chr19-33387372-G-T

Position:

chr19-33387372-G-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_000285.4(PEPD):c.1454C>A(p.Ala485Asp) variant causes a missense change. The variant allele was found at a frequency of 0.0000428 in 1,613,926 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A485A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00025 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

PEPD
NM_000285.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 4.95

Variant links:

Genes affected

PEPD (HGNC:8840): (peptidase D) This gene encodes a member of the peptidase family. The protein forms a homodimer that hydrolyzes dipeptides or tripeptides with C-terminal proline or hydroxyproline residues. The enzyme serves an important role in the recycling of proline, and may be rate limiting for the production of collagen. Mutations in this gene result in prolidase deficiency, which is characterized by the excretion of large amount of di- and tri-peptides containing proline. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Oct 2009]

PEPD links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.14329049).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00025 (38/152228) while in subpopulation AFR AF= 0.00082 (34/41452). AF 95% confidence interval is 0.000603. There are 0 homozygotes in gnomad4. There are 20 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PEPD	NM_000285.4 linkuse as main transcript	c.1454C>A	p.Ala485Asp	missense_variant	15/15	ENST00000244137.12
PEPD	NM_001166056.2 linkuse as main transcript	c.1331C>A	p.Ala444Asp	missense_variant	13/13
PEPD	NM_001166057.2 linkuse as main transcript	c.1262C>A	p.Ala421Asp	missense_variant	13/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PEPD	ENST00000244137.12 linkuse as main transcript	c.1454C>A	p.Ala485Asp	missense_variant	15/15	1	NM_000285.4	P1	P12955-1

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000820

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000481

AC:

AN:

249496

Hom.:

AF XY:

0.0000517

AC XY:

AN XY:

135384

show subpopulations

Gnomad AFR exome

AF:

0.000517

Gnomad AMR exome

AF:

0.000116

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000212

AC:

AN:

1461698

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727146

show subpopulations

Gnomad4 AFR exome

AF:

0.000597

Gnomad4 AMR exome

AF:

0.000157

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:

0.00

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000250

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74386

show subpopulations

Gnomad4 AFR

AF:

0.000820

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000135

Hom.:

Bravo

AF:

0.000332

ExAC

AF:

0.0000744

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 19, 2022	This sequence change replaces alanine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 485 of the PEPD protein (p.Ala485Asp). This variant is present in population databases (rs781570190, gnomAD 0.07%). This variant has not been reported in the literature in individuals affected with PEPD-related conditions. ClinVar contains an entry for this variant (Variation ID: 1410423). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Jun 02, 2022	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 28, 2021

The c.1454C>A (p.A485D) alteration is located in exon 15 (coding exon 15) of the PEPD gene. This alteration results from a C to A substitution at nucleotide position 1454, causing the alanine (A) at amino acid position 485 to be replaced by an aspartic acid (D). 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

0.097

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.14

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

T;.;.

Eigen

Benign

0.17

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Uncertain

0.087

MetaRNN

Benign

0.14

T;T;T

MetaSVM

Benign

-0.34

MutationAssessor

Benign

1.1

L;.;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.22

N;N;N

REVEL

Uncertain

0.36

Sift

Benign

0.031

D;D;D

Sift4G

Uncertain

0.048

D;T;D

Polyphen

0.61

P;.;.

Vest4

0.30

MVP

0.91

MPC

0.43

ClinPred

0.048

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.35

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