rs766256429

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2PM5PP2PP3_Moderate

The NM_003995.4(NPR2):​c.2455C>G​(p.Arg819Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,816 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. R819C) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

NPR2
NM_003995.4 missense

Scores

16
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.40

Publications

3 publications found
Variant links:
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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr9-35806474-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 208356.
PP2
Missense variant in the NPR2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 31 curated pathogenic missense variants (we use a threshold of 10). The gene has 9 curated benign missense variants. Gene score misZ: 2.9586 (below the threshold of 3.09). Trascript score misZ: 4.5861 (above the threshold of 3.09). GenCC associations: The gene is linked to tall stature-scoliosis-macrodactyly of the great toes syndrome, acromesomelic dysplasia 1, Maroteaux type, short stature with nonspecific skeletal abnormalities 1.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.915

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NPR2NM_003995.4 linkc.2455C>G p.Arg819Gly missense_variant Exon 16 of 22 ENST00000342694.7 NP_003986.2
NPR2NM_001378923.1 linkc.2464C>G p.Arg822Gly missense_variant Exon 16 of 22 NP_001365852.1
NPR2XM_047423431.1 linkc.1060C>G p.Arg354Gly missense_variant Exon 11 of 17 XP_047279387.1
NPR2XM_024447561.2 linkc.1051C>G p.Arg351Gly missense_variant Exon 11 of 17 XP_024303329.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NPR2ENST00000342694.7 linkc.2455C>G p.Arg819Gly missense_variant Exon 16 of 22 1 NM_003995.4 ENSP00000341083.2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
251446
AF XY:
0.00000736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461816
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
727210
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86256
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53418
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111942
Other (OTH)
AF:
0.00
AC:
0
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
32
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.99
BayesDel_addAF
Pathogenic
0.37
D
BayesDel_noAF
Pathogenic
0.39
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.91
D;D
Eigen
Pathogenic
0.92
Eigen_PC
Pathogenic
0.82
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Pathogenic
0.99
D;D
M_CAP
Pathogenic
0.84
D
MetaRNN
Pathogenic
0.91
D;D
MetaSVM
Pathogenic
0.95
D
MutationAssessor
Pathogenic
3.9
H;.
PhyloP100
1.4
PrimateAI
Pathogenic
0.88
D
PROVEAN
Pathogenic
-6.6
D;D
REVEL
Pathogenic
0.73
Sift
Pathogenic
0.0
D;D
Sift4G
Pathogenic
0.0010
D;D
Vest4
0.80
ClinPred
1.0
D
GERP RS
4.2
Varity_R
0.80
gMVP
0.87
Mutation Taster
=33/67
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs766256429; hg19: chr9-35806471; COSMIC: COSV100438939; COSMIC: COSV100438939; API