10-52282205-T-C

Position:

• chr10-52282205-T-C

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP2 PP3_Strong

The NM_006258.4(PRKG1):​c.1598T>C​(p.Phe533Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. F533F) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PRKG1 NM_006258.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.01

Genes affected

PRKG1 (HGNC:9414): (protein kinase cGMP-dependent 1) Mammals have three different isoforms of cyclic GMP-dependent protein kinase (Ialpha, Ibeta, and II). These PRKG isoforms act as key mediators of the nitric oxide/cGMP signaling pathway and are important components of many signal transduction processes in diverse cell types. This PRKG1 gene on human chromosome 10 encodes the soluble Ialpha and Ibeta isoforms of PRKG by alternative transcript splicing. A separate gene on human chromosome 4, PRKG2, encodes the membrane-bound PRKG isoform II. The PRKG1 proteins play a central role in regulating cardiovascular and neuronal functions in addition to relaxing smooth muscle tone, preventing platelet aggregation, and modulating cell growth. This gene is most strongly expressed in all types of smooth muscle, platelets, cerebellar Purkinje cells, hippocampal neurons, and the lateral amygdala. Isoforms Ialpha and Ibeta have identical cGMP-binding and catalytic domains but differ in their leucine/isoleucine zipper and autoinhibitory sequences and therefore differ in their dimerization substrates and kinase enzyme activity. [provided by RefSeq, Sep 2011]

PRKG1-AS1 (HGNC:45029): (PRKG1 antisense RNA 1)

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 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), PRKG1. . Gene score misZ 2.982 (greater than the threshold 3.09). Trascript score misZ 3.8719 (greater than threshold 3.09). GenCC has associacion of gene with familial thoracic aortic aneurysm and aortic dissection, aortic aneurysm, familial thoracic 8.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.943

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRKG1	NM_006258.4	c.1598T>C	p.Phe533Ser	missense_variant	14/18	ENST00000373980.11
PRKG1	NM_001098512.3	c.1553T>C	p.Phe518Ser	missense_variant	14/18
PRKG1	NM_001374781.1	c.389T>C	p.Phe130Ser	missense_variant	10/14
PRKG1	XM_017016413.2	c.1295T>C	p.Phe432Ser	missense_variant	14/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRKG1	ENST00000373980.11	c.1598T>C	p.Phe533Ser	missense_variant	14/18	1	NM_006258.4
PRKG1-AS1	ENST00000452247.7	n.461+11710A>G		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Aortic aneurysm, familial thoracic 8 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 11, 2018

This sequence change replaces phenylalanine with serine at codon 533 of the PRKG1 protein (p.Phe533Ser). The phenylalanine residue is highly conserved and there is a large physicochemical difference between phenylalanine and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with PRKG1-related disease. ClinVar contains an entry for this variant (Variation ID: 407090). 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 disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Benign	0.40	T;T;.;.
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	.;D;.;D
M_CAP	Benign	0.010	T
MetaRNN	Pathogenic	0.94	D;D;D;D
MetaSVM	Benign	-1.2	T
MutationAssessor	Benign	1.4	L;L;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-7.5	D;.;.;D
REVEL	Pathogenic	0.75
Sift	Pathogenic	0.0	D;.;.;D
Sift4G	Pathogenic	0.0010	.;D;.;D
Polyphen		1.0	D;D;D;D
Vest4		0.95, 0.95
MutPred		0.84		Gain of disorder (P = 0.0621);Gain of disorder (P = 0.0621);.;.;
MVP		0.85
MPC		2.2
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.97
gMVP		0.94

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

Other links and lift over

dbSNP: rs1060501403; hg19: chr10-54041965;