rs987480651

Variant names:

• chrX-129746664-C-T
• rs987480651
• NM_003399.6:c.473C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_003399.6(XPNPEP2):​c.473C>T​(p.Pro158Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: XPNPEP2 NM_003399.6 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 6.12
• Publications: 0 publications found

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]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.963

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003399.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XPNPEP2	NM_003399.6	MANE Select	c.473C>T	p.Pro158Leu	missense	Exon 6 of 21	NP_003390.4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XPNPEP2	ENST00000371106.4	TSL:1 MANE Select	c.473C>T	p.Pro158Leu	missense	Exon 6 of 21	ENSP00000360147.3	O43895
	XPNPEP2	ENST00000880532.1		c.521C>T	p.Pro174Leu	missense	Exon 6 of 21	ENSP00000550591.1
	XPNPEP2	ENST00000880530.1		c.473C>T	p.Pro158Leu	missense	Exon 6 of 21	ENSP00000550589.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Pathogenic	0.51	D
BayesDel_noAF	Pathogenic	0.49
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.18	T
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.85	D
MetaRNN	Pathogenic	0.96	D
MetaSVM	Uncertain	0.65	D
MutationAssessor	Pathogenic	4.0	H
PhyloP100		6.1
PrimateAI	Uncertain	0.51	T
PROVEAN	Pathogenic	-9.3	D
REVEL	Pathogenic	0.84
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0060	D
Polyphen		1.0	D
Vest4		0.88
MutPred		0.75		Loss of sheet (P = 0.1158)
MVP		0.61
MPC		0.36
ClinPred		1.0	D
GERP RS		5.6
Varity_R		0.85
gMVP		0.95
Mutation Taster		=18/82	disease causing

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

Other links and lift over

dbSNP: rs987480651; hg19: chrX-128880640;