rs535265672

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_000294.3(PHKG2):​c.253G>A​(p.Ala85Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000515 in 1,610,386 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A85A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

PHKG2
NM_000294.3 missense

Scores

4
14

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.15391216).

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
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
PHKG2
NM_000294.3
MANE Select
c.253G>Ap.Ala85Thr
missense
Exon 3 of 10NP_000285.1
PHKG2
NM_001172432.2
c.253G>Ap.Ala85Thr
missense
Exon 3 of 11NP_001165903.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
PHKG2
ENST00000563588.6
TSL:1 MANE Select
c.253G>Ap.Ala85Thr
missense
Exon 3 of 10ENSP00000455607.1
PHKG2
ENST00000569762.1
TSL:1
n.230G>A
non_coding_transcript_exon
Exon 2 of 2
PHKG2
ENST00000328273.11
TSL:5
c.253G>Ap.Ala85Thr
missense
Exon 3 of 10ENSP00000329968.7

Frequencies

GnomAD3 genomes
AF:
0.0000788
AC:
12
AN:
152190
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000262
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:
0.0000735
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.0000403
AC:
10
AN:
248068
AF XY:
0.0000521
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000868
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000528
Gnomad OTH exome
AF:
0.000164
GnomAD4 exome
AF:
0.0000487
AC:
71
AN:
1458078
Hom.:
0
Cov.:
32
AF XY:
0.0000510
AC XY:
37
AN XY:
725522
show subpopulations
African (AFR)
AF:
0.0000597
AC:
2
AN:
33478
American (AMR)
AF:
0.000268
AC:
12
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86256
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49674
Middle Eastern (MID)
AF:
0.000173
AC:
1
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000477
AC:
53
AN:
1111982
Other (OTH)
AF:
0.0000497
AC:
3
AN:
60366
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.502
Heterozygous variant carriers
0
5
10
16
21
26
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000788
AC:
12
AN:
152308
Hom.:
0
Cov.:
33
AF XY:
0.0000403
AC XY:
3
AN XY:
74472
show subpopulations
African (AFR)
AF:
0.0000481
AC:
2
AN:
41560
American (AMR)
AF:
0.000261
AC:
4
AN:
15304
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000735
AC:
5
AN:
68026
Other (OTH)
AF:
0.000473
AC:
1
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.467
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000821
Hom.:
0
Bravo
AF:
0.0000831
ExAC
AF:
0.0000494
AC:
6
EpiCase
AF:
0.000273
EpiControl
AF:
0.00

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
not provided (2)
-
1
-
Glycogen storage disease IXc (1)
-
1
-
Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.10
BayesDel_addAF
Benign
-0.20
T
BayesDel_noAF
Benign
-0.29
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.24
T
Eigen
Benign
0.092
Eigen_PC
Benign
0.21
FATHMM_MKL
Uncertain
0.88
D
LIST_S2
Uncertain
0.95
D
M_CAP
Benign
0.018
T
MetaRNN
Benign
0.15
T
MetaSVM
Benign
-0.78
T
MutationAssessor
Benign
0.53
N
PhyloP100
2.1
PrimateAI
Uncertain
0.63
T
PROVEAN
Benign
-0.99
N
REVEL
Benign
0.068
Sift
Benign
0.076
T
Sift4G
Benign
0.52
T
Polyphen
0.56
P
Vest4
0.47
MVP
0.79
MPC
0.40
ClinPred
0.20
T
GERP RS
4.8
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
2.6
Varity_R
0.17
gMVP
0.21
Mutation Taster
=71/29
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.11
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs535265672; hg19: chr16-30762584; COSMIC: COSV100079903; COSMIC: COSV100079903; API