8-26364429-T-G

Variant names:

• chr8-26364429-T-G
• rs17055163
• NM_002717.4:c.972+539T>G

Variant summary

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

The NM_002717.4(PPP2R2A):​c.972+539T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.202 in 152,104 control chromosomes in the GnomAD database, including 3,450 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 0.20 (3450 hom., cov: 32)
• Consequence: PPP2R2A NM_002717.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.473
• Publications: 6 publications found

Genes affected

PPP2R2A (HGNC:9304): (protein phosphatase 2 regulatory subunit Balpha) The product of this gene belongs to the phosphatase 2 regulatory subunit B family. Protein phosphatase 2 is one of the four major Ser/Thr phosphatases, and it is implicated in the negative control of cell growth and division. It consists of a common heteromeric core enzyme, which is composed of a catalytic subunit and a constant regulatory subunit, that associates with a variety of regulatory subunits. The B regulatory subunit might modulate substrate selectivity and catalytic activity. This gene encodes an alpha isoform of the regulatory subunit B55 subfamily. Alternatively spliced transcript variants have been described. [provided by RefSeq, Apr 2010]

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.304 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPP2R2A	NM_002717.4	c.972+539T>G		intron_variant	Intron 8 of 9	ENST00000380737.8	NP_002708.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPP2R2A	ENST00000380737.8	c.972+539T>G		intron_variant	Intron 8 of 9	1	NM_002717.4	ENSP00000370113.3

Frequencies

GnomAD3 genomes AF: 0.202 AC: 30658 AN: 151986 Hom.: 3436 Cov.: 32

Gnomad AFR AF: 0.308

Gnomad AMI AF: 0.161

Gnomad AMR AF: 0.185

Gnomad ASJ AF: 0.119

Gnomad EAS AF: 0.282

Gnomad SAS AF: 0.183

Gnomad FIN AF: 0.182

Gnomad MID AF: 0.127

Gnomad NFE AF: 0.145

Gnomad OTH AF: 0.187

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

GnomAD4 genome AF: 0.202 AC: 30722 AN: 152104 Hom.: 3450 Cov.: 32 AF XY: 0.202 AC XY: 15053 AN XY: 74356

African (AFR) AF: 0.309 AC: 12802 AN: 41476

American (AMR) AF: 0.185 AC: 2822 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.119 AC: 412 AN: 3468

East Asian (EAS) AF: 0.282 AC: 1458 AN: 5168

South Asian (SAS) AF: 0.184 AC: 884 AN: 4816

European-Finnish (FIN) AF: 0.182 AC: 1932 AN: 10594

Middle Eastern (MID) AF: 0.119 AC: 35 AN: 294

European-Non Finnish (NFE) AF: 0.145 AC: 9831 AN: 67990

Other (OTH) AF: 0.189 AC: 400 AN: 2114

Alfa AF: 0.159 Hom.: 9201

Bravo AF: 0.206

Asia WGS AF: 0.239 AC: 833 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	13
DANN	Benign	0.79
PhyloP100		0.47
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
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: rs17055163; hg19: chr8-26221945;