6-1611496-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP2BP4

The NM_001453.3(FOXC1):c.1051G>C(p.Gly351Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/22 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. G351S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FOXC1
NM_001453.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.97

Publications

0 publications found

Variant links:

Genes affected

FOXC1 (HGNC:3800): (forkhead box C1) This gene belongs to the forkhead family of transcription factors which is characterized by a distinct DNA-binding forkhead domain. The specific function of this gene has not yet been determined; however, it has been shown to play a role in the regulation of embryonic and ocular development. Mutations in this gene cause various glaucoma phenotypes including primary congenital glaucoma, autosomal dominant iridogoniodysgenesis anomaly, and Axenfeld-Rieger anomaly. [provided by RefSeq, Jul 2008]

FOXC1 Gene-Disease associations (from GenCC):

anterior segment dysgenesis 3
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
Axenfeld-Rieger syndrome type 3
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
aniridia
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
Axenfeld anomaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Axenfeld-Rieger syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
isolated aniridia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Peters anomaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Rieger anomaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

FOXC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 31 curated pathogenic missense variants (we use a threshold of 10). The gene has 5 curated benign missense variants. Trascript score misZ: -3.6526 (below the threshold of 3.09). GenCC associations: The gene is linked to Rieger anomaly, Axenfeld-Rieger syndrome type 3, anterior segment dysgenesis 3, isolated aniridia, Axenfeld-Rieger syndrome, Axenfeld anomaly, aniridia, Peters anomaly.

BP4

Computational evidence support a benign effect (MetaRNN=0.34612402).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FOXC1	NM_001453.3 link	c.1051G>C	p.Gly351Arg	missense_variant	Exon 1 of 1	ENST00000645831.2	NP_001444.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FOXC1	ENST00000645831.2 link	c.1051G>C	p.Gly351Arg	missense_variant	Exon 1 of 1		NM_001453.3	ENSP00000493906.1		Q12948

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1224524

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

602120

African (AFR)

AF:

0.00

AC:

AN:

24620

American (AMR)

AF:

0.00

AC:

AN:

21874

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20114

East Asian (EAS)

AF:

0.00

AC:

AN:

24714

South Asian (SAS)

AF:

0.00

AC:

AN:

60306

European-Finnish (FIN)

AF:

0.00

AC:

AN:

29090

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3462

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

991588

Other (OTH)

AF:

0.00

AC:

AN:

48756

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Axenfeld-Rieger syndrome type 3;C5975707:Anterior segment dysgenesis 3

Uncertain:1

Feb 13, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Axenfeld-Rieger syndrome type 3

Uncertain:1

Feb 13, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with a FOXC1-related disease. This sequence change replaces glycine with arginine at codon 351 of the FOXC1 protein (p.Gly351Arg). The glycine residue is moderately conserved and there is a moderate physicochemical difference between glycine and arginine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Benign

-0.026

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.41

T;T

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.45

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.59

.;T

M_CAP

Pathogenic

0.80

MetaRNN

Benign

0.35

T;T

MetaSVM

Benign

-0.68

MutationAssessor

Benign

0.90

L;L

PhyloP100

4.0

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-1.6

N;.

REVEL

Benign

0.26

Sift

Benign

0.16

T;.

Sift4G

Uncertain

0.041

D;.

Polyphen

0.43

B;B

Vest4

0.073

MutPred

0.26

Gain of helix (P = 0.062);Gain of helix (P = 0.062);

MVP

0.84

ClinPred

0.73

GERP RS

0.95

Varity_R

0.091

gMVP

0.28

Mutation Taster

=88/12

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over