chr14-35095164-T-C

Variant names:

• chr14-35095164-T-C
• NM_017917.4:c.859A>G

Variant summary

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

The NM_017917.4(PPP2R3C):​c.859A>G​(p.Lys287Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PPP2R3C NM_017917.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.90

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]

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]

LOC101927178 (HGNC:):

ACMG classification

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	c.859A>G	p.Lys287Glu	missense_variant	Exon 10 of 13	ENST00000261475.10	NP_060387.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPP2R3C	ENST00000261475.10	c.859A>G	p.Lys287Glu	missense_variant	Exon 10 of 13	1	NM_017917.4	ENSP00000261475.5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jul 26, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.859A>G (p.K287E) alteration is located in exon 10 (coding exon 10) of the PPP2R3C gene. This alteration results from a A to G substitution at nucleotide position 859, causing the lysine (K) at amino acid position 287 to be replaced by a glutamic acid (E). 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	Uncertain	0.50
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.075	T;T
Eigen	Benign	-0.047
Eigen_PC	Benign	0.16
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.031	D
MetaRNN	Uncertain	0.46	T;T
MetaSVM	Benign	-0.89	T
MutationAssessor	Benign	1.1	L;.
PrimateAI	Pathogenic	0.89	D
PROVEAN	Benign	-1.5	N;N
REVEL	Uncertain	0.33
Sift	Benign	0.18	T;T
Sift4G	Benign	0.65	T;T
Polyphen		0.029	B;.
Vest4		0.86
MutPred		0.35		Loss of ubiquitination at K287 (P = 0.0092);.;
MVP		0.72
MPC		0.60
ClinPred		0.89	D
GERP RS		5.3
Varity_R		0.31
gMVP		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-35564370;