20-3234176-C-T

Variant names:

Variant summary

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

The NM_001174089.2(SLC4A11):c.430G>A(p.Ala144Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000322 in 1,613,792 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

SLC4A11
NM_001174089.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 1.29

Publications

12 publications found

Variant links:

Genes affected

SLC4A11 (HGNC:16438): (solute carrier family 4 member 11) This gene encodes a voltage-regulated, electrogenic sodium-coupled borate cotransporter that is essential for borate homeostasis, cell growth and cell proliferation. Mutations in this gene have been associated with a number of endothelial corneal dystrophies including recessive corneal endothelial dystrophy 2, corneal dystrophy and perceptive deafness, and Fuchs endothelial corneal dystrophy. Multiple transcript variants encoding different isoforms have been described. [provided by RefSeq, Mar 2010]

SLC4A11 Gene-Disease associations (from GenCC):

corneal dystrophy, Fuchs endothelial, 4
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P
congenital hereditary endothelial dystrophy of cornea
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
corneal dystrophy-perceptive deafness syndrome
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia
Fuchs' endothelial dystrophy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

SLC4A11 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC4A11	NM_001174089.2 link	c.430G>A	p.Ala144Thr	missense_variant	Exon 5 of 20	ENST00000642402.1	NP_001167560.1	Q8NBS3-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC4A11	ENST00000642402.1 link	c.430G>A	p.Ala144Thr	missense_variant	Exon 5 of 20		NM_001174089.2	ENSP00000493503.1		Q8NBS3-3

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000478

AC:

AN:

251298

AF XY:

0.0000515

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000301

AC:

AN:

1461618

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

727110

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33476

American (AMR)

AF:

0.000157

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.000554

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53314

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000899

AC:

AN:

1111880

Other (OTH)

AF:

0.0000662

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152174

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74320

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41438

American (AMR)

AF:

0.000327

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68016

Other (OTH)

AF:

0.000478

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 13, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: SLC4A11 c.478G>A (p.Ala160Thr) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4.8e-05 in 251298 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in SLC4A11 causing Corneal Dystrophy And Perceptive Deafness (4.8e-05 vs 0.0011), allowing no conclusion about variant significance. c.478G>A has been reported in the literature in at least one homozygous individual affected with endothelial dystrophy (e.g., Hemadevi_2008), however, the variant has also been reported in a homozygous unaffected individual (e.g., Jiao_2007). At least one publication reports experimental evidence evaluating an impact on protein function, finding that the variant leads to a ~30% reduction in expression of the mature protein and ~15% reduction in localization to the cell surface (e.g., Alka_2018). Two ClinVar submitters (evaluation after 2014) have cited the variant, and both laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

not provided

Uncertain:1

Mar 02, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 160 of the SLC4A11 protein (p.Ala160Thr). This variant is present in population databases (rs752287261, gnomAD 0.02%). This missense change has been observed in individuals with corneal dystrophy (PMID: 16825429, 18474783). ClinVar contains an entry for this variant (Variation ID: 225475). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

Congenital hereditary endothelial dystrophy of cornea

Uncertain:1

Mar 18, 2016

Soonchunhyang University Bucheon Hospital, Soonchunhyang University Medical Center

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:reference population

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.077

BayesDel_addAF

Benign

-0.086

BayesDel_noAF

Benign

-0.10

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.12

T;.;.;.;.;.;.

Eigen

Benign

-0.66

Eigen_PC

Benign

-0.81

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.77

T;T;.;T;T;T;T

M_CAP

Benign

0.045

MetaRNN

Uncertain

0.49

T;T;T;T;T;T;T

MetaSVM

Benign

-0.71

MutationAssessor

Benign

1.3

L;.;.;.;.;.;.

PhyloP100

1.3

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.90

N;N;.;.;.;.;N

REVEL

Uncertain

0.50

Sift

Benign

0.43

T;T;.;.;.;.;T

Sift4G

Benign

0.41

T;T;.;.;.;.;T

Polyphen

0.87

P;.;.;.;.;.;.

Vest4

0.14

MutPred

0.74

Gain of phosphorylation at A160 (P = 0.0086);.;.;.;.;.;.;

MVP

0.71

MPC

0.32

ClinPred

0.037

GERP RS

-0.81

Varity_R

0.069

gMVP

0.44

Mutation Taster

=3/97

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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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20-3234176-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over