Genetic Variant PGAM2:p.Glu236Ala (chr7-44062819-T-G) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_000290.4(PGAM2):c.707A>C(p.Glu236Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000459 in 1,614,202 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00033 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00047 ( 8 hom. )

Consequence

PGAM2
NM_000290.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3O:1

Conservation

PhyloP100: 7.79

Publications

2 publications found

Variant links:

Genes affected

PGAM2 (HGNC:8889): (phosphoglycerate mutase 2) Phosphoglycerate mutase (PGAM) catalyzes the reversible reaction of 3-phosphoglycerate (3-PGA) to 2-phosphoglycerate (2-PGA) in the glycolytic pathway. The PGAM is a dimeric enzyme containing, in different tissues, different proportions of a slow-migrating muscle (MM) isozyme, a fast-migrating brain (BB) isozyme, and a hybrid form (MB). This gene encodes muscle-specific PGAM subunit. Mutations in this gene cause muscle phosphoglycerate mutase eficiency, also known as glycogen storage disease X. [provided by RefSeq, Sep 2009]

PGAM2 links:

DBNL (HGNC:2696): (drebrin like) Enables cadherin binding activity. Predicted to be involved in several processes, including Rac protein signal transduction; nervous system development; and podosome assembly. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

DBNL links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.027874857).

BP6

Variant 7-44062819-T-G is Benign according to our data. Variant chr7-44062819-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 440991.

BS1

Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.000472 (690/1461890) while in subpopulation MID AF = 0.0132 (76/5768). AF 95% confidence interval is 0.0108. There are 8 homozygotes in GnomAdExome4. There are 440 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 8 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000290.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PGAM2	NM_000290.4	MANE Select	c.707A>C	p.Glu236Ala	missense	Exon 3 of 3	NP_000281.2	P15259
DBNL	NM_001014436.3	MANE Select	c.*1903T>G		3_prime_UTR	Exon 13 of 13	NP_001014436.1	Q9UJU6-1
DBNL	NM_001122956.2		c.*1903T>G		3_prime_UTR	Exon 13 of 13	NP_001116428.1	Q9UJU6-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PGAM2	ENST00000297283.4	TSL:1 MANE Select	c.707A>C	p.Glu236Ala	missense	Exon 3 of 3	ENSP00000297283.3	P15259
DBNL	ENST00000448521.6	TSL:1 MANE Select	c.*1903T>G		3_prime_UTR	Exon 13 of 13	ENSP00000411701.1	Q9UJU6-1
PGAM2	ENST00000971360.1		c.704A>C	p.Glu235Ala	missense	Exon 3 of 3	ENSP00000641419.1

Frequencies

GnomAD3 genomes

AF:

0.000329

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00248

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000470

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000696

AC:

175

AN:

251420

AF XY:

0.000964

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.000325

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000472

AC:

690

AN:

1461890

Hom.:

Cov.:

AF XY:

0.000605

AC XY:

440

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.000112

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00405

AC:

349

AN:

86258

European-Finnish (FIN)

AF:

0.0000749

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.0132

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000195

AC:

217

AN:

1112008

Other (OTH)

AF:

0.000629

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

143

190

238

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.000335

AC:

AN:

152312

Hom.:

Cov.:

AF XY:

0.000443

AC XY:

AN XY:

74472

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41560

American (AMR)

AF:

0.0000653

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00269

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000470

AC:

AN:

68032

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.000327

Hom.:

Bravo

AF:

0.000298

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000799

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000654

EpiControl

AF:

0.000711

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Glycogen storage disease type X (3)

not provided (1)

PGAM2-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.069

BayesDel_noAF

Uncertain

0.13

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.57

Eigen

Benign

-0.011

Eigen_PC

Benign

0.16

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.024

MetaRNN

Benign

0.028

MetaSVM

Benign

-0.55

MutationAssessor

Benign

1.9

PhyloP100

7.8

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-2.6

REVEL

Uncertain

0.54

Sift

Benign

0.32

Sift4G

Benign

0.32

Polyphen

0.0030

Vest4

0.67

MVP

0.91

MPC

0.13

ClinPred

0.095

GERP RS

5.0

Varity_R

0.36

gMVP

0.69

Mutation Taster

=18/82

disease causing

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over