Genetic Variant NM_002862.4:c.10C>T (chr20-25248188-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

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

The NM_002862.4(PYGB):c.10C>T(p.Pro4Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000277 in 1,591,276 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 0.00019 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

PYGB
NM_002862.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.49

Variant links:

Genes affected

PYGB (HGNC:9723): (glycogen phosphorylase B) The protein encoded by this gene is a glycogen phosphorylase found predominantly in the brain. The encoded protein forms homodimers which can associate into homotetramers, the enzymatically active form of glycogen phosphorylase. The activity of this enzyme is positively regulated by AMP and negatively regulated by ATP, ADP, and glucose-6-phosphate. This enzyme catalyzes the rate-determining step in glycogen degradation. [provided by RefSeq, Jul 2008]

PYGB 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=0.3213331).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PYGB	NM_002862.4 link	c.10C>T	p.Pro4Ser	missense_variant	Exon 1 of 20	ENST00000216962.9	NP_002853.2	P11216
PYGB	XM_047440342.1 link	c.10C>T	p.Pro4Ser	missense_variant	Exon 1 of 16		XP_047296298.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PYGB	ENST00000216962.9 link	c.10C>T	p.Pro4Ser	missense_variant	Exon 1 of 20	1	NM_002862.4	ENSP00000216962.3		P11216

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.00

GnomAD3 exomes

AF:

0.0000350

AC:

AN:

228898

Hom.:

AF XY:

0.0000320

AC XY:

AN XY:

125108

show subpopulations

Gnomad AFR exome

AF:

0.000527

Gnomad AMR exome

AF:

0.0000322

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:

0.0000104

AC:

AN:

1438960

Hom.:

Cov.:

AF XY:

0.0000126

AC XY:

AN XY:

715224

show subpopulations

Gnomad4 AFR exome

AF:

0.000350

Gnomad4 AMR exome

AF:

0.0000238

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000266

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000336

GnomAD4 genome

AF:

0.000190

AC:

AN:

152316

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.000577

Gnomad4 AMR

AF:

0.000326

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:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.000196

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000578

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 02, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.10C>T (p.P4S) alteration is located in exon 1 (coding exon 1) of the PYGB gene. This alteration results from a C to T substitution at nucleotide position 10, causing the proline (P) at amino acid position 4 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.091

BayesDel_noAF

Uncertain

0.030

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.62

Eigen

Benign

0.12

Eigen_PC

Benign

0.21

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.96

M_CAP

Pathogenic

0.61

MetaRNN

Benign

0.32

MetaSVM

Uncertain

0.47

MutationAssessor

Uncertain

2.7

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-3.4

REVEL

Uncertain

0.63

Sift

Benign

0.058

Sift4G

Uncertain

0.024

Polyphen

0.32

Vest4

0.52

MVP

0.93

MPC

0.32

ClinPred

0.25

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.27

gMVP

0.53

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