chr20-35115899-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_018217.3(EDEM2):c.1271G>A(p.Arg424His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,613,920 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 (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R424C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

EDEM2
NM_018217.3 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 7.73

Variant links:

Genes affected

EDEM2 (HGNC:15877): (ER degradation enhancing alpha-mannosidase like protein 2) In the endoplasmic reticulum (ER), misfolded proteins are retrotranslocated to the cytosol and degraded by the proteasome in a process known as ER-associated degradation (ERAD). EDEM2 belongs to a family of proteins involved in ERAD of glycoproteins (Mast et al., 2005 [PubMed 15537790]).[supplied by OMIM, Mar 2008]

EDEM2 links:

MMP24-AS1-EDEM2 (HGNC:):

MMP24-AS1-EDEM2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.881

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EDEM2	NM_018217.3 link	c.1271G>A	p.Arg424His	missense_variant	Exon 11 of 11	ENST00000374492.8	NP_060687.2	Q9BV94-1
EDEM2	NM_001145025.2 link	c.1160G>A	p.Arg387His	missense_variant	Exon 10 of 10		NP_001138497.1	Q9BV94-2
MMP24-AS1-EDEM2	NM_001355008.2 link	c.1148G>A	p.Arg383His	missense_variant	Exon 15 of 15		NP_001341937.1
EDEM2	NR_026728.2 link	n.1565G>A		non_coding_transcript_exon_variant	Exon 10 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EDEM2	ENST00000374492.8 link	c.1271G>A	p.Arg424His	missense_variant	Exon 11 of 11	1	NM_018217.3	ENSP00000363616.3		Q9BV94-1
EDEM2	ENST00000374491.3 link	c.1160G>A	p.Arg387His	missense_variant	Exon 10 of 10	1		ENSP00000363615.2		Q9BV94-2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461814

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727194

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74302

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Maturity onset diabetes mellitus in young

Uncertain:1

Nov 01, 2019

Medical Genomics Research Department, King Abdullah International Medical Research Center

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The Arg424His variant in EDEM2 located in a highly conserved amino acid region with arginine conserved up to Saccharomyces cerevisiae. Prediction software SIFT, PolyPhen-2, PROVEAN and PhD-SNP predicted the variant to be deleterious. Additionally, in vitro functional studies indicate that the EDEM2 disruption reduces the expression of beta-cell genes involved in the glucose-stimulated insulin secretion (GSIS) pathway leading to an overall suppression of insulin secretion. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.80

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.23

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.50

T;.

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D

M_CAP

Benign

0.081

MetaRNN

Pathogenic

0.88

D;D

MetaSVM

Uncertain

0.053

MutationAssessor

Uncertain

2.7

M;.

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-4.7

D;D

REVEL

Pathogenic

0.69

Sift

Benign

0.13

T;T

Sift4G

Benign

0.23

T;T

Polyphen

1.0

D;D

Vest4

0.84

MutPred

0.64

Loss of stability (P = 0.0603);.;

MVP

0.91

MPC

1.2

ClinPred

0.99

GERP RS

5.5

Varity_R

0.48

gMVP

0.81

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over