7-107661727-A-G

Position:

chr7-107661727-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PM5PP3PP5

The NM_000441.2(SLC26A4):c.86A>G(p.Glu29Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000128 in 1,557,560 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E29Q) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

SLC26A4
NM_000441.2 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.62

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]

SLC26A4 links:

SLC26A4-AS1 (HGNC:22385): (SLC26A4 antisense RNA 1)

SLC26A4-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr7-107661726-G-C is described in Lovd as [Pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.746

PP5

Variant 7-107661727-A-G is Pathogenic according to our data. Variant chr7-107661727-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 552271.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=2, Pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC26A4	NM_000441.2 linkuse as main transcript	c.86A>G	p.Glu29Gly	missense_variant	2/21	ENST00000644269.2	NP_000432.1
SLC26A4-AS1	NR_028137.1 linkuse as main transcript	n.72T>C		non_coding_transcript_exon_variant	1/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC26A4	ENST00000644269.2 linkuse as main transcript	c.86A>G	p.Glu29Gly	missense_variant	2/21		NM_000441.2	ENSP00000494017	P1	O43511-1
SLC26A4-AS1	ENST00000668981.1 linkuse as main transcript	n.132T>C		non_coding_transcript_exon_variant	1/2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152206

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

7.12e-7

AC:

AN:

1405354

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

694714

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:

0.00

Gnomad4 NFE exome

AF:

9.20e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74352

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 10, 2023

For these reasons, this variant has been classified as Pathogenic. This variant disrupts the p.Glu29 amino acid residue in SLC26A4. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 11317356, 15355436, 16570074, 19017801, 20597900, 25394566). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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: 552271). This missense change has been observed in individuals with SLC26A4-related conditions (PMID: 25372295, 30762455). This variant is present in population databases (no rsID available, gnomAD 0.007%). This sequence change replaces glutamic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 29 of the SLC26A4 protein (p.Glu29Gly). -

Pendred syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Jun 01, 2017

- -

Pendred syndrome;C3538946:Autosomal recessive nonsyndromic hearing loss 4

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

May 03, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.020

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

D;D;T

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.73

.;T;T

M_CAP

Pathogenic

0.92

MetaRNN

Pathogenic

0.75

D;D;D

MetaSVM

Uncertain

0.71

MutationAssessor

Uncertain

2.3

M;M;.

MutationTaster

Benign

0.99

PrimateAI

Uncertain

0.67

PROVEAN

Pathogenic

-4.6

D;.;D

REVEL

Pathogenic

0.90

Sift

Uncertain

0.011

D;.;D

Sift4G

Uncertain

0.0050

D;.;T

Polyphen

0.90

P;P;.

Vest4

0.85

MutPred

0.41

Gain of helix (P = 0.0325);Gain of helix (P = 0.0325);Gain of helix (P = 0.0325);

MVP

0.99

MPC

0.045

ClinPred

0.99

GERP RS

4.2

Varity_R

0.44

gMVP

0.73

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