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NM_000441.2(SLC26A4):c.1069G>A (p.Ala357Thr) AND Pendred syndrome

Germline classification:
Benign (3 submissions)
Last evaluated:
Feb 25, 2019
Review status:
3 stars out of maximum of 4 stars
reviewed by expert panel
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV000275313.7

Allele description [Variation Report for NM_000441.2(SLC26A4):c.1069G>A (p.Ala357Thr)]

NM_000441.2(SLC26A4):c.1069G>A (p.Ala357Thr)

Gene:
SLC26A4:solute carrier family 26 member 4 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
7q22.3
Genomic location:
Preferred name:
NM_000441.2(SLC26A4):c.1069G>A (p.Ala357Thr)
Other names:
NM_000441.1(SLC26A4):c.1069G>A
HGVS:
  • NC_000007.14:g.107689120G>A
  • NG_008489.1:g.33486G>A
  • NM_000441.2:c.1069G>AMANE SELECT
  • NP_000432.1:p.Ala357Thr
  • NC_000007.13:g.107329565G>A
  • NM_000441.1:c.1069G>A
  • c.1069G>A
Protein change:
A357T
Links:
dbSNP: rs145467740
NCBI 1000 Genomes Browser:
rs145467740
Molecular consequence:
  • NM_000441.2:c.1069G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Pendred syndrome (PDS)
Synonyms:
DEAFNESS WITH GOITER; HYPOTHYROIDISM, CONGENITAL, DUE TO DYSHORMONOGENESIS, 2B; THYROID DYSHORMONOGENESIS 2B; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0010134; MedGen: C0271829; Orphanet: 705; OMIM: 274600

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000466097Illumina Laboratory Services, Illumina
criteria provided, single submitter

(ICSL Variant Classification Criteria 13 December 2019)
Uncertain significance
(Jan 13, 2018)
germlineclinical testing

Citation Link,

SCV000927023ClinGen Hearing Loss Variant Curation Expert Panel
reviewed by expert panel

(ClinGen HL ACMG Specifications v1)
Benign
(Feb 25, 2019)
germlinecuration

Citation Link,

SCV001459866Natera, Inc.
no assertion criteria provided
Uncertain significance
(Dec 16, 2019)
germlineclinical testing

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing, curation

Details of each submission

From Illumina Laboratory Services, Illumina, SCV000466097.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From ClinGen Hearing Loss Variant Curation Expert Panel, SCV000927023.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedcurationnot provided

Description

The filtering allele frequency of the p.Ala357Thr variant in the SLC26A4 gene is 0.47% for African chromosomes by gnomAD (136/24968 with 95% CI), which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen Hearing Loss Expert Panel for autosomal recessive Pendred syndrome variants (BA1). The REVEL computational prediction analysis tool produces a score of 0.849, which is above the threshold necessary to apply PP3; however, this information is not predictive of pathogenicity on its own and is not considered in conflict with evidence that supports a benign interpretation. In summary, this variant meets criteria to be classified as benign. ACMG/AMP criteria applied, as specified by the Hearing Loss Expert Panel: BA1.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Natera, Inc., SCV001459866.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Oct 26, 2024