NM_005609.4:c.1494C>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_005609.4(PYGM):c.1494C>T(p.Pro498Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00609 in 1,613,600 control chromosomes in the GnomAD database, including 527 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.033 ( 282 hom., cov: 33)

Exomes 𝑓: 0.0033 ( 245 hom. )

Consequence

PYGM
NM_005609.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8O:1

Conservation

PhyloP100: -4.89

Publications

1 publications found

Variant links:

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]

PYGM Gene-Disease associations (from GenCC):

glycogen storage disease V
Inheritance: AR, AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, Genomics England PanelApp

PYGM links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BP6

Variant 11-64753097-G-A is Benign according to our data. Variant chr11-64753097-G-A is described in ClinVar as Benign. ClinVar VariationId is 95292.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-4.89 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.113 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PYGM	NM_005609.4 link	c.1494C>T	p.Pro498Pro	synonymous_variant	Exon 12 of 20	ENST00000164139.4	NP_005600.1	P11217-1
PYGM	NM_001164716.1 link	c.1230C>T	p.Pro410Pro	synonymous_variant	Exon 10 of 18		NP_001158188.1	P11217-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PYGM	ENST00000164139.4 link	c.1494C>T	p.Pro498Pro	synonymous_variant	Exon 12 of 20	1	NM_005609.4	ENSP00000164139.3		P11217-1
PYGM	ENST00000377432.7 link	c.1230C>T	p.Pro410Pro	synonymous_variant	Exon 10 of 18	2		ENSP00000366650.3		P11217-2

Frequencies

GnomAD3 genomes

AF:

0.0332

AC:

5047

AN:

152144

Hom.:

280

Cov.:

show subpopulations

Gnomad AFR

AF:

0.116

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0117

Gnomad ASJ

AF:

0.00346

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000294

Gnomad OTH

AF:

0.0220

GnomAD2 exomes

AF:

0.00862

AC:

2167

AN:

251466

AF XY:

0.00618

show subpopulations

Gnomad AFR exome

AF:

0.115

Gnomad AMR exome

AF:

0.00561

Gnomad ASJ exome

AF:

0.00347

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000325

Gnomad OTH exome

AF:

0.00310

GnomAD4 exome

AF:

0.00327

AC:

4774

AN:

1461338

Hom.:

245

Cov.:

AF XY:

0.00275

AC XY:

2002

AN XY:

727002

show subpopulations

African (AFR)

AF:

0.113

AC:

3794

AN:

33458

American (AMR)

AF:

0.00640

AC:

286

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00333

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000255

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.00277

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.000156

AC:

173

AN:

1111546

Other (OTH)

AF:

0.00656

AC:

396

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

315

630

944

1259

1574

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

116

232

348

464

580

<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:

0.0332

AC:

5053

AN:

152262

Hom.:

282

Cov.:

AF XY:

0.0313

AC XY:

2327

AN XY:

74450

show subpopulations

African (AFR)

AF:

0.115

AC:

4797

AN:

41534

American (AMR)

AF:

0.0116

AC:

178

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00346

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000294

AC:

AN:

68022

Other (OTH)

AF:

0.0218

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

232

464

697

929

1161

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

150

200

250

<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:

0.0130

Hom.:

152

Bravo

AF:

0.0371

Asia WGS

AF:

0.00433

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.000356

ClinVar

Significance: Benign

Submissions summary: Benign:8Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Glycogen storage disease, type V

Benign:3Other:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

GeneReviews

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Sep 16, 2020

Natera, Inc.

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

not provided

Benign:3

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

May 24, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:2

May 06, 2013

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

2.0

(source)

DANN

Benign

0.74

PhyloP100

-4.9

Mutation Taster

=97/3

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over