chr4-109740984-T-A
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Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_000204.5(CFI):c.1661A>T(p.Glu554Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000465 in 1,614,078 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000050 ( 0 hom. )
Consequence
CFI
NM_000204.5 missense
NM_000204.5 missense
Scores
1
10
8
Clinical Significance
Conservation
PhyloP100: 1.36
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CFI | NM_000204.5 | c.1661A>T | p.Glu554Val | missense_variant | 13/13 | ENST00000394634.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CFI | ENST00000394634.7 | c.1661A>T | p.Glu554Val | missense_variant | 13/13 | 1 | NM_000204.5 | P2 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152226Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251298Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135804
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GnomAD4 exome AF: 0.0000499 AC: 73AN: 1461852Hom.: 0 Cov.: 33 AF XY: 0.0000426 AC XY: 31AN XY: 727228
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GnomAD4 genome AF: 0.0000131 AC: 2AN: 152226Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74368
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Oct 14, 2023 | This sequence change replaces glutamic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 554 of the CFI protein (p.Glu554Val). This variant is present in population databases (rs754572081, gnomAD 0.002%). This missense change has been observed in individual(s) with CFI-related conditions (PMID: 20595690, 24036952, 32510551). ClinVar contains an entry for this variant (Variation ID: 347145). 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 expected to disrupt CFI protein function. Studies have shown that this missense change alters CFI gene expression (PMID: 32510551). 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Mayo Clinic Laboratories, Mayo Clinic | Dec 11, 2019 | - - |
Atypical hemolytic-uremic syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
CADD
Benign
DANN
Uncertain
DEOGEN2
Uncertain
D;D;.
Eigen
Uncertain
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Uncertain
D;D;D
M_CAP
Uncertain
D
MetaRNN
Uncertain
T;T;T
MetaSVM
Uncertain
T
MutationAssessor
Benign
N;.;.
MutationTaster
Benign
N;N;N
PrimateAI
Benign
T
PROVEAN
Uncertain
D;D;D
REVEL
Uncertain
Sift
Benign
D;D;D
Sift4G
Benign
T;T;T
Polyphen
D;D;P
Vest4
MutPred
0.64
.;Loss of solvent accessibility (P = 0.0052);.;
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at