rs773625464

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_000642.3(AGL):​c.3346C>T​(p.Arg1116Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000533 in 1,613,454 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1116H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

AGL
NM_000642.3 missense

Scores

13
6

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 3.75

Publications

4 publications found
Variant links:
Genes affected
AGL (HGNC:321): (amylo-alpha-1, 6-glucosidase, 4-alpha-glucanotransferase) This gene encodes the glycogen debrancher enzyme which is involved in glycogen degradation. This enzyme has two independent catalytic activities which occur at different sites on the protein: a 4-alpha-glucotransferase activity and a amylo-1,6-glucosidase activity. Mutations in this gene are associated with glycogen storage disease although a wide range of enzymatic and clinical variability occurs which may be due to tissue-specific alternative splicing. Alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
AGL Gene-Disease associations (from GenCC):
  • glycogen storage disease III
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Myriad Women's Health, Genomics England PanelApp, G2P, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_000642.3, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.953

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000642.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
AGL
NM_000642.3
MANE Select
c.3346C>Tp.Arg1116Cys
missense
Exon 25 of 34NP_000633.2P35573-1
AGL
NM_000028.3
c.3346C>Tp.Arg1116Cys
missense
Exon 25 of 34NP_000019.2P35573-1
AGL
NM_000643.3
c.3346C>Tp.Arg1116Cys
missense
Exon 25 of 34NP_000634.2A0A0S2A4E4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
AGL
ENST00000361915.8
TSL:1 MANE Select
c.3346C>Tp.Arg1116Cys
missense
Exon 25 of 34ENSP00000355106.3P35573-1
AGL
ENST00000294724.8
TSL:1
c.3346C>Tp.Arg1116Cys
missense
Exon 25 of 34ENSP00000294724.4P35573-1
AGL
ENST00000370163.7
TSL:1
c.3346C>Tp.Arg1116Cys
missense
Exon 25 of 34ENSP00000359182.3P35573-1

Frequencies

GnomAD3 genomes
AF:
0.0000329
AC:
5
AN:
152120
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
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:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000239
AC:
6
AN:
251412
AF XY:
0.0000221
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:
0.0000440
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000554
AC:
81
AN:
1461334
Hom.:
0
Cov.:
31
AF XY:
0.0000578
AC XY:
42
AN XY:
727020
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33462
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26128
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39666
South Asian (SAS)
AF:
0.0000232
AC:
2
AN:
86250
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53406
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.0000675
AC:
75
AN:
1111556
Other (OTH)
AF:
0.0000331
AC:
2
AN:
60376
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.451
Heterozygous variant carriers
0
4
8
12
16
20
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.0000329
AC:
5
AN:
152120
Hom.:
0
Cov.:
32
AF XY:
0.0000404
AC XY:
3
AN XY:
74296
show subpopulations
African (AFR)
AF:
0.0000483
AC:
2
AN:
41436
American (AMR)
AF:
0.00
AC:
0
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3462
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10580
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000441
AC:
3
AN:
68026
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
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:
0.000113
Hom.:
0
Bravo
AF:
0.0000491

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
3
-
Glycogen storage disease type III (3)
-
1
-
Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.39
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.29
CADD
Pathogenic
29
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.45
T
Eigen
Pathogenic
0.80
Eigen_PC
Pathogenic
0.72
FATHMM_MKL
Uncertain
0.90
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Uncertain
0.13
D
MetaRNN
Pathogenic
0.95
D
MetaSVM
Uncertain
0.27
D
MutationAssessor
Pathogenic
3.9
H
PhyloP100
3.8
PrimateAI
Uncertain
0.60
T
PROVEAN
Pathogenic
-7.3
D
REVEL
Pathogenic
0.79
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Varity_R
0.80
gMVP
0.91
Mutation Taster
=75/25
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.15
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

Other links and lift over

dbSNP: rs773625464;
hg19: chr1-100361928;
COSMIC: COSV54048331;
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