rs776491901

Variant names:

• chr4-109740929-A-C
• rs776491901
• NM_000204.5:c.1716T>G

Your query was ambiguous. Multiple possible variants found:

• chr4-109740929-A-C
• chr4-109740929-A-G
• chr4-109740929-A-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000204.5(CFI):​c.1716T>G​(p.His572Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. H572H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CFI NM_000204.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.834
• Publications: 0 publications found

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]

CFI Gene-Disease associations (from GenCC):

• atypical hemolytic-uremic syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• atypical hemolytic-uremic syndrome with I factor anomaly

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• complement factor I deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• C3 glomerulonephritis

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen
• Doyne honeycomb retinal dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• age related macular degeneration 13

  Inheritance: Unknown, AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ENSG00000285330 (HGNC:):

ACMG classification

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=0.22203758).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000204.5. 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
	CFI	NM_000204.5	MANE Select	c.1716T>G	p.His572Gln	missense	Exon 13 of 13	NP_000195.3	P05156
	CFI	NM_001318057.2		c.1740T>G	p.His580Gln	missense	Exon 14 of 14	NP_001304986.2	E7ETH0
	CFI	NM_001440986.1		c.1737T>G	p.His579Gln	missense	Exon 14 of 14	NP_001427915.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CFI	ENST00000394634.7	TSL:1 MANE Select	c.1716T>G	p.His572Gln	missense	Exon 13 of 13	ENSP00000378130.2	P05156
	ENSG00000285330	ENST00000645635.1		c.1534+1562T>G		intron	N/A	ENSP00000493607.1	A0A2R8Y3M9
	CFI	ENST00000963332.1		c.1806T>G	p.His602Gln	missense	Exon 14 of 14	ENSP00000633391.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461818 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727224

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111954

Other (OTH) AF: 0.00 AC: 0 AN: 60392

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000203476), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Uncertain	0.035	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	5.5
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.45	T
Eigen	Benign	-0.74
Eigen_PC	Benign	-0.84
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.61	T
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.22	T
MetaSVM	Uncertain	0.035	D
MutationAssessor	Benign	-0.11	N
PhyloP100		-0.83
PrimateAI	Benign	0.48	T
PROVEAN	Pathogenic	-5.8	D
REVEL	Uncertain	0.39
Sift	Benign	0.14	T
Sift4G	Benign	0.11	T
Polyphen		0.65	P
Vest4		0.21
MutPred		0.42		Loss of methylation at R583 (P = 0.2087)
MVP		0.74
MPC		0.17
ClinPred		0.92	D
GERP RS		-2.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.74
gMVP		0.68
Mutation Taster		=62/38	polymorphism

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

Other links and lift over

dbSNP: rs776491901; hg19: chr4-110662085;