NM_001243133.2:c.1020C>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001243133.2(NLRP3):c.1020C>T(p.Pro340Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00628 in 1,614,172 control chromosomes in the GnomAD database, including 48 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0053 ( 3 hom., cov: 32)

Exomes 𝑓: 0.0064 ( 45 hom. )

Consequence

NLRP3
NM_001243133.2 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:17

Conservation

PhyloP100: -3.95

Publications

4 publications found

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 Gene-Disease associations (from GenCC):

CINCA syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
cryopyrin-associated periodic syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: Illumina
familial cold autoinflammatory syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
familial cold autoinflammatory syndrome 1
Inheritance: AD Classification: STRONG Submitted by: G2P
Muckle-Wells syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
keratitis fugax hereditaria
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

NLRP3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant 1-247424469-C-T is Benign according to our data. Variant chr1-247424469-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 218548.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-3.95 with no splicing effect.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00527 (803/152314) while in subpopulation AMR AF = 0.00876 (134/15292). AF 95% confidence interval is 0.00756. There are 3 homozygotes in GnomAd4. There are 370 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 803 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NLRP3	NM_001243133.2 link	c.1020C>T	p.Pro340Pro	synonymous_variant	Exon 4 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.1020C>T	p.Pro340Pro	synonymous_variant	Exon 4 of 10	1	NM_001243133.2	ENSP00000337383.4		A0A7I2R3P8

Frequencies

GnomAD3 genomes

AF:

0.00528

AC:

803

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00145

Gnomad AMI

AF:

0.00548

Gnomad AMR

AF:

0.00877

Gnomad ASJ

AF:

0.00346

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.00565

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.00753

Gnomad OTH

AF:

0.00430

GnomAD2 exomes

AF:

0.00521

AC:

1305

AN:

250556

AF XY:

0.00515

show subpopulations

Gnomad AFR exome

AF:

0.00136

Gnomad AMR exome

AF:

0.00610

Gnomad ASJ exome

AF:

0.00289

Gnomad EAS exome

AF:

0.00142

Gnomad FIN exome

AF:

0.00531

Gnomad NFE exome

AF:

0.00701

Gnomad OTH exome

AF:

0.0106

GnomAD4 exome

AF:

0.00639

AC:

9341

AN:

1461858

Hom.:

Cov.:

AF XY:

0.00630

AC XY:

4582

AN XY:

727226

show subpopulations

African (AFR)

AF:

0.00114

AC:

AN:

33480

American (AMR)

AF:

0.00639

AC:

286

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00356

AC:

AN:

26136

East Asian (EAS)

AF:

0.00179

AC:

AN:

39698

South Asian (SAS)

AF:

0.00138

AC:

119

AN:

86258

European-Finnish (FIN)

AF:

0.00641

AC:

342

AN:

53390

Middle Eastern (MID)

AF:

0.00382

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00718

AC:

7989

AN:

1112010

Other (OTH)

AF:

0.00631

AC:

381

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

611

1223

1834

2446

3057

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

296

592

888

1184

1480

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00527

AC:

803

AN:

152314

Hom.:

Cov.:

AF XY:

0.00497

AC XY:

370

AN XY:

74488

show subpopulations

African (AFR)

AF:

0.00144

AC:

AN:

41586

American (AMR)

AF:

0.00876

AC:

134

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00346

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5182

South Asian (SAS)

AF:

0.00146

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00565

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00753

AC:

512

AN:

68026

Other (OTH)

AF:

0.00425

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

114

152

190

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00548

Hom.:

Bravo

AF:

0.00523

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00769

EpiControl

AF:

0.00824

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:17

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:7

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Jan 19, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 30245029) -

May 10, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

NLRP3: BP4, BP7, BS2 -

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

- -

Jan 25, 2019

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Aug 05, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:4

Dec 21, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Pro342Pro in exon 5 of NLRP3: This variant is not expected to have clinical si gnificance because it does not alter an amino acid residue and is not located wi thin the splice consensus sequence. It has been identified in 0.7% (913/125988) of European chromosomes including homozygotes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org/; dbSNP rs41311573). ACMG/AMP criteri a applied: BS1, BP7 . -

May 23, 2016

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 11, 2015

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Familial cold autoinflammatory syndrome 1

Benign:1

Mar 06, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

NLRP3-related disorder

Benign:1

Feb 11, 2021

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as 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:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autoinflammatory syndrome

Benign:1

Mar 11, 2022

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Familial amyloid nephropathy with urticaria AND deafness

Benign:1

Mar 06, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Chronic infantile neurological, cutaneous and articular syndrome

Benign:1

Mar 06, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

1.2

(source)

DANN

Benign

0.49

PhyloP100

-3.9

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over