rs267607066

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 5P and 1B. PM1PP3_ModeratePP5BS2_Supporting

The NM_001174089.2(SLC4A11):​c.2213C>T​(p.Thr738Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000198 in 1,612,834 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

SLC4A11
NM_001174089.2 missense

Scores

13
5
1

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:1

Conservation

PhyloP100: 6.92
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1
In a transmembrane_region Helical (size 24) in uniprot entity S4A11_HUMAN there are 5 pathogenic changes around while only 0 benign (100%) in NM_001174089.2
PP3
MetaRNN computational evidence supports a deleterious effect, 0.925
PP5
Variant 20-3228687-G-A is Pathogenic according to our data. Variant chr20-3228687-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1321.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1}. Variant chr20-3228687-G-A is described in Lovd as [Pathogenic].
BS2
High AC in GnomAd4 at 7 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC4A11NM_001174089.2 linkc.2213C>T p.Thr738Met missense_variant Exon 18 of 20 ENST00000642402.1 NP_001167560.1 Q8NBS3-3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC4A11ENST00000642402.1 linkc.2213C>T p.Thr738Met missense_variant Exon 18 of 20 NM_001174089.2 ENSP00000493503.1 Q8NBS3-3

Frequencies

GnomAD3 genomes
AF:
0.0000460
AC:
7
AN:
152182
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000321
AC:
8
AN:
249034
Hom.:
0
AF XY:
0.0000296
AC XY:
4
AN XY:
135158
show subpopulations
Gnomad AFR exome
AF:
0.000250
Gnomad AMR exome
AF:
0.0000290
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000546
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000178
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000171
AC:
25
AN:
1460652
Hom.:
0
Cov.:
42
AF XY:
0.0000151
AC XY:
11
AN XY:
726640
show subpopulations
Gnomad4 AFR exome
AF:
0.0000597
Gnomad4 AMR exome
AF:
0.0000447
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000144
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.0000460
AC:
7
AN:
152182
Hom.:
0
Cov.:
31
AF XY:
0.0000404
AC XY:
3
AN XY:
74324
show subpopulations
Gnomad4 AFR
AF:
0.0000483
Gnomad4 AMR
AF:
0.0000654
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000588
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000515
Hom.:
0
Bravo
AF:
0.0000340
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.0000412
AC:
5
EpiCase
AF:
0.0000545
EpiControl
AF:
0.00

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:2Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Congenital hereditary endothelial dystrophy of cornea;C1857572:Corneal dystrophy-perceptive deafness syndrome;C2750450:Corneal dystrophy, Fuchs endothelial, 4 Pathogenic:1
Jan 16, 2024
Fulgent Genetics, Fulgent Genetics
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Corneal dystrophy, Fuchs endothelial, 4 Pathogenic:1
Jul 01, 2006
OMIM
Significance: Pathogenic
Review Status: no assertion criteria provided
Collection Method: literature only

- -

not specified Uncertain:1
Oct 14, 2024
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.2261C>T (p.Thr754Met) results in a non-conservative amino acid change located in the transmembrane domain (IPR011531) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.2e-05 in 249034 control chromosomes.The variant, c.2261C>T, has been reported in the literature in heterozygous state in an individual, who was affected with (dominant) late-onset Fuchs endothelial corneal dystrophy (FECD) (Vithana_2008). The authors of this report also reported experimental evidence evaluating an impact on protein function in successive in vitro functional studies, and found that the variant reduced the fraction of mature protein (~35-50% compared to normal), and caused impaired cell surface localization (Vithana_2008, Vilas_2012, Alka_2018). In addition, when the effect of the variant protein on WT was tested (in a co-expression system), the variant was capable of forming a dimer with the WT protein, and partially impaired its maturation to the plasma membrane, consistent with the dominant inheritance of FECD (Vilas_2012). The following publications have been ascertained in the context of this evaluation (PMID: 29327391, 22072594, 18024964). ClinVar contains an entry for this variant (Variation ID: 1321). Based on the evidence outlined above, the variant was classified as VUS-possibly pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.51
BayesDel_addAF
Pathogenic
0.21
D
BayesDel_noAF
Pathogenic
0.36
CADD
Pathogenic
30
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.89
D;.;.;.;.;.;.
Eigen
Pathogenic
0.89
Eigen_PC
Pathogenic
0.84
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Pathogenic
0.99
D;D;.;D;D;D;D
M_CAP
Uncertain
0.25
D
MetaRNN
Pathogenic
0.93
D;D;D;D;D;D;D
MetaSVM
Uncertain
0.57
D
MutationAssessor
Pathogenic
3.2
M;.;.;.;.;.;.
PrimateAI
Uncertain
0.58
T
PROVEAN
Pathogenic
-5.7
D;D;.;.;.;.;D
REVEL
Pathogenic
0.90
Sift
Pathogenic
0.0
D;D;.;.;.;.;D
Sift4G
Pathogenic
0.0010
D;D;.;.;.;.;D
Polyphen
1.0
D;.;.;.;.;.;.
Vest4
0.95
MVP
0.98
MPC
1.0
ClinPred
0.97
D
GERP RS
5.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.74
gMVP
0.86

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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.

Other links and lift over

dbSNP: rs267607066; hg19: chr20-3209333; API