chr7-103374457-G-A

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_198999.3(SLC26A5):c.2177C>T(p.Ala726Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000845 in 1,613,028 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00089 ( 5 hom. )

Consequence

SLC26A5
NM_198999.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.829

Variant links:

Genes affected

SLC26A5 (HGNC:9359): (solute carrier family 26 member 5) This gene encodes a member of the SLC26A/SulP transporter family. The protein functions as a molecular motor in motile outer hair cells (OHCs) of the cochlea, inducing changes in cell length that act to amplify sound levels. The transmembrane protein is an incomplete anion transporter, and does not allow anions to cross the cell membrane but instead undergoes a conformational change in response to changes in intracellular Cl- levels that results in a change in cell length. The protein functions at microsecond rates, which is several orders of magnitude faster than conventional molecular motor proteins. Mutations in this gene are potential candidates for causing neurosensory deafness. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Nov 2009]

SLC26A5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.060248762).

BP6

Variant 7-103374457-G-A is Benign according to our data. Variant chr7-103374457-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1300471.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000394 (60/152136) while in subpopulation NFE AF= 0.000735 (50/68020). AF 95% confidence interval is 0.000573. There are 0 homozygotes in gnomad4. There are 22 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC26A5	NM_198999.3 link	c.2177C>T	p.Ala726Val	missense_variant	Exon 20 of 20	ENST00000306312.8	NP_945350.1	P58743-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SLC26A5	ENST00000306312.8 link	c.2177C>T	p.Ala726Val	missense_variant	Exon 20 of 20	1	NM_198999.3	ENSP00000304783.3	P58743-1
SLC26A5	ENST00000393727.5 link	c.2183C>T	p.Ala728Val	missense_variant	Exon 18 of 18	1		ENSP00000377328.1	Q7Z7F4
SLC26A5	ENST00000393723.2 link	c.2087C>T	p.Ala696Val	missense_variant	Exon 17 of 17	1		ENSP00000377324.1	P58743-6

Frequencies

GnomAD3 genomes

AF:

0.000394

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000241

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:

0.000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000187

AC:

AN:

251426

Hom.:

AF XY:

0.000206

AC XY:

AN XY:

135890

show subpopulations

Gnomad AFR exome

AF:

0.000185

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:

0.000378

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000892

AC:

1303

AN:

1460892

Hom.:

Cov.:

AF XY:

0.000835

AC XY:

607

AN XY:

726752

show subpopulations

Gnomad4 AFR exome

AF:

0.000150

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00115

Gnomad4 OTH exome

AF:

0.000365

GnomAD4 genome

AF:

0.000394

AC:

AN:

152136

Hom.:

Cov.:

AF XY:

0.000296

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.000241

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:

0.000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000378

Hom.:

Bravo

AF:

0.000370

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000296

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Feb 13, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; Variants in candidate genes are classified as variants of uncertain significance in accordance with ACMG guidelines (Richards et al., 2015) -

Oct 10, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Inborn genetic diseases

Uncertain:1

Aug 17, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2177C>T (p.A726V) alteration is located in exon 20 (coding exon 18) of the SLC26A5 gene. This alteration results from a C to T substitution at nucleotide position 2177, causing the alanine (A) at amino acid position 726 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.31

CADD

Benign

6.8

DANN

Benign

0.95

DEOGEN2

Benign

0.12

.;T;.;T;.;T;.

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.98

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.81

.;T;T;T;T;.;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.060

T;T;T;T;T;T;T

MetaSVM

Uncertain

-0.27

MutationAssessor

Benign

0.0

.;N;.;.;.;.;.

PrimateAI

Benign

0.41

PROVEAN

Benign

0.32

N;N;N;.;N;N;N

REVEL

Benign

0.26

Sift

Benign

0.19

T;T;T;.;T;T;T

Sift4G

Benign

0.33

T;T;T;T;T;T;T

Polyphen

0.0

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

Vest4

0.20

MVP

0.69

MPC

0.13

ClinPred

0.0090

GERP RS

1.9

Varity_R

0.026

gMVP

0.19

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