14-101819040-C-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001352913.2(PPP2R5C):c.259+32857C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000715 in 1,399,306 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: PPP2R5C NM_001352913.2 intron
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.127

Genes affected

PPP2R5C (HGNC:9311): (protein phosphatase 2 regulatory subunit B'gamma) The product of this gene belongs to the phosphatase 2A regulatory subunit B family. Protein phosphatase 2A 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 a gamma isoform of the regulatory subunit B56 subfamily. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06727147).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PPP2R5C	NM_001352913.2	c.259+32857C>A		intron_variant		ENST00000694906.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PPP2R5C	ENST00000694906.1	c.259+32857C>A		intron_variant			NM_001352913.2	P3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.15e-7 AC: 1 AN: 1399306 Hom.: 0 Cov.: 30 AF XY: 0.00000145 AC XY: 1 AN XY: 690174

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000280

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 05, 2023

The c.142C>A (p.L48I) alteration is located in exon 3 (coding exon 3) of the PPP2R5C gene. This alteration results from a C to A substitution at nucleotide position 142, causing the leucine (L) at amino acid position 48 to be replaced by an isoleucine (I). 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
BayesDel_addAF	Benign	-0.35	T
BayesDel_noAF	Benign	-0.74
Cadd	Benign	2.4
Dann	Benign	0.84
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.040	N
LIST_S2	Benign	0.25	T;T
M_CAP	Benign	0.0021	T
MetaRNN	Benign	0.067	T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N
PROVEAN	Benign	-0.16	N;N
REVEL	Benign	0.0050
Sift	Benign	0.12	T;T
Sift4G	Benign	0.34	T;T
Vest4		0.19
MutPred		0.24		Loss of catalytic residue at L48 (P = 0.0496);.;
MVP		0.35
MPC		1.1
ClinPred		0.038	T
GERP RS		-0.078
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.12

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-102285377;