chr7-44062771-G-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000290.4(PGAM2):c.755C>A(p.Ala252Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000186 in 1,614,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

PGAM2
NM_000290.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 2.50

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 made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.4109548).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PGAM2	NM_000290.4 link	c.755C>A	p.Ala252Asp	missense_variant	Exon 3 of 3	ENST00000297283.4	NP_000281.2	P15259
DBNL	NM_001014436.3 link	c.*1855G>T		3_prime_UTR_variant	Exon 13 of 13	ENST00000448521.6	NP_001014436.1	Q9UJU6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PGAM2	ENST00000297283.4 link	c.755C>A	p.Ala252Asp	missense_variant	Exon 3 of 3	1	NM_000290.4	ENSP00000297283.3	P15259
DBNL	ENST00000448521.6 link	c.*1855G>T		3_prime_UTR_variant	Exon 13 of 13	1	NM_001014436.3	ENSP00000411701.1	Q9UJU6-1
DBNL	ENST00000432854.5 link	c.*1855G>T		3_prime_UTR_variant	Exon 11 of 11	5		ENSP00000398931.1	H0Y5J4

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

251220

Hom.:

AF XY:

0.0000515

AC XY:

AN XY:

135808

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000260

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:

0.000163

GnomAD4 exome

AF:

0.0000144

AC:

AN:

1461848

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727220

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000425

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74348

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000718

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Glycogen storage disease type X

Uncertain:2

Jun 27, 2023

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 06, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 252 of the PGAM2 protein (p.Ala252Asp). This variant is present in population databases (rs752958758, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with PGAM2-related conditions. ClinVar contains an entry for this variant (Variation ID: 1060608). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.78

BayesDel_addAF

Benign

-0.084

BayesDel_noAF

Uncertain

-0.060

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.64

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.086

MetaRNN

Benign

0.41

MetaSVM

Uncertain

0.51

MutationAssessor

Pathogenic

4.2

PrimateAI

Uncertain

0.65

PROVEAN

Pathogenic

-4.6

REVEL

Uncertain

0.61

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

0.93

Vest4

0.42

MutPred

0.33

Loss of MoRF binding (P = 0.0398);

MVP

0.92

MPC

0.43

ClinPred

0.99

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.9

Varity_R

0.72

gMVP

0.80

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over