1-2173976-C-A

Variant names:

• chr1-2173976-C-A
• rs113812918
• NM_002744.6:c.1365C>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_002744.6(PRKCZ):​c.1365C>A​(p.Thr455Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,478 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T455T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PRKCZ NM_002744.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -3.52
• Publications: 0 publications found

Genes affected

PRKCZ (HGNC:9412): (protein kinase C zeta) Protein kinase C (PKC) zeta is a member of the PKC family of serine/threonine kinases which are involved in a variety of cellular processes such as proliferation, differentiation and secretion. Unlike the classical PKC isoenzymes which are calcium-dependent, PKC zeta exhibits a kinase activity which is independent of calcium and diacylglycerol but not of phosphatidylserine. Furthermore, it is insensitive to typical PKC inhibitors and cannot be activated by phorbol ester. Unlike the classical PKC isoenzymes, it has only a single zinc finger module. These structural and biochemical properties indicate that the zeta subspecies is related to, but distinct from other isoenzymes of PKC. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BP7: Synonymous conserved (PhyloP=-3.52 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002744.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKCZ	NM_002744.6	MANE Select	c.1365C>A	p.Thr455Thr	synonymous	Exon 14 of 18	NP_002735.3
	PRKCZ	NM_001242874.3		c.1053C>A	p.Thr351Thr	synonymous	Exon 11 of 15	NP_001229803.1	Q05513-3
	PRKCZ	NM_001350803.2		c.840C>A	p.Thr280Thr	synonymous	Exon 11 of 15	NP_001337732.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKCZ	ENST00000378567.8	TSL:1 MANE Select	c.1365C>A	p.Thr455Thr	synonymous	Exon 14 of 18	ENSP00000367830.3	Q05513-1
	PRKCZ	ENST00000400921.6	TSL:1	c.816C>A	p.Thr272Thr	synonymous	Exon 11 of 15	ENSP00000383712.2	Q05513-2
	PRKCZ	ENST00000965048.1		c.1638C>A	p.Thr546Thr	synonymous	Exon 15 of 19	ENSP00000635107.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460478 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726480

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

African (AFR) AF: 0.00 AC: 0 AN: 33424

American (AMR) AF: 0.00 AC: 0 AN: 44530

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26082

East Asian (EAS) AF: 0.00 AC: 0 AN: 39574

South Asian (SAS) AF: 0.00 AC: 0 AN: 85930

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5758

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111460

Other (OTH) AF: 0.0000166 AC: 1 AN: 60334

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	0.12
DANN	Benign	0.69
PhyloP100		-3.5
Mutation Taster		=98/2	polymorphism

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs113812918; hg19: chr1-2105415;