4-6301072-G-C

Variant names:

• chr4-6301072-G-C
• rs35218685
• NM_006005.3:c.1277G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM1 BP4

The NM_006005.3(WFS1):​c.1277G>C​(p.Cys426Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000479 in 1,461,784 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C426Y) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: WFS1 NM_006005.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.27
• Publications: 11 publications found

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]

WFS1 Gene-Disease associations (from GenCC):

• nonsyndromic genetic hearing loss

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Wolfram-like syndrome

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, Ambry Genetics, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)
• Wolfram syndrome

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• autosomal dominant nonsyndromic hearing loss 6

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• cataract 41

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Wolfram syndrome 1

  Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• autosomal dominant nonsyndromic hearing loss

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• early-onset nuclear cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• type 2 diabetes mellitus

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ENSG00000286176 (HGNC:58722):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM1: In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 11 uncertain in NM_006005.3
• BP4: Computational evidence support a benign effect (MetaRNN=0.3504914).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006005.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WFS1	NM_006005.3	MANE Select	c.1277G>C	p.Cys426Ser	missense	Exon 8 of 8	NP_005996.2	O76024
	WFS1	NM_001145853.1		c.1277G>C	p.Cys426Ser	missense	Exon 8 of 8	NP_001139325.1	O76024

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WFS1	ENST00000226760.5	TSL:1 MANE Select	c.1277G>C	p.Cys426Ser	missense	Exon 8 of 8	ENSP00000226760.1	O76024
	WFS1	ENST00000503569.5	TSL:1	c.1277G>C	p.Cys426Ser	missense	Exon 8 of 8	ENSP00000423337.1	O76024
	WFS1	ENST00000852027.1		c.1370G>C	p.Cys457Ser	missense	Exon 9 of 9	ENSP00000522086.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251336 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461784 Hom.: 0 Cov.: 103 AF XY: 0.00000413 AC XY: 3 AN XY: 727204

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.000176 AC: 7 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53316

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.0017	T
BayesDel_noAF	Uncertain	-0.070
CADD	Benign	18
DANN	Benign	0.92
DEOGEN2	Benign	0.20	T
Eigen	Benign	-0.0081
Eigen_PC	Benign	0.055
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.46	D
MetaRNN	Benign	0.35	T
MetaSVM	Uncertain	0.19	D
MutationAssessor	Benign	1.9	M
PhyloP100		5.3
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-1.7	N
REVEL	Uncertain	0.59
Sift	Uncertain	0.0060	D
Sift4G	Benign	0.089	T
Polyphen		0.21	B
Vest4		0.37
MutPred		0.59		Gain of disorder (P = 0.0014)
MVP		0.94
ClinPred		0.31	T
GERP RS		3.9
Varity_R		0.36
gMVP		0.70
Mutation Taster		=98/2	polymorphism

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

Other links and lift over

dbSNP: rs35218685; hg19: chr4-6302799;