dbSNP rs555499679: PRX:p.Arg165Cys (chr19-40397859-G-A) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_181882.3(PRX):c.493C>T(p.Arg165Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000303 in 1,606,828 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R165H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00031 ( 5 hom. )

Consequence

PRX
NM_181882.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.69

Publications

3 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009560853).

BP6

Variant 19-40397859-G-A is Benign according to our data. Variant chr19-40397859-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 329287.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.00019 (29/152352) while in subpopulation SAS AF = 0.00517 (25/4832). AF 95% confidence interval is 0.0036. There are 0 homozygotes in GnomAd4. There are 25 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 5 AR,AD gene

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.493C>T	p.Arg165Cys	missense	Exon 7 of 7	NP_870998.2	Q9BXM0-1
PRX	NM_001411127.1		c.778C>T	p.Arg260Cys	missense	Exon 7 of 7	NP_001398056.1	A0A669KBF1
PRX	NM_020956.2		c.*698C>T		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.493C>T	p.Arg165Cys	missense	Exon 7 of 7	ENSP00000326018.6	Q9BXM0-1
PRX	ENST00000291825.11	TSL:1	c.*698C>T		3_prime_UTR	Exon 6 of 6	ENSP00000291825.6	Q9BXM0-2
PRX	ENST00000674005.2		c.778C>T	p.Arg260Cys	missense	Exon 7 of 7	ENSP00000501261.1	A0A669KBF1

Frequencies

GnomAD3 genomes

AF:

0.000190

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00517

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000718

AC:

166

AN:

231134

AF XY:

0.000919

show subpopulations

Gnomad AFR exome

AF:

0.0000714

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000194

Gnomad OTH exome

AF:

0.000356

GnomAD4 exome

AF:

0.000315

AC:

458

AN:

1454476

Hom.:

Cov.:

AF XY:

0.000441

AC XY:

319

AN XY:

723080

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33438

American (AMR)

AF:

0.0000231

AC:

AN:

43272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25882

East Asian (EAS)

AF:

0.00

AC:

AN:

39486

South Asian (SAS)

AF:

0.00506

AC:

430

AN:

85052

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52476

Middle Eastern (MID)

AF:

0.000695

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.00000811

AC:

AN:

1109074

Other (OTH)

AF:

0.000217

AC:

AN:

60038

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

120

150

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000190

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000336

AC XY:

AN XY:

74502

show subpopulations

African (AFR)

AF:

0.0000962

AC:

AN:

41594

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00517

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.523

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000854

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.000726

AC:

Asia WGS

AF:

0.00289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Charcot-Marie-Tooth disease type 4 (1)

Charcot-Marie-Tooth disease type 4F (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.38

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.40

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.29

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.016

MetaRNN

Benign

0.0096

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.55

PhyloP100

1.7

PrimateAI

Pathogenic

0.79

PROVEAN

Benign

-2.2

REVEL

Benign

0.17

Sift

Benign

0.045

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.66

MutPred

0.43

Loss of MoRF binding (P = 0.0093)

MVP

0.42

MPC

0.85

ClinPred

0.11

GERP RS

3.6

Varity_R

0.11

gMVP

0.53

Mutation Taster

=96/4

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

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over