19-50359508-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_004851.3(NAPSA):c.931G>A(p.Gly311Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,614,162 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

NAPSA
NM_004851.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.27

Variant links:

Genes affected

NAPSA (HGNC:13395): (napsin A aspartic peptidase) This gene encodes a member of the peptidase A1 family of aspartic proteases. The encoded preproprotein is proteolytically processed to generate an activation peptide and the mature protease. The activation peptides of aspartic proteinases function as inhibitors of the protease active site. These peptide segments, or pro-parts, are deemed important for correct folding, targeting, and control of the activation of aspartic proteinase zymogens. The encoded protease may play a role in the proteolytic processing of pulmonary surfactant protein B in the lung and may function in protein catabolism in the renal proximal tubules. This gene has been described as a marker for lung adenocarcinoma and renal cell carcinoma. [provided by RefSeq, Feb 2016]

NAPSA links:

NR1H2 (HGNC:7965): (nuclear receptor subfamily 1 group H member 2) The liver X receptors, LXRA (NR1H3; MIM 602423) and LXRB, form a subfamily of the nuclear receptor superfamily and are key regulators of macrophage function, controlling transcriptional programs involved in lipid homeostasis and inflammation. The inducible LXRA is highly expressed in liver, adrenal gland, intestine, adipose tissue, macrophages, lung, and kidney, whereas LXRB is ubiquitously expressed. Ligand-activated LXRs form obligate heterodimers with retinoid X receptors (RXRs; see MIM 180245) and regulate expression of target genes containing LXR response elements (summary by Korf et al., 2009 [PubMed 19436111]).[supplied by OMIM, Jan 2010]

NR1H2 links:

LOC105372437 (HGNC:):

LOC105372437 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.902

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NAPSA	NM_004851.3 link	c.931G>A	p.Gly311Arg	missense_variant	Exon 7 of 9	ENST00000253719.7	NP_004842.1	O96009
NAPSA	XM_017027512.2 link	c.904G>A	p.Gly302Arg	missense_variant	Exon 7 of 9		XP_016883001.1
LOC105372437	XR_007067299.1 link	n.367+6902C>T		intron_variant	Intron 3 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NAPSA	ENST00000253719.7 link	c.931G>A	p.Gly311Arg	missense_variant	Exon 7 of 9	1	NM_004851.3	ENSP00000253719.1		O96009

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000135

AC:

AN:

251050

Hom.:

AF XY:

0.000162

AC XY:

AN XY:

135730

show subpopulations

Gnomad AFR exome

AF:

0.000370

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000159

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000107

AC:

157

AN:

1461796

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

727188

show subpopulations

Gnomad4 AFR exome

AF:

0.000269

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000255

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000944

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000164

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74522

show subpopulations

Gnomad4 AFR

AF:

0.000264

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000154

Hom.:

Bravo

AF:

0.000170

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000296

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 05, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.931G>A (p.G311R) alteration is located in exon 7 (coding exon 7) of the NAPSA gene. This alteration results from a G to A substitution at nucleotide position 931, causing the glycine (G) at amino acid position 311 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.21

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

Eigen

Uncertain

0.45

Eigen_PC

Uncertain

0.22

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.059

MetaRNN

Pathogenic

0.90

MetaSVM

Uncertain

-0.16

MutationAssessor

Pathogenic

3.1

PrimateAI

Benign

0.44

PROVEAN

Pathogenic

-7.8

REVEL

Uncertain

0.41

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.87

MutPred

0.76

Gain of solvent accessibility (P = 0.0456);

MVP

0.33

MPC

0.74

ClinPred

0.95

GERP RS

3.8

Varity_R

0.90

gMVP

0.79

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