144

AN XY:

727112

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000275

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152370

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.0000481

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:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000190

Hom.:

Bravo

AF:

0.0000756

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 31, 2022

This sequence change replaces glycine with arginine at codon 287 of the CFI protein (p.Gly287Arg). The glycine residue is highly conserved and there is a moderate physicochemical difference between glycine and arginine. This variant is present in population databases (rs182078921, gnomAD 0.009%). This missense change has been observed in individual(s) with atypical hemolytic uremic syndrome and age-related macular degeneration (PMID: 20513133, 24029428, 27268256, 28282489, 28750931). ClinVar contains an entry for this variant (Variation ID: 347166). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CFI protein function. 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. -

Atypical hemolytic-uremic syndrome with I factor anomaly;C3463916:Factor I deficiency;C3809523:Age related macular degeneration 13

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Feb 20, 2024

- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 17, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

CFI-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 28, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.44

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

.;D;D;T;.

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.88

D;D;D;D;T

M_CAP

Pathogenic

0.56

MetaRNN

Pathogenic

0.96

D;D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.3

.;M;.;.;.

PrimateAI

Uncertain

0.56

PROVEAN

Pathogenic

-7.6

.;D;D;.;D

REVEL

Pathogenic

0.78

Sift

Uncertain

0.0020

.;D;D;.;D

Sift4G

Pathogenic

0.0

.;D;D;D;D

Polyphen

1.0

.;D;D;.;D

Vest4

0.81, 0.73, 0.76, 0.72

MutPred

0.73

Gain of glycosylation at T286 (P = 0.0535);Gain of glycosylation at T286 (P = 0.0535);Gain of glycosylation at T286 (P = 0.0535);Gain of glycosylation at T286 (P = 0.0535);Gain of glycosylation at T286 (P = 0.0535);

MVP

0.95

MPC

0.44

ClinPred

0.93

GERP RS

5.1

Varity_R

0.91

gMVP

0.92

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