Variant 15-24675998-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018958.3(NPAP1):c.131C>G(p.Pro44Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000481 in 1,601,040 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

NPAP1
NM_018958.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.13

Variant links:

Genes affected

NPAP1 (HGNC:1190): (nuclear pore associated protein 1) This intronless retrogene is located in the Prader-Willi syndrome region on chromosome 15. This gene exhibits tissue-specific imprinting. Expression in adult testis and brain is biallelic, while expression in fetal brain is monoallelic and only from the paternal chromosome. The encoded protein is associated with the nuclear pore complex. [provided by RefSeq, Mar 2021]

NPAP1 links:

ENSG00000286110 (HGNC:):

ENSG00000286110 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01883468).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPAP1	NM_018958.3 linkuse as main transcript	c.131C>G	p.Pro44Arg	missense_variant	1/1	ENST00000329468.5	NP_061831.2	Q9NZP6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPAP1	ENST00000329468.5 linkuse as main transcript	c.131C>G	p.Pro44Arg	missense_variant	1/1	6	NM_018958.3	ENSP00000333735.3		Q9NZP6

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00136

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000975

AC:

AN:

225698

Hom.:

AF XY:

0.0000801

AC XY:

AN XY:

124890

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00125

Gnomad SAS exome

AF:

0.0000682

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000483

AC:

AN:

1448774

Hom.:

Cov.:

AF XY:

0.0000499

AC XY:

AN XY:

720732

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00127

Gnomad4 SAS exome

AF:

0.000200

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.03e-7

Gnomad4 OTH exome

AF:

0.0000502

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152266

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00117

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000831

ExAC

AF:

0.0000750

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 02, 2023

The c.131C>G (p.P44R) alteration is located in exon 1 (coding exon 1) of the NPAP1 gene. This alteration results from a C to G substitution at nucleotide position 131, causing the proline (P) at amino acid position 44 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

0.17

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0095

Eigen

Benign

-0.92

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.0062

LIST_S2

Benign

0.33

M_CAP

Benign

0.00080

MetaRNN

Benign

0.019

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.75

PrimateAI

Benign

0.48

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.10

Sift

Uncertain

0.0040

Sift4G

Pathogenic

0.0

Polyphen

0.94

Vest4

0.31

MutPred

0.26

Gain of MoRF binding (P = 0.0056);

MVP

0.040

MPC

0.39

ClinPred

0.43

GERP RS

-4.6

Varity_R

0.12

gMVP

0.30

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