NM_144687.4:c.2072+2_2072+3insTT

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 8P and 5B. PVS1BS1_SupportingBS2

The NM_144687.4(NLRP12):c.2072+2_2072+3insTT variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000218 in 1,604,598 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

NLRP12
NM_144687.4 splice_donor, intron

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 1.31

Publications

6 publications found

Variant links:

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

NLRP12 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, Cryptic splice site detected, with MaxEntScore 4.2, offset of 38, new splice context is: tagGTtcgt. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000335 (5/149332) while in subpopulation EAS AF = 0.000795 (4/5030). AF 95% confidence interval is 0.000271. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NLRP12	NM_144687.4 link	c.2072+2_2072+3insTT		splice_donor_variant, intron_variant	Intron 3 of 9	ENST00000324134.11	NP_653288.1	P59046-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
NLRP12	ENST00000324134.11 link	c.2072+2_2072+3insTT	splice_donor_variant, intron_variant	Intron 3 of 9	1	NM_144687.4	ENSP00000319377.6	P59046-1
NLRP12	ENST00000345770.9 link	c.2072+2_2072+3insTT	splice_donor_variant, intron_variant	Intron 3 of 8	1		ENSP00000341428.5	A0A0C4DH17
NLRP12	ENST00000391772.1 link	c.2072+2_2072+3insTT	splice_donor_variant, intron_variant	Intron 3 of 6	1		ENSP00000375652.1	A0A0C4DFY3

Frequencies

GnomAD3 genomes

AF:

0.0000402

AC:

AN:

149280

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000671

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000991

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000847

AC:

AN:

247892

AF XY:

0.0000520

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00104

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000897

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000206

AC:

AN:

1455266

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

723896

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33306

American (AMR)

AF:

0.0000224

AC:

AN:

44602

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26018

East Asian (EAS)

AF:

0.000355

AC:

AN:

39468

South Asian (SAS)

AF:

0.00

AC:

AN:

86092

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52268

Middle Eastern (MID)

AF:

0.000203

AC:

AN:

4926

European-Non Finnish (NFE)

AF:

0.00000992

AC:

AN:

1108552

Other (OTH)

AF:

0.0000333

AC:

AN:

60034

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000335

AC:

AN:

149332

Hom.:

Cov.:

AF XY:

0.0000413

AC XY:

AN XY:

72556

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

40826

American (AMR)

AF:

0.0000670

AC:

AN:

14928

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3446

East Asian (EAS)

AF:

0.000795

AC:

AN:

5030

South Asian (SAS)

AF:

0.00

AC:

AN:

4706

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

284

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67538

Other (OTH)

AF:

0.00

AC:

AN:

2064

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.0000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial cold autoinflammatory syndrome 2

Uncertain:2

Apr 18, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 03, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change falls in intron 3 of the NLRP12 gene. It does not directly change the encoded amino acid sequence of the NLRP12 protein. It affects a nucleotide within the consensus splice site. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with NLRP12-related conditions. ClinVar contains an entry for this variant (Variation ID: 811868). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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. -

not specified

Uncertain:1

May 04, 2022

Mendelics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autoinflammatory syndrome

Uncertain:1

May 12, 2021

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

1.3

Mutation Taster

=6/94

disease causing (ClinVar)

(source)

Splicing

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