rs138771366

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PM1PM2BP4

The NM_006005.3(WFS1):​c.1297G>A​(p.Ala433Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000165 in 1,613,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

WFS1
NM_006005.3 missense

Scores

1
9
9

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 4.89
Variant links:
Genes affected
WFS1 (HGNC:12762): (wolframin ER transmembrane glycoprotein) This gene encodes a transmembrane protein, which is located primarily in the endoplasmic reticulum and ubiquitously expressed with highest levels in brain, pancreas, heart, and insulinoma beta-cell lines. Mutations in this gene are associated with Wolfram syndrome, also called DIDMOAD (Diabetes Insipidus, Diabetes Mellitus, Optic Atrophy, and Deafness), an autosomal recessive disorder. The disease affects the brain and central nervous system. Mutations in this gene can also cause autosomal dominant deafness 6 (DFNA6), also known as DFNA14 or DFNA38. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2009]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM1
In a transmembrane_region Helical (size 20) in uniprot entity WFS1_HUMAN there are 13 pathogenic changes around while only 4 benign (76%) in NM_006005.3
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.33599663).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
WFS1NM_006005.3 linkc.1297G>A p.Ala433Thr missense_variant Exon 8 of 8 ENST00000226760.5 NP_005996.2 O76024A0A0S2Z4V6
WFS1NM_001145853.1 linkc.1297G>A p.Ala433Thr missense_variant Exon 8 of 8 NP_001139325.1 O76024A0A0S2Z4V6

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
WFS1ENST00000226760.5 linkc.1297G>A p.Ala433Thr missense_variant Exon 8 of 8 1 NM_006005.3 ENSP00000226760.1 O76024

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152132
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.000118
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000597
AC:
15
AN:
251212
Hom.:
0
AF XY:
0.0000589
AC XY:
8
AN XY:
135778
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000123
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000177
AC:
259
AN:
1461674
Hom.:
0
Cov.:
104
AF XY:
0.000165
AC XY:
120
AN XY:
727148
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000230
Gnomad4 OTH exome
AF:
0.0000497
GnomAD4 genome
AF:
0.0000526
AC:
8
AN:
152132
Hom.:
0
Cov.:
33
AF XY:
0.0000269
AC XY:
2
AN XY:
74316
show subpopulations
Gnomad4 AFR
AF:
0.00
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:
0.000118
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000862
Hom.:
0
Bravo
AF:
0.0000227
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000778
AC:
3
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.0000659
AC:
8
EpiCase
AF:
0.00
EpiControl
AF:
0.000178

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Uncertain:1
Feb 07, 2016
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.Ala433Thr variant in WFS1 has not been previously reported in individuals with hearing loss or Wolfram syndrome. This variant has been identified in 8/66 730 European chromosomes by the Exome Aggregation Consortium (ExAC, http://exac. broadinstitute.org; dbSNP rs138771366); however, its frequency is not high enoug h to rule out a pathogenic role. Computational prediction tools and conservation analyses suggest that the p.Ala433Thr variant may not impact the protein, thoug h this information is not predictive enough to rule out pathogenicity. In summar y, the clinical significance of the p.Ala433Thr variant is uncertain. -

Inborn genetic diseases Uncertain:1
Apr 12, 2023
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.1297G>A (p.A433T) alteration is located in exon 8 (coding exon 7) of the WFS1 gene. This alteration results from a G to A substitution at nucleotide position 1297, causing the alanine (A) at amino acid position 433 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Type 2 diabetes mellitus;C1833021:Autosomal dominant nonsyndromic hearing loss 6;C3280358:Wolfram-like syndrome;C3805412:Cataract 41;C4551693:Wolfram syndrome 1 Uncertain:1
Jan 05, 2024
Fulgent Genetics, Fulgent Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not provided Uncertain:1
Nov 05, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 433 of the WFS1 protein (p.Ala433Thr). This variant is present in population databases (rs138771366, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with WFS1-related conditions. ClinVar contains an entry for this variant (Variation ID: 166587). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt WFS1 protein function with a negative predictive value of 95%. 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. -

Autosomal dominant nonsyndromic hearing loss 6 Uncertain:1
Oct 30, 2015
Division of Human Genetics, Children's Hospital of Philadelphia
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.34
BayesDel_addAF
Benign
-0.048
T
BayesDel_noAF
Uncertain
-0.080
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Benign
0.089
T;T
Eigen
Benign
-0.045
Eigen_PC
Benign
0.066
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Uncertain
0.92
.;D
M_CAP
Pathogenic
0.44
D
MetaRNN
Benign
0.34
T;T
MetaSVM
Uncertain
0.085
D
MutationAssessor
Uncertain
2.2
M;M
PrimateAI
Uncertain
0.50
T
PROVEAN
Benign
0.31
N;N
REVEL
Uncertain
0.48
Sift
Benign
0.86
T;T
Sift4G
Benign
0.32
T;T
Polyphen
0.22
B;B
Vest4
0.25
MVP
0.98
ClinPred
0.12
T
GERP RS
4.7
Varity_R
0.070
gMVP
0.75

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.

Other links and lift over

dbSNP: rs138771366; hg19: chr4-6302819; API