9-35802549-GC-G

Variant names:

• chr9-35802549-GC-G
• rs1057519334
• NM_003995.4:c.1758delC

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_003995.4(NPR2):​c.1758delC​(p.Cys586fs) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPR2 NM_003995.4 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 2.02
• Publications: 0 publications found

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]

NPR2 Gene-Disease associations (from GenCC):

• acromesomelic dysplasia 1, Maroteaux type

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• short stature with nonspecific skeletal abnormalities 1

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• tall stature-scoliosis-macrodactyly of the great toes syndrome

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

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-35802549-GC-G is Pathogenic according to our data. Variant chr9-35802549-GC-G is described in ClinVar as Pathogenic. ClinVar VariationId is 375292.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003995.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPR2	NM_003995.4	MANE Select	c.1758delC	p.Cys586fs	frameshift	Exon 11 of 22	NP_003986.2
	NPR2	NM_001378923.1		c.1767delC	p.Cys589fs	frameshift	Exon 11 of 22	NP_001365852.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPR2	ENST00000342694.7	TSL:1 MANE Select	c.1758delC	p.Cys586fs	frameshift	Exon 11 of 22	ENSP00000341083.2
	NPR2	ENST00000687787.1		c.1758delC	p.Cys586fs	frameshift	Exon 11 of 21	ENSP00000509440.1
	NPR2	ENST00000693094.1		c.1758delC	p.Cys586fs	frameshift	Exon 11 of 22	ENSP00000510161.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Acromesomelic dysplasia 1, Maroteaux type Pathogenic:1

Mar 30, 2013

Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.0
Mutation Taster		=0/200	disease causing (ClinVar)

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: rs1057519334; hg19: chr9-35802546;