7-107661656-C-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_ModerateBP6BP7BS1BS2

The NM_000441.2(SLC26A4):c.15C>A(p.Gly5Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00122 in 1,567,138 control chromosomes in the GnomAD database, including 15 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. G5G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0062 ( 8 hom., cov: 32)

Exomes 𝑓: 0.00069 ( 7 hom. )

Consequence

SLC26A4
NM_000441.2 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:10

Conservation

PhyloP100: 0.365

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 was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.43).

BP6

Variant 7-107661656-C-A is Benign according to our data. Variant chr7-107661656-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 43515.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=2, Benign=6}. Variant chr7-107661656-C-A is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=0.365 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00617 (940/152384) while in subpopulation AFR AF = 0.0213 (886/41596). AF 95% confidence interval is 0.0201. There are 8 homozygotes in GnomAd4. There are 467 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 8 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC26A4	NM_000441.2 link	c.15C>A	p.Gly5Gly	synonymous_variant	Exon 2 of 21	ENST00000644269.2	NP_000432.1	O43511-1
SLC26A4-AS1	NR_028137.1 link	n.143G>T		non_coding_transcript_exon_variant	Exon 1 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC26A4	ENST00000644269.2 link	c.15C>A	p.Gly5Gly	synonymous_variant	Exon 2 of 21		NM_000441.2	ENSP00000494017.1		O43511-1

Frequencies

GnomAD3 genomes

AF:

0.00617

AC:

939

AN:

152266

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0213

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00203

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000413

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00430

GnomAD2 exomes

AF:

0.00145

AC:

256

AN:

176868

AF XY:

0.00108

show subpopulations

Gnomad AFR exome

AF:

0.0229

Gnomad AMR exome

AF:

0.000968

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000900

Gnomad OTH exome

AF:

0.000833

GnomAD4 exome

AF:

0.000688

AC:

973

AN:

1414754

Hom.:

Cov.:

AF XY:

0.000619

AC XY:

434

AN XY:

700636

show subpopulations

African (AFR)

AF:

0.0239

AC:

782

AN:

32728

American (AMR)

AF:

0.00113

AC:

AN:

38924

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25476

East Asian (EAS)

AF:

0.00

AC:

AN:

37794

South Asian (SAS)

AF:

0.0000246

AC:

AN:

81282

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40026

Middle Eastern (MID)

AF:

0.00215

AC:

AN:

5578

European-Non Finnish (NFE)

AF:

0.0000494

AC:

AN:

1093998

Other (OTH)

AF:

0.00134

AC:

AN:

58948

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

109

164

218

273

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00617

AC:

940

AN:

152384

Hom.:

Cov.:

AF XY:

0.00627

AC XY:

467

AN XY:

74532

show subpopulations

African (AFR)

AF:

0.0213

AC:

886

AN:

41596

American (AMR)

AF:

0.00202

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.000414

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68034

Other (OTH)

AF:

0.00425

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

149

198

248

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000475

Hom.:

Bravo

AF:

0.00676

Asia WGS

AF:

0.00173

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:10

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Pendred syndrome

Uncertain:1Benign:3

Oct 18, 2019

Natera, Inc.

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Sep 05, 2021

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 29, 2018

Counsyl

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided

Benign:4

Feb 22, 2019

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Aug 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

SLC26A4: BP4, BP7, BS1, BS2; SLC26A4-AS1: BS1, BS2 -

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 23, 2019

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 29739340, 23280318) -

Autosomal recessive nonsyndromic hearing loss 4

Uncertain:1Benign:1

Sep 05, 2021

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not specified

Benign:2

Aug 24, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Gly5Gly in exon 2 of SLC26A4: This variant is not expected to have clinical sign ificance because it does not alter an amino acid residue, is not located within the splice consensus sequence, has been identified in 1.4% (54/3922) of African American chromosomes from a broad population by the NHLBI Exome sequencing proje ct (http://evs.gs.washington.edu/EVS/). -

Feb 13, 2018

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.92

PhyloP100

0.36

Mutation Taster

=100/0

polymorphism

(source)

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

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7-107661656-C-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over