Genetic Variant PPP3CC:p.Ala219Thr (chr8-22513317-G-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_005605.5(PPP3CC):c.655G>A(p.Ala219Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000154 in 1,612,130 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 1 hom. )

Consequence

PPP3CC
NM_005605.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 10.0

Variant links:

Genes affected

PPP3CC (HGNC:9316): (protein phosphatase 3 catalytic subunit gamma) Calcineurin is a calcium-dependent, calmodulin-stimulated protein phosphatase involved in the downstream regulation of dopaminergic signal transduction. Calcineurin is composed of a regulatory subunit and a catalytic subunit. The protein encoded by this gene represents one of the regulatory subunits that has been found for calcineurin. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

PPP3CC links:

ENSG00000251034 (HGNC:):

ENSG00000251034 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07785115).

BS2

High AC in GnomAd4 at 17 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPP3CC	NM_005605.5 link	c.655G>A	p.Ala219Thr	missense_variant	Exon 6 of 14	ENST00000240139.10	NP_005596.2	P48454-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPP3CC	ENST00000240139.10 link	c.655G>A	p.Ala219Thr	missense_variant	Exon 6 of 14	1	NM_005605.5	ENSP00000240139.5		P48454-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

151922

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000224

AC:

AN:

249776

Hom.:

AF XY:

0.000281

AC XY:

AN XY:

135022

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000293

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000548

Gnomad SAS exome

AF:

0.00112

Gnomad FIN exome

AF:

0.0000463

Gnomad NFE exome

AF:

0.000168

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000159

AC:

232

AN:

1460208

Hom.:

Cov.:

AF XY:

0.000189

AC XY:

137

AN XY:

726404

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000505

Gnomad4 SAS exome

AF:

0.00120

Gnomad4 FIN exome

AF:

0.0000562

Gnomad4 NFE exome

AF:

0.000104

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000112

AC:

AN:

151922

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74212

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.0000903

Hom.:

Bravo

AF:

0.000106

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000264

AC:

EpiCase

AF:

0.000110

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 23, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.655G>A (p.A219T) alteration is located in exon 6 (coding exon 6) of the PPP3CC gene. This alteration results from a G to A substitution at nucleotide position 655, causing the alanine (A) at amino acid position 219 to be replaced by a threonine (T). 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

Benign

0.32

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.28

CADD

Pathogenic

DANN

Benign

0.32

DEOGEN2

Benign

0.34

.;T;.;.;T

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.076

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D;D;D;D

M_CAP

Benign

0.026

MetaRNN

Benign

0.078

T;T;T;T;T

MetaSVM

Benign

-0.84

MutationAssessor

Benign

-0.59

.;N;N;N;.

PrimateAI

Uncertain

0.55

PROVEAN

Uncertain

-2.8

D;D;D;D;D

REVEL

Uncertain

0.35

Sift

Benign

0.65

T;T;T;T;T

Sift4G

Benign

0.79

T;T;T;T;T

Polyphen

0.043

B;P;B;.;.

Vest4

0.74

MVP

0.38

MPC

0.59

ClinPred

0.15

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.26

gMVP

0.66

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