rs2304831

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000152.5(GAA):​c.2331+24T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.133 in 1,608,916 control chromosomes in the GnomAD database, including 17,068 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.14 ( 1835 hom., cov: 33)
Exomes 𝑓: 0.13 ( 15233 hom. )

Consequence

GAA
NM_000152.5 intron

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -3.32
Variant links:
Genes affected
GAA (HGNC:4065): (alpha glucosidase) This gene encodes lysosomal alpha-glucosidase, which is essential for the degradation of glycogen to glucose in lysosomes. The encoded preproprotein is proteolytically processed to generate multiple intermediate forms and the mature form of the enzyme. Defects in this gene are the cause of glycogen storage disease II, also known as Pompe's disease, which is an autosomal recessive disorder with a broad clinical spectrum. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-1.02).
BP6
Variant 17-80117133-T-C is Benign according to our data. Variant chr17-80117133-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 255359.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-80117133-T-C is described in Lovd as [Benign].
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.338 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
GAANM_000152.5 linkuse as main transcriptc.2331+24T>C intron_variant ENST00000302262.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
GAAENST00000302262.8 linkuse as main transcriptc.2331+24T>C intron_variant 1 NM_000152.5 P1

Frequencies

GnomAD3 genomes
AF:
0.143
AC:
21741
AN:
152082
Hom.:
1830
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.170
Gnomad AMI
AF:
0.189
Gnomad AMR
AF:
0.0960
Gnomad ASJ
AF:
0.0935
Gnomad EAS
AF:
0.351
Gnomad SAS
AF:
0.249
Gnomad FIN
AF:
0.152
Gnomad MID
AF:
0.0854
Gnomad NFE
AF:
0.115
Gnomad OTH
AF:
0.113
GnomAD3 exomes
AF:
0.149
AC:
36519
AN:
244470
Hom.:
3451
AF XY:
0.152
AC XY:
20234
AN XY:
133082
show subpopulations
Gnomad AFR exome
AF:
0.167
Gnomad AMR exome
AF:
0.0833
Gnomad ASJ exome
AF:
0.0970
Gnomad EAS exome
AF:
0.340
Gnomad SAS exome
AF:
0.240
Gnomad FIN exome
AF:
0.151
Gnomad NFE exome
AF:
0.116
Gnomad OTH exome
AF:
0.136
GnomAD4 exome
AF:
0.131
AC:
191528
AN:
1456716
Hom.:
15233
Cov.:
34
AF XY:
0.134
AC XY:
97123
AN XY:
724778
show subpopulations
Gnomad4 AFR exome
AF:
0.168
Gnomad4 AMR exome
AF:
0.0841
Gnomad4 ASJ exome
AF:
0.101
Gnomad4 EAS exome
AF:
0.392
Gnomad4 SAS exome
AF:
0.233
Gnomad4 FIN exome
AF:
0.155
Gnomad4 NFE exome
AF:
0.115
Gnomad4 OTH exome
AF:
0.137
GnomAD4 genome
AF:
0.143
AC:
21781
AN:
152200
Hom.:
1835
Cov.:
33
AF XY:
0.145
AC XY:
10783
AN XY:
74414
show subpopulations
Gnomad4 AFR
AF:
0.170
Gnomad4 AMR
AF:
0.0960
Gnomad4 ASJ
AF:
0.0935
Gnomad4 EAS
AF:
0.351
Gnomad4 SAS
AF:
0.252
Gnomad4 FIN
AF:
0.152
Gnomad4 NFE
AF:
0.115
Gnomad4 OTH
AF:
0.117
Alfa
AF:
0.121
Hom.:
259
Bravo
AF:
0.138
Asia WGS
AF:
0.327
AC:
1137
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Benign, no assertion criteria providedclinical testingMayo Clinic Laboratories, Mayo ClinicDec 16, 2015- -
Benign, criteria provided, single submitterclinical testingGeneDxMar 03, 2015- -
Likely benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Glycogen storage disease, type II Benign:1
Benign, criteria provided, single submitterclinical testingGenome-Nilou LabJun 10, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-1.0
CADD
Benign
0.17
DANN
Benign
0.36

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.

Other links and lift over

dbSNP: rs2304831; hg19: chr17-78090932; COSMIC: COSV56406922; COSMIC: COSV56406922; API