Variant 2-28752145-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP2BP4

The NM_002709.3(PPP1CB):c.21C>A(p.Asn7Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N7T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

PPP1CB
NM_002709.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.62

Variant links:

Genes affected

PPP1CB (HGNC:9282): (protein phosphatase 1 catalytic subunit beta) The protein encoded by this gene is one of the three catalytic subunits of protein phosphatase 1 (PP1). PP1 is a serine/threonine specific protein phosphatase known to be involved in the regulation of a variety of cellular processes, such as cell division, glycogen metabolism, muscle contractility, protein synthesis, and HIV-1 viral transcription. Mouse studies suggest that PP1 functions as a suppressor of learning and memory. Two alternatively spliced transcript variants encoding distinct isoforms have been observed. [provided by RefSeq, Jul 2008]

PPP1CB 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;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PPP1CB. . Gene score misZ 4.3319 (greater than the threshold 3.09). Trascript score misZ 4.7349 (greater than threshold 3.09). GenCC has associacion of gene with Noonan syndrome-like disorder with loose anagen hair 2, Noonan syndrome-like disorder with loose anagen hair.

BP4

Computational evidence support a benign effect (MetaRNN=0.29462877).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PPP1CB	NM_002709.3 linkuse as main transcript	c.21C>A	p.Asn7Lys	missense_variant	1/8	ENST00000395366.3
PPP1CB	NM_206876.2 linkuse as main transcript	c.21C>A	p.Asn7Lys	missense_variant	2/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PPP1CB	ENST00000395366.3 linkuse as main transcript	c.21C>A	p.Asn7Lys	missense_variant	1/8	1	NM_002709.3	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1397104

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

689100

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 27, 2021

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C35"). This variant has not been reported in the literature in individuals affected with PPP1CB-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 7 of the PPP1CB protein (p.Asn7Lys). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.66

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.41

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.024

.;T;T;T;T

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.064

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.82

T;T;T;.;.

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.29

T;T;T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Uncertain

2.8

.;.;M;M;M

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Pathogenic

0.95

PROVEAN

Benign

-2.1

N;N;N;N;N

REVEL

Benign

0.14

Sift

Uncertain

0.0020

D;D;D;D;D

Sift4G

Benign

0.12

T;T;T;T;T

Polyphen

0.0010

.;.;B;B;B

Vest4

0.51, 0.50

MutPred

0.60

Gain of ubiquitination at N7 (P = 0.0185);Gain of ubiquitination at N7 (P = 0.0185);Gain of ubiquitination at N7 (P = 0.0185);Gain of ubiquitination at N7 (P = 0.0185);Gain of ubiquitination at N7 (P = 0.0185);

MVP

0.52

MPC

2.1

ClinPred

0.95

GERP RS

2.9

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

2.8

Varity_R

0.32

gMVP

0.87

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over