rs1180121813

Variant names:

• chr19-53892567-C-T
• rs1180121813
• NM_002739.5:c.745C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PP2 PP3_Moderate BS2_Supporting

The NM_002739.5(PRKCG):​c.745C>T​(p.Arg249Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000434 in 1,613,436 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: PRKCG NM_002739.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.27
• Publications: 2 publications found

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 Gene-Disease associations (from GenCC):

• spinocerebellar ataxia type 14

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PP2: Missense variant in the PRKCG gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 36 curated pathogenic missense variants (we use a threshold of 10). The gene has 5 curated benign missense variants. Gene score misZ: 3.0601 (below the threshold of 3.09). Trascript score misZ: 3.8304 (above the threshold of 3.09). GenCC associations: The gene is linked to spinocerebellar ataxia type 14.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.922
• BS2: High AC in GnomAdExome4 at 5 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002739.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKCG	NM_002739.5	MANE Select	c.745C>T	p.Arg249Trp	missense	Exon 7 of 18	NP_002730.1
	PRKCG	NM_001316329.2		c.745C>T	p.Arg249Trp	missense	Exon 7 of 19	NP_001303258.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKCG	ENST00000263431.4	TSL:1 MANE Select	c.745C>T	p.Arg249Trp	missense	Exon 7 of 18	ENSP00000263431.3
	PRKCG	ENST00000682028.1		c.745C>T	p.Arg249Trp	missense	Exon 7 of 19	ENSP00000507230.1
	PRKCG	ENST00000683513.1		c.745C>T	p.Arg249Trp	missense	Exon 7 of 17	ENSP00000506809.1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152128 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000241

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461308 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 726966

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86230

European-Finnish (FIN) AF: 0.0000189 AC: 1 AN: 52930

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111976

Other (OTH) AF: 0.00 AC: 0 AN: 60378

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152128 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74308

African (AFR) AF: 0.0000241 AC: 1 AN: 41418

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Pathogenic	30
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.87	D
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.92	D
MetaSVM	Uncertain	-0.11	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		2.3
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-6.2	D
REVEL	Pathogenic	0.66
Sift	Uncertain	0.0080	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.69
MutPred		0.79		Loss of disorder (P = 0.0636)
MVP		0.74
MPC		1.3
ClinPred		0.98	D
GERP RS		1.8
Varity_R		0.32
gMVP		0.82
Mutation Taster		=39/61	disease causing

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

Other links and lift over

dbSNP: rs1180121813; hg19: chr19-54395821;