chr19-52212730-G-C

Position:

• chr19-52212730-G-C

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1 PM2 PP2 PP3_Moderate PP5_Moderate

The NM_014225.6(PPP2R1A):​c.548G>C​(p.Arg183Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PPP2R1A NM_014225.6 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 8.72

Genes affected

PPP2R1A (HGNC:9302): (protein phosphatase 2 scaffold subunit Aalpha) This gene encodes a constant regulatory subunit of protein phosphatase 2. 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 constant regulatory subunit A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. This gene encodes an alpha isoform of the constant regulatory subunit A. Alternatively spliced transcript variants have been described. [provided by RefSeq, Apr 2010]

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PM1: In a region_of_interest SV40 small T antigen binding (size 154) in uniprot entity 2AAA_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_014225.6
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PPP2R1A. . Gene score misZ 4.4565 (greater than the threshold 3.09). Trascript score misZ 5.4176 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, autosomal dominant 40, Houge-Janssens syndrome 2, complex neurodevelopmental disorder.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.885
• PP5: Variant 19-52212730-G-C is Pathogenic according to our data. Variant chr19-52212730-G-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 985103.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PPP2R1A	NM_014225.6	c.548G>C	p.Arg183Pro	missense_variant	5/15	ENST00000322088.11	NP_055040.2
PPP2R1A	NM_001363656.2	c.11G>C	p.Arg4Pro	missense_variant	5/15		NP_001350585.1
PPP2R1A	NR_033500.2	n.492G>C		non_coding_transcript_exon_variant	4/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PPP2R1A	ENST00000322088.11	c.548G>C	p.Arg183Pro	missense_variant	5/15	1	NM_014225.6	ENSP00000324804	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 28, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Pathogenic	34
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.95	D;.;.
Eigen	Pathogenic	0.99
Eigen_PC	Pathogenic	0.88
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	D;D;D
M_CAP	Benign	0.069	D
MetaRNN	Pathogenic	0.88	D;D;D
MetaSVM	Benign	-0.81	T
MutationAssessor	Pathogenic	4.0	H;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-6.7	D;.;.
REVEL	Uncertain	0.44
Sift	Pathogenic	0.0	D;.;.
Sift4G	Uncertain	0.0020	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.88
MutPred		0.72		Loss of ubiquitination at K188 (P = 0.0877);.;.;
MVP		0.82
MPC		3.2
ClinPred		1.0	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.9
Varity_R		0.99
gMVP		0.99

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

Other links and lift over

dbSNP: rs1057519947; hg19: chr19-52715983; COSMIC: COSV59042211; COSMIC: COSV59042211;