Genetic Variant NM_144651.5:c.1128C>A (chr8-51453640-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_144651.5(PXDNL):c.1128C>A(p.His376Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,696 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. H376H) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PXDNL
NM_144651.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.79

Publications

0 publications found

Variant links:

Genes affected

PXDNL (HGNC:26359): (peroxidasin like) Predicted to enable heme binding activity and peroxidase activity. Predicted to be involved in hydrogen peroxide catabolic process. Predicted to be located in cytoplasm. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

PXDNL links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.11093634).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PXDNL	NM_144651.5 link	c.1128C>A	p.His376Gln	missense_variant	Exon 10 of 23	ENST00000356297.5	NP_653252.4	A1KZ92-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PXDNL	ENST00000356297.5 link	c.1128C>A	p.His376Gln	missense_variant	Exon 10 of 23	1	NM_144651.5	ENSP00000348645.4		A1KZ92-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461696

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727124

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111866

Other (OTH)

AF:

0.00

AC:

AN:

60374

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.38

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.56

CADD

Benign

6.1

(source)

DANN

Benign

0.65

DEOGEN2

Benign

0.0038

Eigen

Benign

-0.80

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.35

M_CAP

Benign

0.0076

MetaRNN

Benign

0.11

MetaSVM

Benign

-0.96

MutationAssessor

Benign

-0.29

PhyloP100

1.8

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.7

REVEL

Benign

0.074

Sift

Benign

0.38

Sift4G

Benign

0.53

Polyphen

0.032

Vest4

0.091

MutPred

0.46

Gain of loop (P = 0.1069);

MVP

0.19

MPC

0.34

ClinPred

0.14

GERP RS

0.54

Varity_R

0.11

gMVP

0.11

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over