1-247424028-G-T

Variant names:

• chr1-247424028-G-T
• rs149659331
• NM_001243133.2:c.579G>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001243133.2(NLRP3):​c.579G>T​(p.Thr193Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T193T) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: NLRP3 NM_001243133.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.472
• Publications: 1 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP7: Synonymous conserved (PhyloP=-0.472 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001243133.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NLRP3	NM_001243133.2	MANE Select	c.579G>T	p.Thr193Thr	synonymous	Exon 4 of 10	NP_001230062.1
	NLRP3	NM_004895.5		c.585G>T	p.Thr195Thr	synonymous	Exon 4 of 10	NP_004886.3
	NLRP3	NM_001079821.3		c.579G>T	p.Thr193Thr	synonymous	Exon 5 of 11	NP_001073289.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NLRP3	ENST00000336119.8	TSL:1 MANE Select	c.579G>T	p.Thr193Thr	synonymous	Exon 4 of 10	ENSP00000337383.4
	NLRP3	ENST00000391828.8	TSL:1	c.579G>T	p.Thr193Thr	synonymous	Exon 5 of 11	ENSP00000375704.4
	NLRP3	ENST00000366496.7	TSL:1	c.579G>T	p.Thr193Thr	synonymous	Exon 3 of 8	ENSP00000355452.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.12
DANN	Benign	0.44
PhyloP100		-0.47
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs149659331; hg19: chr1-247587330;