rs641153

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001710.6(CFB):​c.95G>A​(p.Arg32Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0989 in 1,612,870 control chromosomes in the GnomAD database, including 8,814 homozygotes. 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 Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R32W) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.12 ( 1207 hom., cov: 31)
Exomes 𝑓: 0.097 ( 7607 hom. )

Consequence

CFB
NM_001710.6 missense

Scores

18

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:18

Conservation

PhyloP100: -2.31
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]

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.001252532).
BP6
Variant 6-31946403-G-A is Benign according to our data. Variant chr6-31946403-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 16075.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-31946403-G-A is described in Lovd as [Benign].
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.187 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CFBNM_001710.6 linkc.95G>A p.Arg32Gln missense_variant Exon 2 of 18 ENST00000425368.7 NP_001701.2 P00751-1A0A1U9X7H8

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CFBENST00000425368.7 linkc.95G>A p.Arg32Gln missense_variant Exon 2 of 18 1 NM_001710.6 ENSP00000416561.2 P00751-1
ENSG00000244255ENST00000456570.5 linkc.1601G>A p.Arg534Gln missense_variant Exon 14 of 30 2 ENSP00000410815.1 B4E1Z4

Frequencies

GnomAD3 genomes
AF:
0.116
AC:
17666
AN:
152026
Hom.:
1209
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.190
Gnomad AMI
AF:
0.0461
Gnomad AMR
AF:
0.100
Gnomad ASJ
AF:
0.0574
Gnomad EAS
AF:
0.0624
Gnomad SAS
AF:
0.134
Gnomad FIN
AF:
0.0579
Gnomad MID
AF:
0.0886
Gnomad NFE
AF:
0.0902
Gnomad OTH
AF:
0.129
GnomAD2 exomes
AF:
0.0960
AC:
23669
AN:
246556
AF XY:
0.0987
show subpopulations
Gnomad AFR exome
AF:
0.191
Gnomad AMR exome
AF:
0.0702
Gnomad ASJ exome
AF:
0.0522
Gnomad EAS exome
AF:
0.0619
Gnomad FIN exome
AF:
0.0635
Gnomad NFE exome
AF:
0.0902
Gnomad OTH exome
AF:
0.103
GnomAD4 exome
AF:
0.0971
AC:
141800
AN:
1460726
Hom.:
7607
Cov.:
34
AF XY:
0.0979
AC XY:
71130
AN XY:
726674
show subpopulations
Gnomad4 AFR exome
AF:
0.188
AC:
6288
AN:
33480
Gnomad4 AMR exome
AF:
0.0734
AC:
3283
AN:
44720
Gnomad4 ASJ exome
AF:
0.0555
AC:
1451
AN:
26136
Gnomad4 EAS exome
AF:
0.0736
AC:
2923
AN:
39700
Gnomad4 SAS exome
AF:
0.149
AC:
12841
AN:
86258
Gnomad4 FIN exome
AF:
0.0650
AC:
3402
AN:
52310
Gnomad4 NFE exome
AF:
0.0942
AC:
104704
AN:
1111972
Gnomad4 Remaining exome
AF:
0.108
AC:
6511
AN:
60382
Heterozygous variant carriers
0
8281
16562
24844
33125
41406
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Exome Het
Exome Hom
Variant carriers
0
4022
8044
12066
16088
20110
<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:
0.116
AC:
17688
AN:
152144
Hom.:
1207
Cov.:
31
AF XY:
0.114
AC XY:
8486
AN XY:
74382
show subpopulations
Gnomad4 AFR
AF:
0.191
AC:
0.190613
AN:
0.190613
Gnomad4 AMR
AF:
0.100
AC:
0.100118
AN:
0.100118
Gnomad4 ASJ
AF:
0.0574
AC:
0.0574149
AN:
0.0574149
Gnomad4 EAS
AF:
0.0624
AC:
0.0623789
AN:
0.0623789
Gnomad4 SAS
AF:
0.133
AC:
0.133085
AN:
0.133085
Gnomad4 FIN
AF:
0.0579
AC:
0.0579245
AN:
0.0579245
Gnomad4 NFE
AF:
0.0902
AC:
0.0901738
AN:
0.0901738
Gnomad4 OTH
AF:
0.128
AC:
0.128436
AN:
0.128436
Heterozygous variant carriers
0
805
1610
2414
3219
4024
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Genome Het
Genome Hom
Variant carriers
0
182
364
546
728
910
<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:
0.0999
Hom.:
1336
Bravo
AF:
0.123
TwinsUK
AF:
0.0939
AC:
348
ALSPAC
AF:
0.102
AC:
394
ESP6500AA
AF:
0.177
AC:
535
ESP6500EA
AF:
0.0866
AC:
469
ExAC
AF:
0.0977
AC:
11498
Asia WGS
AF:
0.154
AC:
534
AN:
3478
EpiCase
AF:
0.0864
EpiControl
AF:
0.0878

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:18
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:3
Mar 28, 2016
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: Frequency -

-
Genome Diagnostics Laboratory, University Medical Center Utrecht
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

-
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

not provided Benign:3
Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Nov 10, 2018
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 28173125, 16518403, 19255449, 21555552, 16936732, 23112567, 18806293) -

Macular degeneration Benign:3
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Atypical hemolytic-uremic syndrome Benign:2
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

BF*FA/S Benign:1
Oct 30, 2017
OMIM
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Complement component 2 deficiency;C3809653:Age related macular degeneration 14 Benign:1
Apr 22, 2022
Fulgent Genetics, Fulgent Genetics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Age related macular degeneration 14 Benign:1
Aug 12, 2016
OMIM
Significance:protective
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Complement component 2 deficiency Benign:1
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Focal segmental glomerulosclerosis Benign:1
Sep 27, 2022
Genome Diagnostics Laboratory, The Hospital for Sick Children
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Atypical hemolytic-uremic syndrome with B factor anomaly Benign:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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 rule this variant out of causing disease. Therefore, this variant is classified as benign. -

Factor B fast/slow polymorphism Benign:1
Jan 01, 1994
OMIM
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.064
BayesDel_addAF
Benign
-0.58
T
BayesDel_noAF
Benign
-0.46
CADD
Benign
0.036
DANN
Benign
0.58
DEOGEN2
Benign
0.030
.;.;T
Eigen
Benign
-2.4
Eigen_PC
Benign
-2.4
FATHMM_MKL
Benign
0.046
N
LIST_S2
Benign
0.45
T;T;T
MetaRNN
Benign
0.0013
T;T;T
MetaSVM
Benign
-0.99
T
MutationAssessor
Benign
0.55
.;.;N
PrimateAI
Benign
0.19
T
PROVEAN
Benign
0.49
N;N;N
REVEL
Benign
0.066
Sift
Benign
0.70
T;T;T
Sift4G
Benign
0.31
T;T;T
Polyphen
0.0050
.;.;B
Vest4
0.033
MPC
0.54
ClinPred
0.0030
T
GERP RS
-10
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.018
gMVP
0.45
Mutation Taster
=99/1
polymorphism (auto)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.050
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.

Other links and lift over

dbSNP: rs641153; hg19: chr6-31914180; COSMIC: COSV54959257; COSMIC: COSV54959257; API