NM_000292.3:c.849T>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000292.3(PHKA2):c.849T>A(p.Ile283Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00293 in 1,208,421 control chromosomes in the GnomAD database, including 45 homozygotes. There are 995 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 24 hom., 394 hem., cov: 23)

Exomes 𝑓: 0.0019 ( 21 hom. 601 hem. )

Consequence

PHKA2
NM_000292.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 2.16

Variant links:

Genes affected

PHKA2 (HGNC:8926): (phosphorylase kinase regulatory subunit alpha 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, and the hepatic isoform is encoded by this gene. 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, which are encoded by two different genes. 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 9A, also known as X-linked liver glycogenosis. Alternatively spliced transcript variants have been reported, but the full-length nature of these variants has not been determined.[provided by RefSeq, Feb 2010]

PHKA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.48).

BP6

Variant X-18941544-A-T is Benign according to our data. Variant chrX-18941544-A-T is described in ClinVar as [Benign]. Clinvar id is 255779.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.16 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.013 (1464/112491) while in subpopulation AFR AF= 0.042 (1302/30964). AF 95% confidence interval is 0.0402. There are 24 homozygotes in gnomad4. There are 394 alleles in male gnomad4 subpopulation. Median coverage is 23. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 24 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PHKA2	NM_000292.3 link	c.849T>A	p.Ile283Ile	synonymous_variant	Exon 8 of 33	ENST00000379942.5	NP_000283.1	P46019

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PHKA2	ENST00000379942.5 link	c.849T>A	p.Ile283Ile	synonymous_variant	Exon 8 of 33	1	NM_000292.3	ENSP00000369274.4		P46019

Frequencies

GnomAD3 genomes

AF:

0.0130

AC:

1462

AN:

112437

Hom.:

Cov.:

AF XY:

0.0114

AC XY:

394

AN XY:

34591

show subpopulations

Gnomad AFR

AF:

0.0421

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00782

Gnomad ASJ

AF:

0.00452

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0125

Gnomad NFE

AF:

0.000731

Gnomad OTH

AF:

0.0165

GnomAD3 exomes

AF:

0.00428

AC:

786

AN:

183449

Hom.:

AF XY:

0.00271

AC XY:

184

AN XY:

67887

show subpopulations

Gnomad AFR exome

AF:

0.0424

Gnomad AMR exome

AF:

0.00357

Gnomad ASJ exome

AF:

0.00561

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000524

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000757

Gnomad OTH exome

AF:

0.00552

GnomAD4 exome

AF:

0.00189

AC:

2073

AN:

1095930

Hom.:

Cov.:

AF XY:

0.00166

AC XY:

601

AN XY:

361332

show subpopulations

Gnomad4 AFR exome

AF:

0.0443

Gnomad4 AMR exome

AF:

0.00372

Gnomad4 ASJ exome

AF:

0.00552

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000111

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000490

Gnomad4 OTH exome

AF:

0.00450

GnomAD4 genome

AF:

0.0130

AC:

1464

AN:

112491

Hom.:

Cov.:

AF XY:

0.0114

AC XY:

394

AN XY:

34655

show subpopulations

Gnomad4 AFR

AF:

0.0420

Gnomad4 AMR

AF:

0.00781

Gnomad4 ASJ

AF:

0.00452

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000731

Gnomad4 OTH

AF:

0.0163

Alfa

AF:

0.00865

Hom.:

Bravo

AF:

0.0154

EpiCase

AF:

0.00104

EpiControl

AF:

0.000771

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Jun 09, 2016

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Feb 05, 2016

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:2

Nov 29, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Glycogen storage disease IXa1

Benign:1

Dec 31, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.48

CADD

Benign

7.2

DANN

Benign

0.81

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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