19-53824021-C-G

Variant names:

• chr19-53824021-C-G
• rs369053968
• NM_144687.4:c.154G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_144687.4(NLRP12):​c.154G>C​(p.Gly52Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G52D) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: NLRP12 NM_144687.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.968
• Publications: 4 publications found

Genes affected

NLRP12 (HGNC:22938): (NLR family pyrin domain containing 12) This gene encodes a member of the CATERPILLER family of cytoplasmic proteins. The encoded protein, which contains an N-terminal pyrin domain, a NACHT domain, a NACHT-associated domain, and a C-terminus leucine-rich repeat region, functions as an attenuating factor of inflammation by suppressing inflammatory responses in activated monocytes. Mutations in this gene cause familial cold autoinflammatory syndrome type 2. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2013]

NLRP12 Gene-Disease associations (from GenCC):

• familial cold autoinflammatory syndrome 2

  Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, Laboratory for Molecular Medicine

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.23382151).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NLRP12	NM_144687.4	c.154G>C	p.Gly52Arg	missense_variant	Exon 1 of 10	ENST00000324134.11	NP_653288.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NLRP12	ENST00000324134.11	c.154G>C	p.Gly52Arg	missense_variant	Exon 1 of 10	1	NM_144687.4	ENSP00000319377.6
NLRP12	ENST00000345770.9	c.154G>C	p.Gly52Arg	missense_variant	Exon 1 of 9	1		ENSP00000341428.5
NLRP12	ENST00000391772.1	c.154G>C	p.Gly52Arg	missense_variant	Exon 1 of 7	1		ENSP00000375652.1

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD2 exomes AF: 0.00000795 AC: 2 AN: 251442 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461888 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 727246

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000447 AC: 2 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112006

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 30

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Familial cold autoinflammatory syndrome 2 Uncertain:1

Aug 17, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on NLRP12 protein function. This variant has not been reported in the literature in individuals affected with NLRP12-related conditions. This variant is present in population databases (rs369053968, gnomAD 0.006%). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 52 of the NLRP12 protein (p.Gly52Arg).

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.34
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	17
DANN	Benign	0.92
DEOGEN2	Benign	0.046	T;.;.;.;.
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.37
FATHMM_MKL	Benign	0.035	N
LIST_S2	Benign	0.81	T;T;T;T;T
M_CAP	Benign	0.0030	T
MetaRNN	Benign	0.23	T;T;T;T;T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.4	L;L;L;.;.
PhyloP100		0.97
PrimateAI	Benign	0.38	T
PROVEAN	Benign	-0.81	N;N;N;N;N
REVEL	Benign	0.15
Sift	Benign	0.24	T;T;T;T;T
Sift4G	Benign	0.17	T;T;T;T;T
Vest4		0.33
ClinPred		0.31	T
GERP RS		3.7
PromoterAI		0.033	Neutral
Varity_R		0.35
gMVP		0.41
Mutation Taster		=37/63	disease causing

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: rs369053968; hg19: chr19-54327275;