rs7784818

Variant names:

• chr7-151766426-A-G
• rs7784818
• NM_016203.4:c.466+14726T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_016203.4(PRKAG2):​c.466+14726T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.46 in 152,046 control chromosomes in the GnomAD database, including 16,644 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.46 (16644 hom., cov: 32)
• Consequence: PRKAG2 NM_016203.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.719
• Publications: 6 publications found

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

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.716 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRKAG2	NM_016203.4	c.466+14726T>C		intron_variant	Intron 3 of 15	ENST00000287878.9	NP_057287.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRKAG2	ENST00000287878.9	c.466+14726T>C		intron_variant	Intron 3 of 15	1	NM_016203.4	ENSP00000287878.3

Frequencies

GnomAD3 genomes AF: 0.461 AC: 69991 AN: 151928 Hom.: 16641 Cov.: 32

Gnomad AFR AF: 0.357

Gnomad AMI AF: 0.549

Gnomad AMR AF: 0.436

Gnomad ASJ AF: 0.629

Gnomad EAS AF: 0.734

Gnomad SAS AF: 0.561

Gnomad FIN AF: 0.447

Gnomad MID AF: 0.516

Gnomad NFE AF: 0.493

Gnomad OTH AF: 0.475

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.460 AC: 70017 AN: 152046 Hom.: 16644 Cov.: 32 AF XY: 0.464 AC XY: 34477 AN XY: 74334

African (AFR) AF: 0.357 AC: 14797 AN: 41462

American (AMR) AF: 0.436 AC: 6659 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.629 AC: 2184 AN: 3470

East Asian (EAS) AF: 0.735 AC: 3797 AN: 5164

South Asian (SAS) AF: 0.561 AC: 2699 AN: 4814

European-Finnish (FIN) AF: 0.447 AC: 4723 AN: 10574

Middle Eastern (MID) AF: 0.517 AC: 152 AN: 294

European-Non Finnish (NFE) AF: 0.493 AC: 33507 AN: 67964

Other (OTH) AF: 0.472 AC: 999 AN: 2116

Alfa AF: 0.477 Hom.: 4965

Bravo AF: 0.457

Asia WGS AF: 0.589 AC: 2049 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	0.20
DANN	Benign	0.43
PhyloP100		-0.72
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs7784818; hg19: chr7-151463512; COSMIC: COSV55240948;