rs796052433

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001360071.2(EPM2A):​c.-593G>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000255 in 1,255,480 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000022 ( 1 hom. )

Consequence

EPM2A
NM_001360071.2 5_prime_UTR_premature_start_codon_gain

Scores

5
6
7

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 3.36

Publications

0 publications found
Variant links:
Genes affected
EPM2A (HGNC:3413): (EPM2A glucan phosphatase, laforin) This gene encodes a dual-specificity phosphatase and may be involved in the regulation of glycogen metabolism. The protein acts on complex carbohydrates to prevent glycogen hyperphosphorylation, thus avoiding the formation of insoluble aggregates. Loss-of-function mutations in this gene have been associated with Lafora disease, a rare, adult-onset recessive neurodegenerative disease, which results in myoclonus epilepsy and usually results in death several years after the onset of symptoms. The disease is characterized by the accumulation of insoluble particles called Lafora bodies, which are derived from glycogen. [provided by RefSeq, Jan 2018]
EPM2A-DT (HGNC:48990): (EPM2A divergent transcript)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001360071.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
EPM2A
NM_005670.4
MANE Select
c.77G>Tp.Arg26Leu
missense
Exon 1 of 4NP_005661.1O95278-1
EPM2A
NM_001360071.2
c.-593G>T
5_prime_UTR_premature_start_codon_gain
Exon 1 of 5NP_001347000.1O95278-8
EPM2A
NM_001368131.1
c.-291G>T
5_prime_UTR_premature_start_codon_gain
Exon 1 of 4NP_001355060.1O95278-8

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
EPM2A
ENST00000367519.9
TSL:1 MANE Select
c.77G>Tp.Arg26Leu
missense
Exon 1 of 4ENSP00000356489.3O95278-1
EPM2A
ENST00000435470.2
TSL:1
c.77G>Tp.Arg26Leu
missense
Exon 1 of 5ENSP00000405913.2O95278-2
EPM2A
ENST00000638262.1
TSL:1
c.77G>Tp.Arg26Leu
missense
Exon 1 of 3ENSP00000492876.1O95278-5

Frequencies

GnomAD3 genomes
AF:
0.0000532
AC:
8
AN:
150498
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000132
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:
0.0000889
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000246
AC:
1
AN:
40704
AF XY:
0.0000424
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000716
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000217
AC:
24
AN:
1104982
Hom.:
1
Cov.:
34
AF XY:
0.0000225
AC XY:
12
AN XY:
533242
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
22558
American (AMR)
AF:
0.00
AC:
0
AN:
16720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
15648
East Asian (EAS)
AF:
0.00
AC:
0
AN:
22316
South Asian (SAS)
AF:
0.00
AC:
0
AN:
33840
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
21772
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
2964
European-Non Finnish (NFE)
AF:
0.0000259
AC:
24
AN:
926354
Other (OTH)
AF:
0.00
AC:
0
AN:
42810
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.473
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000532
AC:
8
AN:
150498
Hom.:
0
Cov.:
33
AF XY:
0.0000681
AC XY:
5
AN XY:
73462
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41222
American (AMR)
AF:
0.000132
AC:
2
AN:
15112
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3460
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5132
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
9952
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000889
AC:
6
AN:
67494
Other (OTH)
AF:
0.00
AC:
0
AN:
2068
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.469
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000680

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Inborn genetic diseases (1)
-
1
-
not provided (1)
-
1
-
Progressive myoclonic epilepsy (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.59
BayesDel_addAF
Pathogenic
0.24
D
BayesDel_noAF
Uncertain
0.10
CADD
Benign
20
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.45
T
Eigen
Benign
0.025
Eigen_PC
Benign
0.0072
FATHMM_MKL
Uncertain
0.90
D
LIST_S2
Benign
0.85
D
M_CAP
Pathogenic
0.95
D
MetaRNN
Uncertain
0.60
D
MetaSVM
Uncertain
0.44
D
MutationAssessor
Benign
1.2
L
PhyloP100
3.4
PrimateAI
Pathogenic
0.94
D
PROVEAN
Benign
-0.63
N
REVEL
Pathogenic
0.65
Sift
Benign
0.34
T
Sift4G
Benign
0.14
T
Polyphen
0.83
P
Vest4
0.32
MutPred
0.45
Loss of methylation at R26 (P = 0.0262)
MVP
0.93
MPC
0.66
ClinPred
0.97
D
GERP RS
3.5
PromoterAI
-0.090
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.6
gMVP
0.69
Mutation Taster
=21/79
disease causing

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

Other links and lift over

dbSNP: rs796052433; hg19: chr6-146056558; API