rs28931582

Positions:

• chr9-35792751-T-G

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP2 PP3_Strong PP5

The NM_003995.4(NPR2):​c.343T>G​(p.Trp115Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPR2 NM_003995.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.78

Genes affected

NPR2 (HGNC:7944): (natriuretic peptide receptor 2) This gene encodes natriuretic peptide receptor B, one of two integral membrane receptors for natriuretic peptides. Both NPR1 and NPR2 contain five functional domains: an extracellular ligand-binding domain, a single membrane-spanning region, and intracellularly a protein kinase homology domain, a helical hinge region involved in oligomerization, and a carboxyl-terminal guanylyl cyclase catalytic domain. The protein is the primary receptor for C-type natriuretic peptide (CNP), which upon ligand binding exhibits greatly increased guanylyl cyclase activity. Mutations in this gene are the cause of acromesomelic dysplasia Maroteaux type. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), NPR2. . Gene score misZ 2.9586 (greater than the threshold 3.09). Trascript score misZ 4.5861 (greater than threshold 3.09). GenCC has associacion of gene with short stature with nonspecific skeletal abnormalities, acromesomelic dysplasia 1, Maroteaux type, tall stature-scoliosis-macrodactyly of the great toes syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.993
• PP5: Variant 9-35792751-T-G is Pathogenic according to our data. Variant chr9-35792751-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 17785.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr9-35792751-T-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPR2	NM_003995.4	c.343T>G	p.Trp115Gly	missense_variant	1/22	ENST00000342694.7	NP_003986.2
NPR2	NM_001378923.1	c.343T>G	p.Trp115Gly	missense_variant	1/22		NP_001365852.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPR2	ENST00000342694.7	c.343T>G	p.Trp115Gly	missense_variant	1/22	1	NM_003995.4	ENSP00000341083	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Acromesomelic dysplasia 1, Maroteaux type Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jul 01, 2004

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	29
DANN	Benign	0.97
DEOGEN2	Pathogenic	0.90	D
Eigen	Uncertain	0.55
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.94	D
M_CAP	Pathogenic	0.55	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Uncertain	0.49	D
MutationAssessor	Uncertain	2.6	M
MutationTaster	Benign	1.0	A
PrimateAI	Uncertain	0.72	T
PROVEAN	Pathogenic	-11	D
REVEL	Pathogenic	0.74
Sift	Uncertain	0.020	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.86
MutPred		0.96		Gain of catalytic residue at W115 (P = 0.0148);
MVP		0.99
MPC		2.0
ClinPred		0.99	D
GERP RS		2.8
Varity_R		0.46
gMVP		0.98

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: rs28931582; hg19: chr9-35792748;