rs148791216

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_016203.4(PRKAG2):c.247C>T(p.Pro83Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000327 in 1,613,136 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 18/23 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P83L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00036 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00032 ( 3 hom. )

Consequence

PRKAG2
NM_016203.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:14

Conservation

PhyloP100: 0.917

Publications

3 publications found

Variant links:

Genes affected

PRKAG2 (HGNC:9386): (protein kinase AMP-activated non-catalytic subunit gamma 2) AMP-activated protein kinase (AMPK) is a heterotrimeric protein composed of a catalytic alpha subunit, a noncatalytic beta subunit, and a noncatalytic regulatory gamma subunit. Various forms of each of these subunits exist, encoded by different genes. AMPK is an important energy-sensing enzyme that monitors cellular energy status and functions by inactivating key enzymes involved in regulating de novo biosynthesis of fatty acid and cholesterol. This gene is a member of the AMPK gamma subunit family. Mutations in this gene have been associated with Wolff-Parkinson-White syndrome, familial hypertrophic cardiomyopathy, and glycogen storage disease of the heart. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jan 2015]

PRKAG2 Gene-Disease associations (from GenCC):

hypertrophic cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
hypertrophic cardiomyopathy 6
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
PRKAG2-related cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
lethal congenital glycogen storage disease of heart
Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia, Genomics England PanelApp
Wolff-Parkinson-White syndrome
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp

PRKAG2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013887823).

BP6

Variant 7-151781371-G-A is Benign according to our data. Variant chr7-151781371-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 45711.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000361 (55/152310) while in subpopulation AMR AF = 0.000915 (14/15304). AF 95% confidence interval is 0.000552. There are 0 homozygotes in GnomAd4. There are 30 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 55 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRKAG2	NM_016203.4 link	c.247C>T	p.Pro83Ser	missense_variant	Exon 3 of 16	ENST00000287878.9	NP_057287.2	Q9UGJ0-1A0A090N8Q6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRKAG2	ENST00000287878.9 link	c.247C>T	p.Pro83Ser	missense_variant	Exon 3 of 16	1	NM_016203.4	ENSP00000287878.3		Q9UGJ0-1

Frequencies

GnomAD3 genomes

AF:

0.000361

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000412

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000449

AC:

110

AN:

244752

AF XY:

0.000495

show subpopulations

Gnomad AFR exome

AF:

0.000199

Gnomad AMR exome

AF:

0.0000875

Gnomad ASJ exome

AF:

0.000707

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000511

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.000324

AC:

473

AN:

1460826

Hom.:

Cov.:

AF XY:

0.000374

AC XY:

272

AN XY:

726666

show subpopulations

African (AFR)

AF:

0.0000597

AC:

AN:

33476

American (AMR)

AF:

0.000202

AC:

AN:

44618

Ashkenazi Jewish (ASJ)

AF:

0.000306

AC:

AN:

26110

East Asian (EAS)

AF:

0.00

AC:

AN:

39678

South Asian (SAS)

AF:

0.00136

AC:

117

AN:

86216

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52946

Middle Eastern (MID)

AF:

0.00261

AC:

AN:

5744

European-Non Finnish (NFE)

AF:

0.000258

AC:

287

AN:

1111704

Other (OTH)

AF:

0.000580

AC:

AN:

60334

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

126

157

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.000361

AC:

AN:

152310

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74484

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41566

American (AMR)

AF:

0.000915

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5174

South Asian (SAS)

AF:

0.000830

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000412

AC:

AN:

68022

Other (OTH)

AF:

0.00142

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000589

Hom.:

Bravo

AF:

0.000506

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000461

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:14

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:5

Clinical Genetics, Academic Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

not specified

Benign:3

Apr 28, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Pro83Ser in exon 3 of PRKAG2: This variant has been reported in an HCM patient who carried a second, pathogenic HCM variant (Scheffold 2011). It is not expect ed to have clinical significance because it has been identified in various large populations including 0.14% (22/15396) of South Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs148791216) and is located outside the CBS domain region (residues 277-555) where all patho genic PRKAG2 variants have been identified to date. -

Feb 26, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 28, 2019

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiomyopathy

Benign:2

Dec 20, 2017

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Mar 23, 2018

Color Diagnostics, LLC DBA Color Health

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Wolff-Parkinson-White pattern

Uncertain:1

Oct 16, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Hypertrophic cardiomyopathy 6

Uncertain:1

Oct 16, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Heart failure

Benign:1

Mar 14, 2017

Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hypertrophic cardiomyopathy

Benign:1

Sep 23, 2024

All of Us Research Program, National Institutes of Health

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Apr 19, 2019

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Lethal congenital glycogen storage disease of heart

Benign:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

CardioboostCm

Benign

0.0015

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Benign

0.89

DEOGEN2

Benign

0.047

T;.

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.58

FATHMM_MKL

Uncertain

0.83

LIST_S2

Benign

0.80

T;T

M_CAP

Benign

0.036

MetaRNN

Benign

0.014

T;T

MetaSVM

Benign

-0.80

MutationAssessor

Benign

0.20

N;.

PhyloP100

0.92

PrimateAI

Benign

0.32

PROVEAN

Benign

0.010

N;N

REVEL

Benign

0.16

Sift

Benign

0.70

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.0010

B;.

Vest4

0.13

MVP

0.46

MPC

0.14

ClinPred

0.0022

GERP RS

1.6

Varity_R

0.028

gMVP

0.12

Mutation Taster

=99/1

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over