rs112034326

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_002103.5(GYS1):​c.1309-4G>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000188 in 1,594,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

GYS1
NM_002103.5 splice_region, intron

Scores

2
Splicing: ADA: 0.00004795
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.29
Variant links:
Genes affected
GYS1 (HGNC:4706): (glycogen synthase 1) The protein encoded by this gene catalyzes the addition of glucose monomers to the growing glycogen molecule through the formation of alpha-1,4-glycoside linkages. Mutations in this gene are associated with muscle glycogen storage disease. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.69).
BP6
Variant 19-48974737-C-T is Benign according to our data. Variant chr19-48974737-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 536622.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
GYS1NM_002103.5 linkc.1309-4G>A splice_region_variant, intron_variant ENST00000323798.8 NP_002094.2 P13807-1
GYS1NM_001161587.2 linkc.1117-4G>A splice_region_variant, intron_variant NP_001155059.1 P13807-2
GYS1NR_027763.2 linkn.1324-4G>A splice_region_variant, intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
GYS1ENST00000323798.8 linkc.1309-4G>A splice_region_variant, intron_variant 1 NM_002103.5 ENSP00000317904.3 P13807-1
GYS1ENST00000263276.6 linkc.1117-4G>A splice_region_variant, intron_variant 1 ENSP00000263276.6 P13807-2
GYS1ENST00000472004.5 linkn.64-4G>A splice_region_variant, intron_variant 3
GYS1ENST00000496048.1 linkn.216-4G>A splice_region_variant, intron_variant 3

Frequencies

GnomAD3 genomes
AF:
0.0000592
AC:
9
AN:
152002
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.000193
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:
0.00
Gnomad OTH
AF:
0.000479
GnomAD3 exomes
AF:
0.00000800
AC:
2
AN:
250088
Hom.:
0
AF XY:
0.00000739
AC XY:
1
AN XY:
135376
show subpopulations
Gnomad AFR exome
AF:
0.000125
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000146
AC:
21
AN:
1442804
Hom.:
0
Cov.:
27
AF XY:
0.0000167
AC XY:
12
AN XY:
719080
show subpopulations
Gnomad4 AFR exome
AF:
0.000333
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000639
Gnomad4 OTH exome
AF:
0.0000335
GnomAD4 genome
AF:
0.0000592
AC:
9
AN:
152002
Hom.:
0
Cov.:
31
AF XY:
0.0000404
AC XY:
3
AN XY:
74252
show subpopulations
Gnomad4 AFR
AF:
0.000193
Gnomad4 AMR
AF:
0.00
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:
0.000479
Alfa
AF:
0.0000330
Hom.:
0
Bravo
AF:
0.0000831
Asia WGS
AF:
0.000577
AC:
2
AN:
3478

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Glycogen storage disease due to muscle and heart glycogen synthase deficiency Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 31, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.69
CADD
Benign
0.74
DANN
Benign
0.57
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000048
dbscSNV1_RF
Benign
0.0060
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.

Other links and lift over

dbSNP: rs112034326; hg19: chr19-49477994; API