Genetic Variant NPEPPS:p.Arg590Trp (chr17-47603942-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

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

The NM_006310.4(NPEPPS):c.1768C>T(p.Arg590Trp) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,459,838 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

NPEPPS
NM_006310.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.79

Variant links:

Genes affected

NPEPPS (HGNC:7900): (aminopeptidase puromycin sensitive) This gene encodes the puromycin-sensitive aminopeptidase, a zinc metallopeptidase which hydrolyzes amino acids from the N-terminus of its substrate. The protein has been localized to both the cytoplasm and to cellular membranes. This enzyme degrades enkaphalins in the brain, and studies in mouse suggest that it is involved in proteolytic events regulating the cell cycle. [provided by RefSeq, Jul 2008]

NPEPPS links:

KPNB1-DT (HGNC:55336): (KPNB1 divergent transcript)

KPNB1-DT links:

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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, 0.9

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPEPPS	NM_006310.4 link	c.1768C>T	p.Arg590Trp	missense_variant	Exon 16 of 23	ENST00000322157.9	NP_006301.3	P55786-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NPEPPS	ENST00000322157.9 link	c.1768C>T	p.Arg590Trp	missense_variant	Exon 16 of 23	1	NM_006310.4	ENSP00000320324.4		P55786-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1459838

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726102

show subpopulations

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:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 14, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1768C>T (p.R590W) alteration is located in exon 16 (coding exon 16) of the NPEPPS gene. This alteration results from a C to T substitution at nucleotide position 1768, causing the arginine (R) at amino acid position 590 to be replaced by a tryptophan (W). 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

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Uncertain

0.11

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.42

.;T

Eigen

Uncertain

0.67

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.90

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Pathogenic

3.2

.;M

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-7.2

D;D

REVEL

Uncertain

0.60

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.93

MutPred

0.70

.;Loss of disorder (P = 0.085);

MVP

0.73

MPC

1.6

ClinPred

1.0

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.98

gMVP

0.96

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over