20-22582206-C-G

Position:

chr20-22582206-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_021784.5(FOXA2):c.1036G>C(p.Gly346Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000287 in 1,393,214 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000029 ( 0 hom. )

Consequence

FOXA2
NM_021784.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.59

Variant links:

Genes affected

FOXA2 (HGNC:5022): (forkhead box A2) This gene encodes a member of the forkhead class of DNA-binding proteins. These hepatocyte nuclear factors are transcriptional activators for liver-specific genes such as albumin and transthyretin, and they also interact with chromatin. Similar family members in mice have roles in the regulation of metabolism and in the differentiation of the pancreas and liver. This gene has been linked to sporadic cases of maturity-onset diabetes of the young. Transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Oct 2008]

FOXA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17699257).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
FOXA2	NM_021784.5 linkuse as main transcript	c.1036G>C	p.Gly346Arg	missense_variant	2/2	ENST00000419308.7	NP_068556.2
FOXA2	NM_153675.3 linkuse as main transcript	c.1018G>C	p.Gly340Arg	missense_variant	3/3		NP_710141.1
FOXA2	XM_047440133.1 linkuse as main transcript	c.1018G>C	p.Gly340Arg	missense_variant	3/3		XP_047296089.1
FOXA2	XM_047440134.1 linkuse as main transcript	c.928G>C	p.Gly310Arg	missense_variant	2/2		XP_047296090.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FOXA2	ENST00000419308.7 linkuse as main transcript	c.1036G>C	p.Gly346Arg	missense_variant	2/2	1	NM_021784.5	ENSP00000400341	P4	Q9Y261-2
FOXA2	ENST00000377115.4 linkuse as main transcript	c.1018G>C	p.Gly340Arg	missense_variant	3/3	1		ENSP00000366319	A1	Q9Y261-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000690

AC:

AN:

144930

Hom.:

AF XY:

0.0000129

AC XY:

AN XY:

77312

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000909

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000287

AC:

AN:

1393214

Hom.:

Cov.:

AF XY:

0.00000291

AC XY:

AN XY:

686734

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000280

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000279

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000106

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 27, 2022

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. This variant has not been reported in the literature in individuals affected with FOXA2-related conditions. This variant is present in population databases (rs775402453, gnomAD 0.01%). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 346 of the FOXA2 protein (p.Gly346Arg). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Benign

0.79

DEOGEN2

Benign

0.30

.;T

Eigen

Benign

-0.76

Eigen_PC

Benign

-0.65

FATHMM_MKL

Uncertain

0.77

LIST_S2

Benign

0.65

T;T

M_CAP

Pathogenic

0.51

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.47

MutationAssessor

Benign

1.1

.;L

MutationTaster

Benign

0.50

N;N;N

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-0.61

.;N

REVEL

Benign

0.21

Sift

Benign

0.54

.;T

Sift4G

Benign

0.65

T;T

Polyphen

0.0

.;B

Vest4

0.22

MutPred

0.27

.;Gain of solvent accessibility (P = 0.019);

MVP

0.57

ClinPred

0.039

GERP RS

3.3

Varity_R

0.17

gMVP

0.50

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over