rs117287351

Positions:

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 1P and 13B. PP2BP4_StrongBP6BS1BS2

The NM_001243133.2(NLRP3):c.208G>A(p.Val70Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000423 in 1,613,968 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V70L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00044 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00042 ( 4 hom. )

Consequence

NLRP3
NM_001243133.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:8

Conservation

PhyloP100: -0.357

Variant links:

Genes affected

NLRP3 (HGNC:16400): (NLR family pyrin domain containing 3) This gene encodes a pyrin-like protein containing a pyrin domain, a nucleotide-binding site (NBS) domain, and a leucine-rich repeat (LRR) motif. This protein interacts with the apoptosis-associated speck-like protein PYCARD/ASC, which contains a caspase recruitment domain, and is a member of the NLRP3 inflammasome complex. This complex functions as an upstream activator of NF-kappaB signaling, and it plays a role in the regulation of inflammation, the immune response, and apoptosis. The SARS-CoV 3a protein, a transmembrane pore-forming viroporin, has been shown to activate the NLRP3 inflammasome via the formation of ion channels in macrophages. Mutations in this gene are associated with familial cold autoinflammatory syndrome (FCAS), Muckle-Wells syndrome (MWS), chronic infantile neurological cutaneous and articular (CINCA) syndrome, neonatal-onset multisystem inflammatory disease (NOMID), keratoendotheliitis fugax hereditarian, and deafness, autosomal dominant 34, with or without inflammation. Multiple alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. Alternative 5' UTR structures are suggested by available data; however, insufficient evidence is available to determine if all of the represented 5' UTR splice patterns are biologically valid. [provided by RefSeq, Aug 2020]

NLRP3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

PP2

Missense variant where missense usually causes diseases, NLRP3

BP4

Computational evidence support a benign effect (MetaRNN=0.004709512).

BP6

Variant 1-247419008-G-A is Benign according to our data. Variant chr1-247419008-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 245593.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Likely_benign=7, Uncertain_significance=1}. Variant chr1-247419008-G-A is described in Lovd as [Likely_benign]. Variant chr1-247419008-G-A is described in Lovd as [Likely_pathogenic].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00044 (67/152306) while in subpopulation EAS AF= 0.01 (52/5178). AF 95% confidence interval is 0.00787. There are 0 homozygotes in gnomad4. There are 36 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 67 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NLRP3	NM_001243133.2 linkuse as main transcript	c.208G>A	p.Val70Met	missense_variant	2/10	ENST00000336119.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NLRP3	ENST00000336119.8 linkuse as main transcript	c.208G>A	p.Val70Met	missense_variant	2/10	1	NM_001243133.2	P1

Frequencies

GnomAD3 genomes

AF:

0.000440

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00173

Gnomad EAS

AF:

0.0100

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000759

AC:

190

AN:

250408

Hom.:

AF XY:

0.000717

AC XY:

AN XY:

135322

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000696

Gnomad EAS exome

AF:

0.00897

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000708

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000421

AC:

616

AN:

1461662

Hom.:

Cov.:

AF XY:

0.000396

AC XY:

288

AN XY:

727106

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00115

Gnomad4 EAS exome

AF:

0.0110

Gnomad4 SAS exome

AF:

0.000151

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000899

Gnomad4 OTH exome

AF:

0.000497

GnomAD4 genome

AF:

0.000440

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.000483

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00173

Gnomad4 EAS

AF:

0.0100

Gnomad4 SAS

AF:

0.000621

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000432

Hom.:

Bravo

AF:

0.000514

ExAC

AF:

0.000626

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:8

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 02, 2021	This variant is associated with the following publications: (PMID: 28028683, 23633568, 31172726, 28956000, 31664448, 33329557, 32115236) -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jan 01, 2024	NLRP3: BP4, BS1 -
Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Jun 08, 2017	The NLRP3 c.214G>A;p.Val72Met variant has been listed in the medical literature in at least two individuals with autoinflammatory disease (Nakayama 2017). The variant is listed in the ClinVar database (Variation ID: 245593) and in the dbSNP variant database (rs117287351) with an allele frequency of up to 0.9 percent (171/18868 alleles) in East Asians in the Genome Aggregation Database. The amino acid at this position is conserved across species and computational algorithms (PolyPhen2, SIFT) predict this variant is deleterious. Considering available information, the clinical significance cannot be determined with certainty. If this variant is later determined to be pathogenic, this individual is predicted to be affected with autosomal dominant CINCA syndrome, Familial cold-induced inflammatory syndrome, or Muckle-Wells syndrome (OMIM#606416). References: Nakayama M et al. Accurate clinical genetic testing for autoinflammatory diseases using the next-generation sequencing platform MiSeq. Biochem Biophys Rep 2017 9:146-152. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 23, 2017

p.Val72Met in exon 1 of NLRP3: This variant is not expected to have clinical significance because it has been identified in 0.81% (70/8600) of East Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs117287351). -

Familial cold autoinflammatory syndrome 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Cryopyrin associated periodic syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 25, 2024

- -

Autoinflammatory syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Mar 17, 2021

- -

Familial amyloid nephropathy with urticaria AND deafness

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

Chronic infantile neurological, cutaneous and articular syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Uncertain

1.0

Eigen

Benign

-0.61

Eigen_PC

Benign

-0.82

FATHMM_MKL

Benign

0.0047

LIST_S2

Benign

0.73

T;.;T;T;.;T;T;T

MetaRNN

Benign

0.0047

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.79

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

0.030

N;N;N;N;N;.;.;N

REVEL

Benign

0.14

Sift

Uncertain

0.0050

D;D;D;D;D;.;.;D

Sift4G

Uncertain

0.012

D;D;D;D;D;.;.;D

Polyphen

0.99

D;D;D;D;D;.;.;D

Vest4

0.12

MVP

0.87

MPC

0.61

ClinPred

0.070

GERP RS

-4.6

Varity_R

0.19

gMVP

0.60

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