Genetic Variant NM_000294.3:c.253G>T (chr16-30751263-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000294.3(PHKG2):c.253G>T(p.Ala85Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A85T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

PHKG2
NM_000294.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.11

Publications

3 publications found

Variant links:

Genes affected

PHKG2 (HGNC:8931): (phosphorylase kinase catalytic subunit gamma 2) Phosphorylase kinase is a polymer of 16 subunits, four each of alpha, beta, gamma and delta. The alpha subunit includes the skeletal muscle and hepatic isoforms, encoded by two different genes. The beta subunit is the same in both the muscle and hepatic isoforms, and encoded by one gene. The gamma subunit also includes the skeletal muscle and hepatic isoforms, and the hepatic isoform is encoded by this gene. The delta subunit is a calmodulin and can be encoded by three different genes. The gamma subunits contain the active site of the enzyme, whereas the alpha and beta subunits have regulatory functions controlled by phosphorylation. The delta subunit mediates the dependence of the enzyme on calcium concentration. Mutations in this gene cause glycogen storage disease type 9C, also known as autosomal liver glycogenosis. Alternatively spliced transcript variants encoding different isoforms have been identified in this gene.[provided by RefSeq, Feb 2010]

PHKG2 Gene-Disease associations (from GenCC):

glycogen storage disease IXc
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp, PanelApp Australia, Labcorp Genetics (formerly Invitae)
glycogen storage disease due to liver phosphorylase kinase deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

PHKG2 links:

ENSG00000260899 (HGNC:):

ENSG00000260899 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17436701).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000294.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PHKG2	NM_000294.3	MANE Select	c.253G>T	p.Ala85Ser	missense	Exon 3 of 10	NP_000285.1
	PHKG2	NM_001172432.2		c.253G>T	p.Ala85Ser	missense	Exon 3 of 11	NP_001165903.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PHKG2	ENST00000563588.6	TSL:1 MANE Select	c.253G>T	p.Ala85Ser	missense	Exon 3 of 10	ENSP00000455607.1
PHKG2	ENST00000569762.1	TSL:1	n.230G>T		non_coding_transcript_exon	Exon 2 of 2
PHKG2	ENST00000328273.11	TSL:5	c.253G>T	p.Ala85Ser	missense	Exon 3 of 10	ENSP00000329968.7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

248068

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1458080

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725524

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49676

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111982

Other (OTH)

AF:

0.00

AC:

AN:

60366

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.083

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Benign

0.89

DEOGEN2

Benign

0.17

Eigen

Benign

-0.21

Eigen_PC

Benign

0.0042

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.86

M_CAP

Benign

0.0074

MetaRNN

Benign

0.17

MetaSVM

Benign

-0.81

MutationAssessor

Benign

-0.70

PhyloP100

2.1

PrimateAI

Uncertain

0.60

PROVEAN

Benign

0.070

REVEL

Benign

0.036

Sift

Benign

0.86

Sift4G

Benign

0.94

Polyphen

0.0010

Vest4

0.23

MutPred

0.36

Gain of disorder (P = 0.0362)

MVP

0.75

MPC

0.34

ClinPred

0.58

GERP RS

4.8

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.6

Varity_R

0.14

gMVP

0.18

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over