4-109749594-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_000204.5(CFI):c.949C>T(p.Arg317Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000698 in 1,590,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R317Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000070 ( 0 hom. )

Consequence

CFI
NM_000204.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3O:1

Conservation

PhyloP100: -0.187

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 was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.10949057).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CFI	NM_000204.5 link	c.949C>T	p.Arg317Trp	missense_variant	Exon 9 of 13	ENST00000394634.7	NP_000195.3	P05156A8K3L0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CFI	ENST00000394634.7 link	c.949C>T	p.Arg317Trp	missense_variant	Exon 9 of 13	1	NM_000204.5	ENSP00000378130.2		P05156
ENSG00000285330	ENST00000645635.1 link	c.949C>T	p.Arg317Trp	missense_variant	Exon 9 of 15			ENSP00000493607.1		A0A2R8Y3M9

Frequencies

GnomAD3 genomes

AF:

0.0000658

AC:

AN:

151898

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000284

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000876

AC:

AN:

251190

AF XY:

0.0000810

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.0000927

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000702

AC:

101

AN:

1438574

Hom.:

Cov.:

AF XY:

0.0000711

AC XY:

AN XY:

717024

show subpopulations

Gnomad4 AFR exome

AF:

0.0000303

AC:

AN:

32966

Gnomad4 AMR exome

AF:

0.00

AC:

AN:

44692

Gnomad4 ASJ exome

AF:

0.0000385

AC:

AN:

25972

Gnomad4 EAS exome

AF:

0.0000505

AC:

AN:

39570

Gnomad4 SAS exome

AF:

0.0000466

AC:

AN:

85808

Gnomad4 FIN exome

AF:

0.0000376

AC:

AN:

53252

Gnomad4 NFE exome

AF:

0.0000797

AC:

AN:

1090946

Gnomad4 Remaining exome

AF:

0.0000671

AC:

AN:

59636

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

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:

0.0000658

AC:

AN:

152016

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74292

show subpopulations

Gnomad4 AFR

AF:

0.00

AC:

AN:

Gnomad4 AMR

AF:

0.0000655

AC:

0.0000655394

AN:

0.0000655394

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.00

AC:

AN:

Gnomad4 SAS

AF:

0.00

AC:

AN:

Gnomad4 FIN

AF:

0.000284

AC:

0.000284306

AN:

0.000284306

Gnomad4 NFE

AF:

0.0000735

AC:

0.0000735489

AN:

0.0000735489

Gnomad4 OTH

AF:

0.00

AC:

AN:

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

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:

0.000130

Hom.:

Bravo

AF:

0.0000680

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000988

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

May 20, 2021

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 17, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 317 of the CFI protein (p.Arg317Trp). This variant is present in population databases (rs121964917, gnomAD 0.02%). This missense change has been observed in individual(s) with atypical hemolytic uremic syndrome (PMID: 16621965, 34169201). This variant is also known as R299W. ClinVar contains an entry for this variant (Variation ID: 12125). 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 not expected to disrupt CFI protein function with a negative predictive value of 80%. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on CFI function (PMID: 17597211, 19877009). 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

Jul 14, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Atypical hemolytic-uremic syndrome with I factor anomaly

Other:1

Aug 15, 2006

OMIM

Significance:risk factor

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.049

BayesDel_noAF

Uncertain

-0.070

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.36

.;T;T;T;.

Eigen

Benign

-0.94

Eigen_PC

Benign

-0.88

FATHMM_MKL

Benign

0.025

LIST_S2

Benign

0.80

T;T;T;T;T

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.11

T;T;T;T;T

MetaSVM

Benign

-0.55

MutationAssessor

Uncertain

2.0

.;M;.;.;.

PrimateAI

Benign

0.21

PROVEAN

Uncertain

-2.5

.;D;D;.;D

REVEL

Uncertain

0.49

Sift

Benign

0.13

.;T;T;.;T

Sift4G

Benign

0.19

.;T;T;T;T

Polyphen

0.039, 0.041, 0.14

.;B;B;.;B

Vest4

0.17, 0.20, 0.22, 0.20

MVP

0.57

MPC

0.074

ClinPred

0.033

GERP RS

0.17

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.35

gMVP

0.76

Mutation Taster

=30/70

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

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