Genetic Variant PRKAG3:p.Pro339Pro (chr2-218827079-G-A) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_ModerateBP6_ModerateBP7BS2

The NM_017431.4(PRKAG3):c.1017C>T(p.Pro339Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000288 in 1,613,182 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 Likely benign (★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00030 ( 0 hom. )

Consequence

PRKAG3
NM_017431.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: 0.0250

Variant links:

Genes affected

PRKAG3 (HGNC:9387): (protein kinase AMP-activated non-catalytic subunit gamma 3) The protein encoded by this gene is a regulatory subunit of the AMP-activated protein kinase (AMPK). AMPK is a heterotrimer consisting of an alpha catalytic subunit, and non-catalytic beta and gamma subunits. AMPK is an important energy-sensing enzyme that monitors cellular energy status. In response to cellular metabolic stresses, AMPK is activated, and thus phosphorylates and inactivates acetyl-CoA carboxylase (ACC) and beta-hydroxy beta-methylglutaryl-CoA reductase (HMGCR), key enzymes involved in regulating de novo biosynthesis of fatty acid and cholesterol. This subunit is one of the gamma regulatory subunits of AMPK. It is dominantly expressed in skeletal muscle. Studies of the pig counterpart suggest that this subunit may play a key role in the regulation of energy metabolism in skeletal muscle. [provided by RefSeq, Jul 2008]

PRKAG3 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.43).

BP6

Variant 2-218827079-G-A is Benign according to our data. Variant chr2-218827079-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2651899.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.025 with no splicing effect.

BS2

High AC in GnomAd4 at 33 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRKAG3	NM_017431.4 link	c.1017C>T	p.Pro339Pro	synonymous_variant	Exon 10 of 14		NP_059127.2	Q9UGI9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	Protein	UniProt
PRKAG3	ENST00000439262.7 link	c.1017C>T	p.Pro339Pro	synonymous_variant	Exon 10 of 14	1	ENSP00000397133.3	Q9UGI9-1
PRKAG3	ENST00000529249.5 link	c.1017C>T	p.Pro339Pro	synonymous_variant	Exon 10 of 13	1	ENSP00000436068.1	Q9UGI9-1
PRKAG3	ENST00000470307.6 link	n.971C>T		non_coding_transcript_exon_variant	Exon 9 of 11	5	ENSP00000419272.2	B4DUK8
PRKAG3	ENST00000490971.1 link	n.1175C>T		non_coding_transcript_exon_variant	Exon 9 of 9	2

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000191

AC:

AN:

251458

Hom.:

AF XY:

0.000213

AC XY:

AN XY:

135906

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.000308

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000296

AC:

432

AN:

1460974

Hom.:

Cov.:

AF XY:

0.000286

AC XY:

208

AN XY:

726794

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000128

Gnomad4 FIN exome

AF:

0.000150

Gnomad4 NFE exome

AF:

0.000344

Gnomad4 OTH exome

AF:

0.000431

GnomAD4 genome

AF:

0.000217

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000213

Hom.:

Bravo

AF:

0.000193

EpiCase

AF:

0.000436

EpiControl

AF:

0.000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Oct 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PRKAG3: BP4, BP7 -

PRKAG3-related disorder

Benign:1

Jun 30, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.43

CADD

Benign

8.0

DANN

Uncertain

1.0

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