1-196652166-G-A

Variant names:

Variant summary

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

The NM_000186.4(CFH):c.49G>A(p.Val17Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000481 in 1,456,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict 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. V17G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

CFH
NM_000186.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.134

Publications

0 publications found

Variant links:

Genes affected

CFH (HGNC:4883): (complement factor H) This gene is a member of the Regulator of Complement Activation (RCA) gene cluster and encodes a protein with twenty short consensus repeat (SCR) domains. This protein is secreted into the bloodstream and has an essential role in the regulation of complement activation, restricting this innate defense mechanism to microbial infections. Mutations in this gene have been associated with hemolytic-uremic syndrome (HUS) and chronic hypocomplementemic nephropathy. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Oct 2011]

CFH Gene-Disease associations (from GenCC):

primary membranoproliferative glomerulonephritis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
atypical hemolytic-uremic syndrome
Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
hemolytic uremic syndrome, atypical, susceptibility to, 1
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
complement factor H deficiency
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
basal laminar drusen
Inheritance: Unknown, AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
Doyne honeycomb retinal dystrophy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
dense deposit disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CFH links:

ENSG00000289697 (HGNC:):

ENSG00000289697 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=0.1090464).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CFH	NM_000186.4 link	c.49G>A	p.Val17Ile	missense_variant	Exon 1 of 22	ENST00000367429.9	NP_000177.2	P08603A0A024R962
CFH	NM_001014975.3 link	c.49G>A	p.Val17Ile	missense_variant	Exon 1 of 10		NP_001014975.1	A0A0D9SG88

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CFH	ENST00000367429.9 link	c.49G>A	p.Val17Ile	missense_variant	Exon 1 of 22	1	NM_000186.4	ENSP00000356399.4		P08603
ENSG00000289697	ENST00000696032.1 link	c.49G>A	p.Val17Ile	missense_variant	Exon 1 of 27			ENSP00000512341.1		A0A8Q3SIA1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000481

AC:

AN:

1456590

Hom.:

Cov.:

AF XY:

0.00000414

AC XY:

AN XY:

724970

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33378

American (AMR)

AF:

0.00

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26100

East Asian (EAS)

AF:

0.00

AC:

AN:

39632

South Asian (SAS)

AF:

0.00

AC:

AN:

86150

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53324

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5750

European-Non Finnish (NFE)

AF:

0.00000632

AC:

AN:

1107336

Other (OTH)

AF:

0.00

AC:

AN:

60218

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

GnomAD4 genome

Cov.:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Factor H deficiency;C0730295:Basal laminar drusen;C1853147:Age related macular degeneration 4;C2749604:Hemolytic uremic syndrome, atypical, susceptibility to, 1

Uncertain:1

Jan 20, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Jul 14, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The isoleucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with CFH-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 17 of the CFH protein (p.Val17Ile). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.099

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.67

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.0082

.;T;.

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.28

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.68

T;T;T

M_CAP

Benign

0.0069

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Benign

-1.0

PhyloP100

0.13

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.34

N;.;N

REVEL

Benign

0.019

Sift

Benign

0.27

T;.;T

Sift4G

Uncertain

0.059

T;T;T

Polyphen

0.13

.;.;B

Vest4

0.050

MutPred

0.44

Loss of catalytic residue at V17 (P = 0.0045);Loss of catalytic residue at V17 (P = 0.0045);Loss of catalytic residue at V17 (P = 0.0045);

MVP

0.30

MPC

0.11

ClinPred

0.10

GERP RS

1.9

PromoterAI

-0.080

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.43

Mutation Taster

=97/3

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over