rs757027394
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2
The NM_006005.3(WFS1):c.2029G>A(p.Ala677Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000577 in 1,613,032 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain risk allele (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A677S) has been classified as Uncertain significance.
Frequency
Consequence
NM_006005.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
WFS1 | NM_006005.3 | c.2029G>A | p.Ala677Thr | missense_variant | 8/8 | ENST00000226760.5 | |
WFS1 | NM_001145853.1 | c.2029G>A | p.Ala677Thr | missense_variant | 8/8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
WFS1 | ENST00000226760.5 | c.2029G>A | p.Ala677Thr | missense_variant | 8/8 | 1 | NM_006005.3 | P2 | |
ENST00000661896.1 | n.1337+2091C>T | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes ? AF: 0.0000460 AC: 7AN: 152206Hom.: 0 Cov.: 34
GnomAD3 exomes AF: 0.0000878 AC: 22AN: 250488Hom.: 0 AF XY: 0.0000591 AC XY: 8AN XY: 135472
GnomAD4 exome AF: 0.0000589 AC: 86AN: 1460826Hom.: 0 Cov.: 98 AF XY: 0.0000633 AC XY: 46AN XY: 726792
GnomAD4 genome ? AF: 0.0000460 AC: 7AN: 152206Hom.: 0 Cov.: 34 AF XY: 0.0000538 AC XY: 4AN XY: 74356
ClinVar
Submissions by phenotype
not provided Uncertain:5
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Nov 07, 2014 | - - |
Uncertain significance, no assertion criteria provided | clinical testing | Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC) | - | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Nov 13, 2023 | This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 677 of the WFS1 protein (p.Ala677Thr). This variant is present in population databases (rs757027394, gnomAD 0.02%). This missense change has been observed in individual(s) with clinical features of WFS1-related conditions (PMID: 26969326, 33046911). ClinVar contains an entry for this variant (Variation ID: 198834). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on WFS1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Feb 22, 2022 | In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 34837038, 26969326, 34426522, 33046911) - |
Uncertain significance, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Mar 26, 2024 | Variant summary: WFS1 c.2029G>A (p.Ala677Thr) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 8.8e-05 in 250488 control chromosomes (i.e. in 22 carriers) in the gnomAD database (v2.1 dataset). The variant, c.2029G>A, has been reported in the literature in heterozygous state in individuals affected with nonsyndromic hearing loss and type 2 diabetes (e.g. Sloan-Heggen_2016, Bonnefond_2020, Adeyemo_2021). These reports do not provide unequivocal conclusions about association of the variant with Wolfram Syndrome 1. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 26969326, 33046911, 34837038). ClinVar contains an entry for this variant (Variation ID: 198834). Based on the evidence outlined above, the variant was classified as uncertain significance. - |
Type 2 diabetes mellitus;C1833021:Autosomal dominant nonsyndromic hearing loss 6;C3280358:Wolfram-like syndrome;C3805412:Cataract 41;C4551693:Wolfram syndrome 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Feb 12, 2022 | - - |
Childhood onset hearing loss Uncertain:1
Uncertain significance, criteria provided, single submitter | research | National Institute on Deafness and Communication Disorders, National Institutes of Health | Jul 08, 2021 | PP3 / Modifications from PMID: 30311386 for classification: The genetic causes of hearing loss have not yet been well characterized in the Yoruba population, and the information regarding variant MAF in this population is still limited, so we did not exclude any variant based on their "high" MAF. PP3 criteria was applied even if the REVEL score was below 0.7, if at least two of the pathogenicity prediction algorithms used predicted that the variant was damaging or likely damaging. - |
Wolfram syndrome 1 Other:1
Uncertain risk allele, criteria provided, single submitter | research | Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic | - | Potent mutations in WFS1 gene are associated with Wolfram's syndrome, an autosomal recessive condition, which cause diabetes mellitus, diabetes insipidus, deafness and optic atrophy.However no sufficient evidence is found to ascertain the role of this particular variant rs757027394 in Wolfram's syndrome yet. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at