Variant chrX-129750489-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_003399.6(XPNPEP2):c.659T>C(p.Val220Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000277 in 1,082,535 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 11 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 24)

Exomes 𝑓: 0.000028 ( 0 hom. 11 hem. )

Consequence

XPNPEP2
NM_003399.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.63

Variant links:

Genes affected

XPNPEP2 (HGNC:12823): (X-prolyl aminopeptidase 2) Aminopeptidase P is a hydrolase specific for N-terminal imido bonds, which are common to several collagen degradation products, neuropeptides, vasoactive peptides, and cytokines. Structurally, the enzyme is a member of the 'pita bread fold' family and occurs in mammalian tissues in both soluble and GPI-anchored membrane-bound forms. A membrane-bound and soluble form of this enzyme have been identified as products of two separate genes. [provided by RefSeq, Jul 2008]

XPNPEP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.82

BS2

High Hemizygotes in GnomAdExome4 at 11 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
XPNPEP2	NM_003399.6 linkuse as main transcript	c.659T>C	p.Val220Ala	missense_variant	8/21	ENST00000371106.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
XPNPEP2	ENST00000371106.4 linkuse as main transcript	c.659T>C	p.Val220Ala	missense_variant	8/21	1	NM_003399.6	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000653

AC:

AN:

153097

Hom.:

AF XY:

0.00

AC XY:

AN XY:

46447

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000151

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000277

AC:

AN:

1082535

Hom.:

Cov.:

AF XY:

0.0000312

AC XY:

AN XY:

352741

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:

0.0000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000227

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000346

AC:

ExAC

AF:

0.00000833

AC:

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

Dec 09, 2023

The c.659T>C (p.V220A) alteration is located in exon 8 (coding exon 8) of the XPNPEP2 gene. This alteration results from a T to C substitution at nucleotide position 659, causing the valine (V) at amino acid position 220 to be replaced by an alanine (A). 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

Uncertain

0.45

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

-0.080

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.79

M_CAP

Uncertain

0.18

MetaRNN

Pathogenic

0.82

MetaSVM

Uncertain

0.22

MutationAssessor

Pathogenic

3.2

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.51

PROVEAN

Uncertain

-3.6

REVEL

Pathogenic

0.65

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.018

Polyphen

1.0

Vest4

0.71

MutPred

0.54

Loss of stability (P = 0.0591);

MVP

0.40

MPC

0.29

ClinPred

0.91

GERP RS

5.1

Varity_R

0.85

gMVP

0.83

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