rs1057524889

Positions:

• chr4-6291952-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006005.3(WFS1):​c.667C>A​(p.Leu223Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,458,994 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. L223L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: WFS1 NM_006005.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.20

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.22556806).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WFS1	NM_006005.3	c.667C>A	p.Leu223Met	missense_variant	6/8	ENST00000226760.5
WFS1	NM_001145853.1	c.667C>A	p.Leu223Met	missense_variant	6/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WFS1	ENST00000226760.5	c.667C>A	p.Leu223Met	missense_variant	6/8	1	NM_006005.3	P2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1458994 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 725554

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: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Monogenic diabetes Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Personalized Diabetes Medicine Program, University of Maryland School of Medicine

Oct 07, 2016

ACMG Criteria: PM2, PP3, BP4 -

Wolfram syndrome 1 Uncertain:1

Uncertain significance, 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 rs1057524889 in Wolfram's syndrome yet. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.036	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	14
DANN	Uncertain	0.99
DEOGEN2	Benign	0.068	T;T
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.29
FATHMM_MKL	Benign	0.16	N
LIST_S2	Benign	0.74	.;T
M_CAP	Uncertain	0.21	D
MetaRNN	Benign	0.23	T;T
MetaSVM	Benign	-0.29	T
MutationAssessor	Benign	1.4	L;L
MutationTaster	Benign	1.0	N;N
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-0.16	N;N
REVEL	Benign	0.18
Sift	Benign	0.12	T;T
Sift4G	Benign	0.080	T;T
Polyphen		0.67	P;P
Vest4		0.35
MutPred		0.26		Loss of glycosylation at P220 (P = 0.0224);Loss of glycosylation at P220 (P = 0.0224);
MVP		0.98
ClinPred		0.36	T
GERP RS		1.4
Varity_R		0.034
gMVP		0.35

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

Other links and lift over

dbSNP: rs1057524889; hg19: chr4-6293679;