rs111033220

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PM1PM2PM5PP3_StrongPP5_Very_Strong

The NM_000441.2(SLC26A4):​c.1229C>A​(p.Thr410Lys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T410M) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Consequence

SLC26A4
NM_000441.2 missense

Scores

11
7
1

Clinical Significance

Likely pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 4.03
Variant links:
Genes affected
SLC26A4 (HGNC:8818): (solute carrier family 26 member 4) Mutations in this gene are associated with Pendred syndrome, the most common form of syndromic deafness, an autosomal-recessive disease. It is highly homologous to the SLC26A3 gene; they have similar genomic structures and this gene is located 3' of the SLC26A3 gene. The encoded protein has homology to sulfate transporters. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PM1
In a topological_domain Extracellular (size 15) in uniprot entity S26A4_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000441.2
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr7-107690203-C-T is described in Lovd as [Pathogenic].
PP3
MetaRNN computational evidence supports a deleterious effect, 0.982
PP5
Variant 7-107690203-C-A is Pathogenic according to our data. Variant chr7-107690203-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 691512.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SLC26A4NM_000441.2 linkuse as main transcriptc.1229C>A p.Thr410Lys missense_variant 10/21 ENST00000644269.2 NP_000432.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SLC26A4ENST00000644269.2 linkuse as main transcriptc.1229C>A p.Thr410Lys missense_variant 10/21 NM_000441.2 ENSP00000494017 P1O43511-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
29
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Autosomal recessive nonsyndromic hearing loss 4 Pathogenic:1
Likely pathogenic, criteria provided, single submitterclinical testing;in vitroNational Institute of Sensory Organs, National Hospital Organization Tokyo Medical CenterAug 20, 2019in vitro experiment -
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpApr 14, 2022This variant disrupts the p.Thr410 amino acid residue in SLC26A4. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 9618167, 11919333, 11932316, 24224479, 25468468). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Experimental studies have shown that this missense change affects SLC26A4 function (PMID: 31599023). 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) performed at Invitae indicates that this missense variant is expected to disrupt SLC26A4 protein function. ClinVar contains an entry for this variant (Variation ID: 691512). This missense change has been observed in individual(s) with hearing loss and enlarged vestibular aqueduct (PMID: 31599023). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces threonine, which is neutral and polar, with lysine, which is basic and polar, at codon 410 of the SLC26A4 protein (p.Thr410Lys). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.51
D
BayesDel_noAF
Pathogenic
0.49
CADD
Pathogenic
30
DANN
Uncertain
0.99
DEOGEN2
Pathogenic
0.88
D;D
Eigen
Pathogenic
0.78
Eigen_PC
Pathogenic
0.69
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Uncertain
0.94
.;D
M_CAP
Pathogenic
0.44
D
MetaRNN
Pathogenic
0.98
D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.3
M;M
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.68
T
PROVEAN
Uncertain
-3.6
D;.
REVEL
Pathogenic
0.90
Sift
Uncertain
0.0010
D;.
Sift4G
Uncertain
0.0020
D;.
Polyphen
1.0
D;D
Vest4
0.91
MutPred
0.90
Gain of ubiquitination at T410 (P = 0.0177);Gain of ubiquitination at T410 (P = 0.0177);
MVP
1.0
MPC
0.076
ClinPred
1.0
D
GERP RS
5.1
Varity_R
0.96
gMVP
0.98

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
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: rs111033220; hg19: chr7-107330648; API