20-3228337-A-G

Position:

chr20-3228337-A-G

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PP3_StrongPP5_Very_Strong

The NM_001174089.2(SLC4A11):c.2480T>C(p.Leu827Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000446 in 1,612,944 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

SLC4A11
NM_001174089.2 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:6

Conservation

PhyloP100: 7.44

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 links:

SLC4A11 (HGNC:):

SLC4A11 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM1

In a transmembrane_region Helical (size 16) in uniprot entity S4A11_HUMAN there are 5 pathogenic changes around while only 1 benign (83%) in NM_001174089.2

PP3

MetaRNN computational evidence supports a deleterious effect, 0.979

PP5

Variant 20-3228337-A-G is Pathogenic according to our data. Variant chr20-3228337-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1316.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr20-3228337-A-G is described in Lovd as [Pathogenic]. Variant chr20-3228337-A-G is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC4A11	NM_001174089.2 linkuse as main transcript	c.2480T>C	p.Leu827Pro	missense_variant	19/20	ENST00000642402.1	NP_001167560.1	Q8NBS3-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC4A11	ENST00000642402.1 linkuse as main transcript	c.2480T>C	p.Leu827Pro	missense_variant	19/20		NM_001174089.2	ENSP00000493503.1		Q8NBS3-3

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152058

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251080

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135834

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000445

AC:

AN:

1460886

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

726780

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000190

Gnomad4 NFE exome

AF:

0.0000558

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152058

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74274

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000158

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Corneal dystrophy-perceptive deafness syndrome

Pathogenic:3

Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Jan 24, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Apr 12, 2023	Variant summary: SLC4A11 c.2528T>C (p.Leu843Pro) results in a non-conservative amino acid change located in the transmembrane region 14 (TM14) (Badior_2016) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.6e-05 in 251080 control chromosomes (gnomAD). c.2528T>C has been reported in the literature in multiple compound heterozygous and homozygous individuals affected with Corneal Dystrophy And Perceptive Deafness (Desir_2007, Hand_2016). In addition, this variant was co-segregated with disease in one family (Hand_2016). These data indicate that the variant is very likely to be associated with disease. At least two functional studies reported this variant failed to reach the cell surface in transfected cells (Loganathan_2014, Alka_2018). Four ClinVar submitters (evaluation after 2014) cite this variant as pathogenic (n=3) and likely pathogenic (n=1). Based on the evidence outlined above, the variant was classified as pathogenic. -
Pathogenic, no assertion criteria provided	literature only	OMIM	May 01, 2007	- -

not provided

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Apr 12, 2017	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Sep 20, 2023	For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects SLC4A11 function (PMID: 24916015, 29327391). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SLC4A11 protein function. ClinVar contains an entry for this variant (Variation ID: 1316). This missense change has been observed in individual(s) with Harboyan syndrome (PMID: 17220209, 27057589). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs121909394, gnomAD 0.005%). This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 843 of the SLC4A11 protein (p.Leu843Pro). -

Congenital hereditary endothelial dystrophy of cornea;C1857572:Corneal dystrophy-perceptive deafness syndrome;C2750450:Corneal dystrophy, Fuchs endothelial, 4

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Mar 26, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.93

BayesDel_addAF

Pathogenic

0.38

BayesDel_noAF

Pathogenic

0.38

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.72

D;.;.;.;.;.;.

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.96

D;D;.;T;D;D;D

M_CAP

Pathogenic

0.55

MetaRNN

Pathogenic

0.98

D;D;D;D;D;D;D

MetaSVM

Uncertain

0.70

MutationAssessor

Uncertain

2.7

M;.;.;.;.;.;.

PrimateAI

Uncertain

0.77

PROVEAN

Pathogenic

-6.1

D;D;.;.;.;.;D

REVEL

Pathogenic

0.89

Sift

Uncertain

0.0010

D;D;.;.;.;.;D

Sift4G

Pathogenic

0.0010

D;D;.;.;.;.;D

Polyphen

0.34

B;.;.;.;.;.;.

Vest4

0.93

MutPred

0.89

Gain of catalytic residue at L843 (P = 0.007);.;.;.;.;.;.;

MVP

0.94

MPC

0.86

ClinPred

0.98

GERP RS

5.4

Varity_R

0.93

gMVP

0.99

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