1-56691485-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_006252.4(PRKAA2):c.328C>T(p.Arg110Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000275 in 1,597,614 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

PRKAA2
NM_006252.4 missense, splice_region

Scores

Splicing: ADA: 0.08353

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.17

Variant links:

Genes affected

PRKAA2 (HGNC:9377): (protein kinase AMP-activated catalytic subunit alpha 2) The protein encoded by this gene is a catalytic 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. Studies of the mouse counterpart suggest that this catalytic subunit may control whole-body insulin sensitivity and is necessary for maintaining myocardial energy homeostasis during ischemia. [provided by RefSeq, Jul 2008]

PRKAA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.76

BS2

High AC in GnomAd at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRKAA2	NM_006252.4 linkuse as main transcript	c.328C>T	p.Arg110Trp	missense_variant, splice_region_variant	3/9	ENST00000371244.9
PRKAA2	XM_017001693.2 linkuse as main transcript	c.58C>T	p.Arg20Trp	missense_variant, splice_region_variant	3/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRKAA2	ENST00000371244.9 linkuse as main transcript	c.328C>T	p.Arg110Trp	missense_variant, splice_region_variant	3/9	1	NM_006252.4	P1

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151950

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000559

AC:

AN:

250522

Hom.:

AF XY:

0.0000665

AC XY:

AN XY:

135406

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000262

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.0000329

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000256

AC:

AN:

1445664

Hom.:

Cov.:

AF XY:

0.0000292

AC XY:

AN XY:

720108

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000761

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000182

Gnomad4 OTH exome

AF:

0.0000502

GnomAD4 genome

AF:

0.0000461

AC:

AN:

151950

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74208

show subpopulations

Gnomad4 AFR

AF:

0.0000484

Gnomad4 AMR

AF:

0.000197

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000130

Hom.:

Bravo

AF:

0.0000793

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 29, 2023

The c.328C>T (p.R110W) alteration is located in exon 3 (coding exon 3) of the PRKAA2 gene. This alteration results from a C to T substitution at nucleotide position 328, causing the arginine (R) at amino acid position 110 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.74

BayesDel_addAF

Benign

-0.029

BayesDel_noAF

Uncertain

0.020

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.43

T;T

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.85

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Benign

0.054

MetaRNN

Pathogenic

0.76

D;D

MetaSVM

Benign

-0.91

MutationAssessor

Pathogenic

2.9

M;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.78

PROVEAN

Pathogenic

-5.5

D;.

REVEL

Uncertain

0.41

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

D;.

Vest4

0.70

MutPred

0.60

Loss of disorder (P = 0.0174);Loss of disorder (P = 0.0174);

MVP

0.87

MPC

1.4

ClinPred

0.72

GERP RS

2.8

Varity_R

0.71

gMVP

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.084

dbscSNV1_RF

Benign

0.26

SpliceAI score (max)

0.16

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