Genetic Variant PPP2R3C:p.Ser386Leu (chr14-35087967-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_017917.4(PPP2R3C):c.1157C>T(p.Ser386Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000692 in 1,444,698 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

PPP2R3C
NM_017917.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.26

Variant links:

Genes affected

PPP2R3C (HGNC:17485): (protein phosphatase 2 regulatory subunit B''gamma) This gene encodes a regulatory subunit of the serine/threonine phosphatase, protein phosphatase 2. This protein is localized to both nuclear and cytoplasmic regions depending on cell cycle phase. Homozygous conditional knockout mice for this gene exhibit reduced numbers and impaired proliferation of immune system B cells. This protein may regulate the expression of the P-glycoprotein ATP-binding cassette transporter through its phosphatase activity. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2015]

PPP2R3C links:

ENSG00000279434 (HGNC:):

ENSG00000279434 links:

FAM177A1 (HGNC:19829): (family with sequence similarity 177 member A1) This gene encodes a member of a conserved protein family. Alternative splicing results in multiple transcript variants. This gene is thought to be associated with susceptibility to juvenile idiopathic arthritis. [provided by RefSeq, Apr 2017]

FAM177A1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPP2R3C	NM_017917.4 link	c.1157C>T	p.Ser386Leu	missense_variant	Exon 12 of 13	ENST00000261475.10	NP_060387.2	Q969Q6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPP2R3C	ENST00000261475.10 link	c.1157C>T	p.Ser386Leu	missense_variant	Exon 12 of 13	1	NM_017917.4	ENSP00000261475.5		Q969Q6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251118

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135774

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.92e-7

AC:

AN:

1444698

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

719832

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.12e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 19, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1157C>T (p.S386L) alteration is located in exon 12 (coding exon 12) of the PPP2R3C gene. This alteration results from a C to T substitution at nucleotide position 1157, causing the serine (S) at amino acid position 386 to be replaced by a leucine (L). 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

0.092

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.24

T;T

Eigen

Benign

0.067

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Benign

0.028

MetaRNN

Uncertain

0.55

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.82

L;.

PrimateAI

Pathogenic

0.84

PROVEAN

Uncertain

-3.0

D;D

REVEL

Uncertain

0.45

Sift

Benign

0.25

T;T

Sift4G

Benign

0.32

T;T

Polyphen

0.0050

B;.

Vest4

0.91

MutPred

0.51

Loss of disorder (P = 0.0279);.;

MVP

0.76

MPC

0.36

ClinPred

0.96

GERP RS

5.5

Varity_R

0.29

gMVP

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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