chr19-53882571-G-A

Position:

chr19-53882571-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 1P and 1B. PP2BP4

The NM_002739.5(PRKCG):c.77G>A(p.Arg26Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000564 in 1,613,954 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R26G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

PRKCG
NM_002739.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.05

Variant links:

Genes affected

PRKCG (HGNC:9402): (protein kinase C gamma) Protein kinase C (PKC) is a family of serine- and threonine-specific protein kinases that can be activated by calcium and second messenger diacylglycerol. PKC family members phosphorylate a wide variety of protein targets and are known to be involved in diverse cellular signaling pathways. PKC also serve as major receptors for phorbol esters, a class of tumor promoters. Each member of the PKC family has a specific expression profile and is believed to play distinct roles in cells. The protein encoded by this gene is one of the PKC family members. This protein kinase is expressed solely in the brain and spinal cord and its localization is restricted to neurons. It has been demonstrated that several neuronal functions, including long term potentiation (LTP) and long term depression (LTD), specifically require this kinase. Knockout studies in mice also suggest that this kinase may be involved in neuropathic pain development. Defects in this protein have been associated with neurodegenerative disorder spinocerebellar ataxia-14 (SCA14). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

PRKCG links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PRKCG. . Gene score misZ 3.0601 (greater than the threshold 3.09). Trascript score misZ 3.8304 (greater than threshold 3.09). GenCC has associacion of gene with spinocerebellar ataxia type 14.

BP4

Computational evidence support a benign effect (MetaRNN=0.28822452).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PRKCG	NM_002739.5 linkuse as main transcript	c.77G>A	p.Arg26Lys	missense_variant	1/18	ENST00000263431.4
PRKCG	NM_001316329.2 linkuse as main transcript	c.77G>A	p.Arg26Lys	missense_variant	1/19
PRKCG	XM_047439092.1 linkuse as main transcript	c.-308G>A		5_prime_UTR_variant	2/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRKCG	ENST00000263431.4 linkuse as main transcript	c.77G>A	p.Arg26Lys	missense_variant	1/18	1	NM_002739.5	P1	P05129-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251238

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135896

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:

0.0000528

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000581

AC:

AN:

1461788

Hom.:

Cov.:

AF XY:

0.0000605

AC XY:

AN XY:

727168

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.0000728

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000902

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

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

Aug 07, 2017

This sequence change replaces arginine with lysine at codon 26 of the PRKCG protein (p.Arg26Lys). The arginine residue is moderately conserved and there is a small physicochemical difference between arginine and lysine. This variant is present in population databases (rs763526841, ExAC 0.005%). In summary, this variant has uncertain impact on PRKCG function. The available evidence is currently insufficient to determine its role 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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but the clinical significance of these predictions is uncertain. A different missense substitution at this codon (p.Arg26Gly) has been reported to segregate with spinocerebellar ataxia in a large family (PMID: 22675081). This suggests that the Arg26 residue may be important for PRKCG protein function, but this prediction has not been confirmed by published functional studies. This variant has not been reported in the literature in individuals with a PRKCG-related disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.66

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.47

CADD

Uncertain

DANN

Benign

0.97

DEOGEN2

Benign

0.34

Eigen

Benign

0.098

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.81

LIST_S2

Uncertain

0.93

M_CAP

Pathogenic

0.36

MetaRNN

Benign

0.29

MetaSVM

Benign

-0.56

MutationAssessor

Benign

1.2

MutationTaster

Benign

0.54

N;N;N

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-1.2

REVEL

Benign

0.22

Sift

Benign

0.45

Sift4G

Benign

0.57

Polyphen

0.34

Vest4

0.084

MutPred

0.54

Gain of methylation at R26 (P = 0.027);

MVP

0.76

MPC

1.5

ClinPred

0.23

GERP RS

4.1

Varity_R

0.33

gMVP

0.81

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

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