Genetic Variant NM_001710.6:c.118G>C (chr6-31946426-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001710.6(CFB):c.118G>C(p.Glu40Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 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. E40K) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Consequence

CFB
NM_001710.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.85

Publications

0 publications found

Variant links:

Genes affected

CFB (HGNC:1037): (complement factor B) This gene encodes complement factor B, a component of the alternative pathway of complement activation. Factor B circulates in the blood as a single chain polypeptide. Upon activation of the alternative pathway, it is cleaved by complement factor D yielding the noncatalytic chain Ba and the catalytic subunit Bb. The active subunit Bb is a serine protease which associates with C3b to form the alternative pathway C3 convertase. Bb is involved in the proliferation of preactivated B lymphocytes, while Ba inhibits their proliferation. This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. This cluster includes several genes involved in regulation of the immune reaction. Polymorphisms in this gene are associated with a reduced risk of age-related macular degeneration. The polyadenylation site of this gene is 421 bp from the 5' end of the gene for complement component 2. [provided by RefSeq, Jul 2008]

CFB Gene-Disease associations (from GenCC):

atypical hemolytic-uremic syndrome with B factor anomaly
Inheritance: AD, Unknown Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)
complement factor b deficiency
Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
C3 glomerulonephritis
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

CFB links:

ENSG00000244255 (HGNC:):

ENSG00000244255 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2427735).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001710.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CFB	NM_001710.6	MANE Select	c.118G>C	p.Glu40Gln	missense	Exon 2 of 18	NP_001701.2	P00751-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CFB	ENST00000425368.7	TSL:1 MANE Select	c.118G>C	p.Glu40Gln	missense	Exon 2 of 18	ENSP00000416561.2	P00751-1
ENSG00000244255	ENST00000456570.5	TSL:2	c.1624G>C	p.Glu542Gln	missense	Exon 14 of 30	ENSP00000410815.1	B4E1Z4
CFB	ENST00000885733.1		c.118G>C	p.Glu40Gln	missense	Exon 2 of 18	ENSP00000555792.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.029

BayesDel_noAF

Benign

-0.28

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.089

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.046

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.80

M_CAP

Benign

0.018

MetaRNN

Benign

0.24

MetaSVM

Benign

-0.64

MutationAssessor

Benign

1.5

PhyloP100

1.9

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.1

REVEL

Benign

0.12

Sift

Benign

0.99

Sift4G

Benign

0.33

Polyphen

0.027

Vest4

0.12

MutPred

0.48

Gain of loop (P = 0.1069)

MVP

0.37

MPC

0.48

ClinPred

0.44

GERP RS

3.5

PromoterAI

-0.078

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.23

gMVP

0.60

Mutation Taster

=78/22

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over