2-32224523-C-A

Position:

chr2-32224523-C-A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_001199138.2(NLRC4):c.3025G>T(p.Asp1009Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000694 in 1,613,278 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. D1009G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000072 ( 0 hom. )

Consequence

NLRC4
NM_001199138.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.973

Variant links:

Genes affected

NLRC4 (HGNC:16412): (NLR family CARD domain containing 4) This gene encodes a member of the caspase recruitment domain-containing NLR family. Family members play essential roles in innate immune response to a wide range of pathogenic organisms, tissue damage and other cellular stresses. Mutations in this gene result in autoinflammation with infantile enterocolitis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2014]

NLRC4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000046 (7/152108) while in subpopulation NFE AF= 0.000103 (7/68038). AF 95% confidence interval is 0.0000476. There are 0 homozygotes in gnomad4. There are 5 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
NLRC4	NM_001199138.2 linkuse as main transcript	c.3025G>T	p.Asp1009Tyr	missense_variant	9/9	ENST00000402280.6
NLRC4	NM_001199139.1 linkuse as main transcript	c.3025G>T	p.Asp1009Tyr	missense_variant	9/9
NLRC4	NM_021209.4 linkuse as main transcript	c.3025G>T	p.Asp1009Tyr	missense_variant	9/9
NLRC4	NM_001302504.1 linkuse as main transcript	c.1030G>T	p.Asp344Tyr	missense_variant	8/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NLRC4	ENST00000402280.6 linkuse as main transcript	c.3025G>T	p.Asp1009Tyr	missense_variant	9/9	1	NM_001199138.2	P1	Q9NPP4-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000719

AC:

105

AN:

1461170

Hom.:

Cov.:

AF XY:

0.0000798

AC XY:

AN XY:

726890

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000864

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74300

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000135

Hom.:

Bravo

AF:

0.0000567

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 30, 2023

The c.3025G>T (p.D1009Y) alteration is located in exon 9 (coding exon 8) of the NLRC4 gene. This alteration results from a G to T substitution at nucleotide position 3025, causing the aspartic acid (D) at amino acid position 1009 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Periodic fever-infantile enterocolitis-autoinflammatory syndrome;C4015276:Familial cold autoinflammatory syndrome 4

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 15, 2023

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) performed at Invitae indicates that this missense variant is not expected to disrupt NLRC4 protein function. ClinVar contains an entry for this variant (Variation ID: 1481766). This variant has not been reported in the literature in individuals affected with NLRC4-related conditions. This variant is present in population databases (rs374967155, gnomAD 0.002%). This sequence change replaces aspartic acid, which is acidic and polar, with tyrosine, which is neutral and polar, at codon 1009 of the NLRC4 protein (p.Asp1009Tyr). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.062

BayesDel_noAF

Benign

-0.33

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.70

D;D;.;D

Eigen

Uncertain

0.22

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.77

LIST_S2

Benign

0.76

.;.;T;T

M_CAP

Benign

0.025

MetaRNN

Uncertain

0.48

T;T;T;T

MetaSVM

Benign

-0.65

MutationAssessor

Benign

0.97

L;L;.;L

PrimateAI

Benign

0.42

PROVEAN

Uncertain

-2.9

D;D;D;D

REVEL

Benign

0.25

Sift

Uncertain

0.0070

D;D;D;D

Polyphen

0.99

D;D;D;D

Vest4

0.43

MVP

0.73

MPC

0.85

ClinPred

0.93

GERP RS

3.7

Varity_R

0.18

gMVP

0.43

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