rs104895502

Positions:

• chr19-54938095-C-A
• chr19-54938095-C-G
• chr19-54938095-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PM5

The NM_001127255.2(NLRP7):​c.2078G>T​(p.Arg693Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R693P) has been classified as Pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: NLRP7 NM_001127255.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.00300

Genes affected

NLRP7 (HGNC:22947): (NLR family pyrin domain containing 7) This gene encodes a member of the NACHT, leucine rich repeat, and PYD containing (NLRP) protein family. It has an N-terminal pyrin domain, followed by a NACHT domain, a NACHT-associated domain (NAD), and a C-terminal leucine-rich repeat (LRR) region. NLRP proteins are implicated in the activation of proinflammatory caspases through multiprotein complexes called inflammasomes. This gene may act as a feedback regulator of caspase-1-dependent interleukin 1-beta secretion. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

NCR1 (HGNC:6731): (natural cytotoxicity triggering receptor 1) Predicted to be involved in cellular defense response; regulation of natural killer cell mediated cytotoxicity; and signal transduction. Predicted to act upstream of or within defense response to virus and detection of virus. Predicted to be located in cell surface. Predicted to be part of SWI/SNF complex. Predicted to be active in plasma membrane. Biomarker of acquired immunodeficiency syndrome; anogenital venereal wart; hepatitis C; and lymphoproliferative syndrome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-54938095-C-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NLRP7	NM_001127255.2	c.2078G>T	p.Arg693Leu	missense_variant	5/11		NP_001120727.1
NLRP7	NM_001405531.1	c.2078G>T	p.Arg693Leu	missense_variant	7/13		NP_001392460.1
NLRP7	NM_139176.4	c.1994G>T	p.Arg665Leu	missense_variant	5/11		NP_631915.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NLRP7	ENST00000592784.6	c.2078G>T	p.Arg693Leu	missense_variant	5/11	1		ENSP00000468706.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461870 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 727240

Gnomad4 AFR exome AF: 0.00

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Benign	0.0090	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.18	T;.;T;.;.
Eigen	Benign	-0.67
Eigen_PC	Benign	-0.75
FATHMM_MKL	Benign	0.38	N
M_CAP	Benign	0.0051	T
MetaRNN	Uncertain	0.50	T;T;T;T;T
MetaSVM	Benign	-0.96	T
MutationAssessor	Uncertain	2.5	M;.;M;M;M
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-4.1	D;.;.;.;.
REVEL	Benign	0.21
Sift	Uncertain	0.013	D;.;.;.;.
Sift4G	Uncertain	0.0090	D;D;D;D;D
Polyphen		0.13	B;B;B;.;.
Vest4		0.58
MVP		0.46
MPC		0.37
ClinPred		0.70	D
GERP RS		1.1
Varity_R		0.30
gMVP		0.37

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

Other links and lift over

dbSNP: rs104895502; hg19: chr19-55449463;