Gene Gene information from NCBI Gene database.
Entrez ID 3426
Gene name Complement factor I
Gene symbol CFI
Synonyms (NCBI Gene)
AHUS3ARMD13C3BINAC3b-INAFIIFKAF
Chromosome 4
Chromosome location 4q25
Summary 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 hete
SNPs SNP information provided by dbSNP.
19
SNP ID Visualize variation Clinical significance Consequence
rs112534524 C>G,T Pathogenic, likely-benign Missense variant, coding sequence variant, non coding transcript variant
rs121964912 T>A,C Pathogenic Missense variant, coding sequence variant, non coding transcript variant, intron variant
rs121964913 G>A,T Risk-factor Synonymous variant, coding sequence variant, stop gained, non coding transcript variant, intron variant
rs121964914 T>A,C Risk-factor Coding sequence variant, genic downstream transcript variant, missense variant, downstream transcript variant, non coding transcript variant, intron variant
rs121964915 C>A,T Risk-factor Coding sequence variant, genic downstream transcript variant, stop gained, missense variant, downstream transcript variant, non coding transcript variant, intron variant
miRNA miRNA information provided by mirtarbase database.
3
miRTarBase ID miRNA Experiments Reference
MIRT018438 hsa-miR-335-5p Microarray 18185580
MIRT025158 hsa-miR-181a-5p Microarray 17612493
MIRT029753 hsa-miR-26b-5p Microarray 19088304
Transcription factors Transcription factors information provided by TRRUST V2 database.
2
Transcription factor Regulation Reference
NFKB1 Activation 10630630
RELA Activation 10630630
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
18
GO ID Ontology Definition Evidence Reference
GO:0002376 Process Immune system process IEA
GO:0004252 Function Serine-type endopeptidase activity IEA
GO:0004252 Function Serine-type endopeptidase activity TAS 2956252, 8604219
GO:0005515 Function Protein binding IPI 16237761
GO:0005576 Component Extracellular region IEA
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
217030 5394 ENSG00000205403
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P05156
Protein name Complement factor I (EC 3.4.21.45) (C3B/C4B inactivator) [Cleaved into: Complement factor I heavy chain; Complement factor I light chain]
Protein function Trypsin-like serine protease that plays an essential role in regulating the immune response by controlling all complement pathways. Inhibits these pathways by cleaving three peptide bonds in the alpha-chain of C3b and two bonds in the alpha-chai
PDB 2XRC , 5O32
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF00530 SRCR 117 215 Scavenger receptor cysteine-rich domain Domain
PF00057 Ldl_recept_a 223 256 Low-density lipoprotein receptor domain class A Repeat
PF00057 Ldl_recept_a 257 293 Low-density lipoprotein receptor domain class A Repeat
PF00089 Trypsin 340 569 Trypsin Domain
Tissue specificity TISSUE SPECIFICITY: Expressed in the liver by hepatocytes (PubMed:6327681). Also present in other cells such as monocytes, fibroblasts or keratinocytes (PubMed:17320177, PubMed:6444659). {ECO:0000269|PubMed:17320177, ECO:0000269|PubMed:6327681, ECO:000026
Sequence
Sequence length 583
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Complement and coagulation cascades
Staphylococcus aureus infection
  Regulation of Complement cascade
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
50
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Age related macular degeneration 13 Likely pathogenic; Pathogenic rs368555424, rs2126178088, rs2126214430, rs1425827135, rs199688124, rs757053954, rs758049059, rs886043418, rs121964913, rs752671716, rs368615806 RCV002504628
RCV001535876
RCV001535832
RCV005023273
RCV002507693
View all (6 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Atypical hemolytic-uremic syndrome Likely pathogenic; Pathogenic rs368555424, rs2545375332, rs886043418, rs1303038263, rs1381469349, rs759676430 RCV002294457
RCV005864639
RCV002294216
RCV005864676
RCV005864677
View all (1 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Atypical hemolytic-uremic syndrome with I factor anomaly Likely pathogenic; Pathogenic rs368555424, rs2126178088, rs2126214430, rs1425827135, rs199688124, rs757053954, rs758049059, rs886043418, rs121964913, rs121964914, rs121964915, rs2545377389, rs2545457659, rs2545358074, rs750850949
View all (3 more)
RCV002504628
RCV001535876
RCV001535832
RCV005023273
RCV002507693
View all (13 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
CFI-related disorder Likely pathogenic; Pathogenic rs1723935867, rs368555424, rs1352826089, rs760688154, rs199688124, rs752767269, rs1445308792, rs1339444612, rs1478645822, rs758049059, rs886043418, rs121964913, rs121964914, rs121964915, rs1560546604
View all (4 more)
RCV004528560
RCV005864563
RCV005864569
RCV005864570
RCV004542199
View all (14 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acute myeloid leukemia Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Adrenocortical carcinoma, hereditary Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Afibrinogenemia Uncertain significance ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ATRIAL FIBRILLATION GWAS catalog
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Adenocarcinoma of lung (disorder) Lung adenocarcinoma BEFREE 29378962
★☆☆☆☆
Found in Text Mining only
Afibrinogenemia Afibrinogenemia BEFREE 25988862
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Age related macular degeneration Age-related macular degeneration LHGDN 18685559
★☆☆☆☆
Found in Text Mining only
Age related macular degeneration Age-related macular degeneration BEFREE 19661236, 20385819, 21139980, 21906714, 22133792, 22694956, 23685748, 24036952, 25352734, 25788521, 25986072, 26312598, 26501415, 26742632, 26765636
View all (8 more)
★☆☆☆☆
Found in Text Mining only
Age related macular degeneration Age-related macular degeneration CTD_human_DG 23685748, 24036952, 26691988
★☆☆☆☆
Found in Text Mining only
Age related macular degeneration Age-related macular degeneration GWASCAT_DG 26691988
★☆☆☆☆
Found in Text Mining only
Alternating hemiplegia of childhood Alternating hemiplegia of childhood Pubtator 25188723 Associate
★☆☆☆☆
Found in Text Mining only
Androgen Insensitivity Syndrome Androgen insensitivity syndrome Pubtator 31671693 Associate
★☆☆☆☆
Found in Text Mining only
Anxiety Anxiety Disorder BEFREE 28809398, 31498818
★☆☆☆☆
Found in Text Mining only
Anxiety Disorders Anxiety Disorder BEFREE 28809398, 31498818
★☆☆☆☆
Found in Text Mining only