rs192607896

Positions:

Variant summary

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

The NM_181882.3(PRX):c.1510C>T(p.Leu504Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000335 in 1,610,762 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 0.00021 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

PRX
NM_181882.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -1.16

Variant links:

Genes affected

PRX (HGNC:13797): (periaxin) This gene encodes a protein involved in peripheral nerve myelin upkeep. The encoded protein contains 2 PDZ domains which were named after PSD95 (post synaptic density protein), DlgA (Drosophila disc large tumor suppressor), and ZO1 (a mammalian tight junction protein). Two alternatively spliced transcript variants have been described for this gene which encode different protein isoforms and which are targeted differently in the Schwann cell. Mutations in this gene cause Charcot-Marie-Tooth neuoropathy, type 4F and Dejerine-Sottas neuropathy. [provided by RefSeq, Jul 2008]

PRX links:

Genome browser will be placed here

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=0.02282691).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PRX	NM_181882.3 linkuse as main transcript	c.1510C>T	p.Leu504Phe	missense_variant	7/7	ENST00000324001.8
PRX	NM_001411127.1 linkuse as main transcript	c.1795C>T	p.Leu599Phe	missense_variant	7/7
PRX	XM_017027047.2 linkuse as main transcript	c.1408C>T	p.Leu470Phe	missense_variant	4/4
PRX	NM_020956.2 linkuse as main transcript	c.*1715C>T		3_prime_UTR_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRX	ENST00000324001.8 linkuse as main transcript	c.1510C>T	p.Leu504Phe	missense_variant	7/7	1	NM_181882.3	A2	Q9BXM0-1

Frequencies

GnomAD3 genomes

AF:

0.000211

AC:

AN:

151758

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000775

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000598

AC:

AN:

250836

Hom.:

AF XY:

0.0000663

AC XY:

AN XY:

135748

show subpopulations

Gnomad AFR exome

AF:

0.000813

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

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:

0.0000151

AC:

AN:

1458888

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

725548

show subpopulations

Gnomad4 AFR exome

AF:

0.000568

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.01e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000211

AC:

AN:

151874

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

AN XY:

74242

show subpopulations

Gnomad4 AFR

AF:

0.000773

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000772

Hom.:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 16, 2021

The c.1510C>T (p.L504F) alteration is located in exon 7 (coding exon 4) of the PRX gene. This alteration results from a C to T substitution at nucleotide position 1510, causing the leucine (L) at amino acid position 504 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Charcot-Marie-Tooth disease type 4

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 19, 2022

This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 504 of the PRX protein (p.Leu504Phe). This variant is present in population databases (rs192607896, gnomAD 0.08%). This variant has not been reported in the literature in individuals affected with PRX-related conditions. ClinVar contains an entry for this variant (Variation ID: 476951). 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: "Benign"; 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.26

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.70

CADD

Benign

8.3

DANN

Uncertain

0.98

DEOGEN2

Benign

0.31

Eigen

Benign

-0.86

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.045

LIST_S2

Benign

0.72

M_CAP

Benign

0.0041

MetaRNN

Benign

0.023

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.2

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.1

REVEL

Benign

0.040

Sift

Benign

0.22

Sift4G

Uncertain

0.059

Polyphen

0.92

Vest4

0.16

MVP

0.16

MPC

0.26

ClinPred

0.034

GERP RS

-2.7

Varity_R

0.054

gMVP

0.19

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