dbSNP rs752807925: SLC26A4:p.Gln696* (chr7-107704382-C-T) – ACMG Classification: Pathogenic (18 pts)

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_000441.2(SLC26A4):c.2086C>T(p.Gln696*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000352 in 1,137,102 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 Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

SLC26A4
NM_000441.2 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9

Conservation

PhyloP100: 1.41

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 7-107704382-C-T is Pathogenic according to our data. Variant chr7-107704382-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 189164.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-107704382-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC26A4	NM_000441.2 link	c.2086C>T	p.Gln696*	stop_gained	Exon 18 of 21	ENST00000644269.2	NP_000432.1	O43511-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SLC26A4	ENST00000644269.2 link	c.2086C>T	p.Gln696*	stop_gained	Exon 18 of 21		NM_000441.2	ENSP00000494017.1	O43511-1
SLC26A4	ENST00000492030.2 link	n.373C>T		non_coding_transcript_exon_variant	Exon 3 of 6	5
SLC26A4	ENST00000644846.1 link	n.744+2325C>T		intron_variant	Intron 7 of 9			ENSP00000494344.1	A0A2R8Y4W7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000134

AC:

AN:

223536

Hom.:

AF XY:

0.0000167

AC XY:

AN XY:

120070

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000169

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000352

AC:

AN:

1137102

Hom.:

Cov.:

AF XY:

0.00000346

AC XY:

AN XY:

578728

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000787

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000203

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000831

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Pendred syndrome

Pathogenic:3

Jan 29, 2015

Counsyl

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: literature only

- -

Sep 05, 2021

Genome-Nilou Lab

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 16, 2020

Natera, Inc.

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Autosomal recessive nonsyndromic hearing loss 4

Pathogenic:3

Mar 24, 2024

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 26, 2019

Genetic Testing Center for Deafness, Department of Otolaryngology Head & Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: case-control

- -

Sep 05, 2021

Genome-Nilou Lab

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:2

Jan 17, 2022

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 21961810, 24913939, 26252218, 30842343, 30275481, 31541171, 24612839, 22289209, 23918157) -

Oct 13, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Gln696*) in the SLC26A4 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SLC26A4 are known to be pathogenic (PMID: 16283880, 25394566, 26252218, 26445815). This variant is present in population databases (rs752807925, gnomAD 0.02%). This premature translational stop signal has been observed in individuals with SLC26A4-related conditions (PMID: 21961810, 22289209, 26252218). ClinVar contains an entry for this variant (Variation ID: 189164). For these reasons, this variant has been classified as Pathogenic. -

Pendred syndrome;C3538946:Autosomal recessive nonsyndromic hearing loss 4

Pathogenic:1

Apr 15, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.59

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.70

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Uncertain

0.85

Vest4

0.89

GERP RS

3.5

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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