NM_174936.4:c.706G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PP3_ModerateBS2_Supporting

The NM_174936.4(PCSK9):c.706G>A(p.Gly236Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000384 in 1,613,126 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 0.000033 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000039 ( 0 hom. )

Consequence

PCSK9
NM_174936.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 6.60

Variant links:

Genes affected

PCSK9 (HGNC:20001): (proprotein convertase subtilisin/kexin type 9) This gene encodes a member of the subtilisin-like proprotein convertase family, which includes proteases that process protein and peptide precursors trafficking through regulated or constitutive branches of the secretory pathway. The encoded protein undergoes an autocatalytic processing event with its prosegment in the ER and is constitutively secreted as an inactive protease into the extracellular matrix and trans-Golgi network. It is expressed in liver, intestine and kidney tissues and escorts specific receptors for lysosomal degradation. It plays a role in cholesterol and fatty acid metabolism. Mutations in this gene have been associated with autosomal dominant familial hypercholesterolemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

PCSK9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.86

BS2

High AC in GnomAd4 at 5 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCSK9	NM_174936.4 link	c.706G>A	p.Gly236Ser	missense_variant	Exon 5 of 12	ENST00000302118.5	NP_777596.2	Q8NBP7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCSK9	ENST00000302118.5 link	c.706G>A	p.Gly236Ser	missense_variant	Exon 5 of 12	1	NM_174936.4	ENSP00000303208.5		Q8NBP7-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000602

AC:

AN:

249196

Hom.:

AF XY:

0.0000666

AC XY:

AN XY:

135172

show subpopulations

Gnomad AFR exome

AF:

0.0000623

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000447

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000390

AC:

AN:

1460766

Hom.:

Cov.:

AF XY:

0.0000578

AC XY:

AN XY:

726700

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.000209

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000288

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152360

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000654

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hypercholesterolemia, autosomal dominant, 3

Uncertain:2

Jun 11, 2024

All of Us Research Program, National Institutes of Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces glycine with serine at codon 236 of the PCSK9 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). A functional study has shown this variant to cause a loss of PCSK9 function due to the failure of the mutant protein to exit the endoplasmic reticulum (PMID: 18266662). As a result, the cells expressing the mutant protein showed increased LDL uptake (PMID: 18266662). Consistent with this functional study, this variant has been reported in hypocholesterolemic individuals (PMID: 18266662, 34341098). To our knowledge, this variant has not been reported in individuals affected with PCSK9-related disorders in the literature. This variant has been identified in 16/280576 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Although available evidence indicate this variant is unlikely to be disease-causing, additional studies are necessary to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Oct 12, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Dec 02, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: This variant has been in 1 individual with hypocholesterolemia - classified as DM in HGMD. An in vitro cleavage assay showed that the variant had a loss of function effect. Gain of function mutations in this gene lead to hypercholesterolemia, while loss of function lead to hypocholesterolemia. This variant is not classified in ClinVar. The variant was seen in 0.02% of South Asian chrs in gnomAD (6 chrs). -

Hypercholesterolemia, familial, 1

Uncertain:1

Mar 01, 2016

Cardiovascular Research Group, Instituto Nacional de Saude Doutor Ricardo Jorge

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: curation;literature only

- -

not provided

Uncertain:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Familial hypercholesterolemia

Uncertain:1

Dec 07, 2023

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces glycine with serine at codon 236 of the PCSK9 protein. Computational prediction tools indicate that this variant has a deleterious impact on protein structure and function. A functional study has shown this variant to cause a loss of PCSK9 function due to the failure of the mutant protein to exit the endoplasmic reticulum (PMID: 18266662). As a result, the cells expressing the mutant protein showed increased LDL uptake (PMID: 18266662). Consistent with this functional study, this variant has been reported in two individuals with low circulating levels of LDL-C (PMID: 18266662, 34341098). To our knowledge, this variant has not been reported in individuals affected with PCSK9-related disorders in the literature. This variant has been identified in 16/280576 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Although available evidence indicate this variant is unlikely to be disease-causing, additional studies are necessary to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Pathogenic

0.37

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.53

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.076

MetaRNN

Pathogenic

0.86

MetaSVM

Uncertain

0.43

MutationAssessor

Benign

1.2

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-5.5

REVEL

Pathogenic

0.84

Sift

Pathogenic

0.0

Sift4G

Benign

0.091

Polyphen

1.0

Vest4

0.96

MVP

0.91

MPC

0.83

ClinPred

0.51

GERP RS

3.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.94

gMVP

0.86

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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