Genetic Variant PPP6R1:p.Gly802Arg (chr19-55231465-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_014931.4(PPP6R1):c.2404G>C(p.Gly802Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,456,068 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PPP6R1
NM_014931.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.222

Publications

1 publications found

Variant links:

Genes affected

PPP6R1 (HGNC:29195): (protein phosphatase 6 regulatory subunit 1) Protein phosphatase regulatory subunits, such as SAPS1, modulate the activity of protein phosphatase catalytic subunits by restricting substrate specificity, recruiting substrates, and determining the intracellular localization of the holoenzyme. SAPS1 is a regulatory subunit for the protein phosphatase-6 catalytic subunit (PPP6C; MIM 612725) (Stefansson and Brautigan, 2006 [PubMed 16769727]).[supplied by OMIM, Nov 2010]

PPP6R1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0732972).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPP6R1	NM_014931.4 link	c.2404G>C	p.Gly802Arg	missense_variant	Exon 21 of 24	ENST00000412770.7	NP_055746.3	Q9UPN7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PPP6R1	ENST00000412770.7 link	c.2404G>C	p.Gly802Arg	missense_variant	Exon 21 of 24	1	NM_014931.4	ENSP00000414202.1	Q9UPN7
PPP6R1	ENST00000587283.5 link	c.2404G>C	p.Gly802Arg	missense_variant	Exon 20 of 23	1		ENSP00000467521.1	Q9UPN7
PPP6R1	ENST00000587457.1 link	n.1399G>C		non_coding_transcript_exon_variant	Exon 4 of 7	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1456068

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

723714

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33370

American (AMR)

AF:

0.00

AC:

AN:

43968

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25920

East Asian (EAS)

AF:

0.00

AC:

AN:

39498

South Asian (SAS)

AF:

0.00

AC:

AN:

84792

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52858

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5694

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1109808

Other (OTH)

AF:

0.00

AC:

AN:

60160

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0296732), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.57

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.023

T;T

Eigen

Benign

-0.76

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.31

LIST_S2

Benign

0.67

.;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.073

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;L

PhyloP100

0.22

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.96

N;.

REVEL

Benign

0.020

Sift

Uncertain

0.0060

D;.

Sift4G

Benign

0.085

T;T

Polyphen

0.0090

B;B

Vest4

0.25

MutPred

0.31

Gain of solvent accessibility (P = 0.0097);Gain of solvent accessibility (P = 0.0097);

MVP

0.043

MPC

0.064

ClinPred

0.16

GERP RS

2.8

Varity_R

0.041

gMVP

0.21

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over