rs759657964
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1_ModeratePM2PP3_StrongPP5_Moderate
The NM_005609.4(PYGM):c.1239+1G>T variant causes a splice donor change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 31)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
PYGM
NM_005609.4 splice_donor
NM_005609.4 splice_donor
Scores
5
1
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 7.28
Genes affected
PYGM (HGNC:9726): (glycogen phosphorylase, muscle associated) This gene encodes a muscle enzyme involved in glycogenolysis. Highly similar enzymes encoded by different genes are found in liver and brain. Mutations in this gene are associated with McArdle disease (myophosphorylase deficiency), a glycogen storage disease of muscle. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Sep 2009]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 10 ACMG points.
PVS1
?
Splicing variant, NOT destroyed by nmd, known LOF gene, truncates exone, which is 0.05773033 fraction of the gene. Cryptic splice site detected, with MaxEntScore 5.5, offset of 32, new splice context is: gggGTgagg. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 11-64753878-C-A is Pathogenic according to our data. Variant chr11-64753878-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1324977.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PYGM | NM_005609.4 | c.1239+1G>T | splice_donor_variant | ENST00000164139.4 | |||
PYGM | NM_001164716.1 | c.975+1G>T | splice_donor_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PYGM | ENST00000164139.4 | c.1239+1G>T | splice_donor_variant | 1 | NM_005609.4 | P1 | |||
PYGM | ENST00000377432.7 | c.975+1G>T | splice_donor_variant | 2 | |||||
PYGM | ENST00000460413.1 | n.316+1G>T | splice_donor_variant, non_coding_transcript_variant | 3 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD3 genomes
?
Cov.:
31
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1419690Hom.: 0 Cov.: 37 AF XY: 0.00 AC XY: 0AN XY: 702390
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
AC:
0
AN:
1419690
Hom.:
Cov.:
37
AF XY:
AC XY:
0
AN XY:
702390
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 31
GnomAD4 genome
?
Cov.:
31
Bravo
AF:
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Glycogen storage disease, type V Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Nov 11, 2021 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
MutationTaster
Benign
D;D
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DG_spliceai
Position offset: -3
DS_DL_spliceai
Position offset: 1
Find out detailed SpliceAI scores and Pangolin per-transcript scores at