rs147946775

Variant names:

Variant summary

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

The NM_001243133.2(NLRP3):c.2176A>G(p.Ser726Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0009 in 1,614,100 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 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. S726T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00047 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00095 ( 2 hom. )

Consequence

NLRP3
NM_001243133.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:12

Conservation

PhyloP100: 0.238

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 in the NLRP3 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 55 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Gene score misZ: 2.1417 (below the threshold of 3.09). Trascript score misZ: 3.5037 (above the threshold of 3.09). GenCC associations: The gene is linked to familial cold autoinflammatory syndrome, keratitis fugax hereditaria, cryopyrin-associated periodic syndrome, Muckle-Wells syndrome, familial cold autoinflammatory syndrome 1, CINCA syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.022883028).

BP6

Variant 1-247429610-A-G is Benign according to our data. Variant chr1-247429610-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 234290.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=8, Benign=1, Uncertain_significance=2}. Variant chr1-247429610-A-G is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000466 (71/152222) while in subpopulation NFE AF= 0.000824 (56/67994). AF 95% confidence interval is 0.000651. There are 0 homozygotes in gnomad4. There are 26 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High AC in GnomAd4 at 71 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NLRP3	NM_001243133.2 link	c.2176A>G	p.Ser726Gly	missense_variant	Exon 5 of 10	ENST00000336119.8	NP_001230062.1	Q96P20A0A7I2R3P8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NLRP3	ENST00000336119.8 link	c.2176A>G	p.Ser726Gly	missense_variant	Exon 5 of 10	1	NM_001243133.2	ENSP00000337383.4		A0A7I2R3P8

Frequencies

GnomAD3 genomes

AF:

0.000467

AC:

AN:

152104

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000824

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000521

AC:

131

AN:

251454

Hom.:

AF XY:

0.000567

AC XY:

AN XY:

135894

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000555

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000870

Gnomad OTH exome

AF:

0.000978

GnomAD4 exome

AF:

0.000945

AC:

1382

AN:

1461878

Hom.:

Cov.:

AF XY:

0.000908

AC XY:

660

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000268

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000603

Gnomad4 FIN exome

AF:

0.000225

Gnomad4 NFE exome

AF:

0.00114

Gnomad4 OTH exome

AF:

0.000629

GnomAD4 genome

AF:

0.000466

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.000349

AC XY:

AN XY:

74446

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000824

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000896

Hom.:

Bravo

AF:

0.000525

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.000486

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000872

EpiControl

AF:

0.000830

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:12

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:5

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Apr 21, 2021

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 25821352) -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Feb 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

NLRP3: BP4, BS1, BS2 -

Apr 18, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1Benign:1

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 12, 2018

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Ser728Gly variant is classified as likely benign because it has been ident ified in 0.08% (105/126674) of European chromosomes by the Genome Aggregation Da tabase (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs147946775). It has bee n reported in one individual with PFAPA, but was also identified in 2 unaffected family members (Perko 2015). ACMG/AMP Criteria applied: BS1. -

Familial cold autoinflammatory syndrome 1

Uncertain:1Benign:1

May 20, 2016

Undiagnosed Diseases Network, NIH

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

NLRP3-related disorder

Benign:1

Sep 23, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cryopyrin associated periodic syndrome

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Familial amyloid nephropathy with urticaria AND deafness

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Autoinflammatory syndrome

Benign:1

Jan 01, 2020

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Chronic infantile neurological, cutaneous and articular syndrome

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.22

.;T;T;.;.

Eigen

Benign

-0.66

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.047

LIST_S2

Benign

0.038

T;.;T;.;T

M_CAP

Benign

0.041

MetaRNN

Benign

0.023

T;T;T;T;T

MetaSVM

Benign

-0.97

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.8

N;N;N;N;.

REVEL

Benign

0.038

Sift

Benign

0.14

T;T;T;T;.

Sift4G

Benign

0.22

T;D;D;T;.

Polyphen

0.0090

B;D;D;B;.

Vest4

0.28

MVP

0.95

MPC

0.42

ClinPred

0.024

GERP RS

2.0

Varity_R

0.087

gMVP

0.38

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