Genetic Variant PRX:p.Pro487Gln (chr19-40396892-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_181882.3(PRX):c.1460C>A(p.Pro487Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P487L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Consequence

PRX
NM_181882.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.38

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease type 4
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Charcot-Marie-Tooth disease type 4F
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
Charcot-Marie-Tooth disease type 3
Inheritance: AD, AR Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics

PRX links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181882.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PRX	NM_181882.3	MANE Select	c.1460C>A	p.Pro487Gln	missense	Exon 7 of 7	NP_870998.2	Q9BXM0-1
PRX	NM_001411127.1		c.1745C>A	p.Pro582Gln	missense	Exon 7 of 7	NP_001398056.1	A0A669KBF1
PRX	NM_020956.2		c.*1665C>A		3_prime_UTR	Exon 6 of 6	NP_066007.1	Q9BXM0-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PRX	ENST00000324001.8	TSL:1 MANE Select	c.1460C>A	p.Pro487Gln	missense	Exon 7 of 7	ENSP00000326018.6	Q9BXM0-1
PRX	ENST00000291825.11	TSL:1	c.*1665C>A		3_prime_UTR	Exon 6 of 6	ENSP00000291825.6	Q9BXM0-2
PRX	ENST00000674005.2		c.1745C>A	p.Pro582Gln	missense	Exon 7 of 7	ENSP00000501261.1	A0A669KBF1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.51

BayesDel_addAF

Benign

-0.050

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.74

Eigen

Benign

0.15

Eigen_PC

Benign

-0.042

FATHMM_MKL

Benign

0.25

LIST_S2

Benign

0.76

M_CAP

Benign

0.029

MetaRNN

Uncertain

0.55

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.3

PhyloP100

2.4

PrimateAI

Benign

0.34

PROVEAN

Pathogenic

-5.0

REVEL

Benign

0.19

Sift

Benign

0.054

Sift4G

Uncertain

0.0030

Polyphen

1.0

Vest4

0.44

MutPred

0.37

Gain of MoRF binding (P = 0.234)

MVP

0.66

MPC

0.77

ClinPred

0.98

GERP RS

3.5

Varity_R

0.21

gMVP

0.33

Mutation Taster

=89/11

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over