rs56017519
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PM5PP3
The NM_000441.2(SLC26A4):c.1730T>C(p.Val577Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000435 in 1,607,936 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V577G) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000441.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SLC26A4 | NM_000441.2 | c.1730T>C | p.Val577Ala | missense_variant | 16/21 | ENST00000644269.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SLC26A4 | ENST00000644269.2 | c.1730T>C | p.Val577Ala | missense_variant | 16/21 | NM_000441.2 | P1 | ||
SLC26A4 | ENST00000480841.5 | n.579T>C | non_coding_transcript_exon_variant | 7/8 | 3 | ||||
SLC26A4 | ENST00000644846.1 | c.443T>C | p.Val148Ala | missense_variant, NMD_transcript_variant | 6/10 | ||||
SLC26A4 | ENST00000492030.2 | n.91-704T>C | intron_variant, non_coding_transcript_variant | 5 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152056Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251110Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135692
GnomAD4 exome AF: 0.00000412 AC: 6AN: 1455880Hom.: 0 Cov.: 28 AF XY: 0.00000276 AC XY: 2AN XY: 724738
GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 152056Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74252
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Dec 13, 2023 | Variant summary: SLC26A4 c.1730T>C (p.Val577Ala) results in a non-conservative amino acid change located in the STAS domain of the encoded protein sequence. Four of four in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 in 251110 control chromosomes. c.1730T>C has been reported in the literature in individuals affected with suspected Pendred Syndrome and hearing loss (Tesolin_2021, Roesch_2018, Likar_2018). These reports do not provide unequivocal conclusions about association of the variant with Pendred Syndrome. A functional study with variant-transfected cells showed severe loss in ion transport function, complete retention in the ER and dramatic reduction of expression (Roesch_2018). The following publications have been ascertained in the context of this evaluation (PMID: 29293505, 29320412, 34680964). Three submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. All submitters classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as VUS-possibly pathogenic. - |
Pendred syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Sep 05, 2021 | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Jan 22, 2015 | - - |
Autosomal recessive nonsyndromic hearing loss 4 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Sep 05, 2021 | - - |
Hearing impairment Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Centre for Mendelian Genomics, University Medical Centre Ljubljana | Mar 27, 2015 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at