rs1129187

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000287.4(PEX6):​c.2816C>G​(p.Pro939Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P939Q) has been classified as Benign.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

PEX6
NM_000287.4 missense

Scores

2
17

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 0.306

Publications

64 publications found
Variant links:
Genes affected
PEX6 (HGNC:8859): (peroxisomal biogenesis factor 6) This gene encodes a member of the AAA (ATPases associated with diverse cellular activities) family of ATPases. This member is a predominantly cytoplasmic protein, which plays a direct role in peroxisomal protein import and is required for PTS1 (peroxisomal targeting signal 1, a C-terminal tripeptide of the sequence ser-lys-leu) receptor activity. Mutations in this gene cause peroxisome biogenesis disorders of complementation group 4 and complementation group 6. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]
PEX6 Gene-Disease associations (from GenCC):
  • peroxisome biogenesis disorder
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • peroxisome biogenesis disorder 4A (Zellweger)
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Myriad Women’s Health
  • peroxisome biogenesis disorder 4B
    Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
  • Heimler syndrome 2
    Inheritance: AR Classification: MODERATE Submitted by: G2P
  • autosomal recessive cerebellar ataxia-blindness-deafness syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Zellweger spectrum disorders
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.062992275).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PEX6NM_000287.4 linkc.2816C>G p.Pro939Arg missense_variant Exon 17 of 17 ENST00000304611.13 NP_000278.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PEX6ENST00000304611.13 linkc.2816C>G p.Pro939Arg missense_variant Exon 17 of 17 1 NM_000287.4 ENSP00000303511.8
PEX6ENST00000244546.4 linkc.*352C>G 3_prime_UTR_variant Exon 15 of 15 1 ENSP00000244546.4

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000402
AC:
1
AN:
248532
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
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:
0.00000900
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.00000205
AC:
3
AN:
1461076
Hom.:
0
Cov.:
47
AF XY:
0.00000138
AC XY:
1
AN XY:
726842
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33470
American (AMR)
AF:
0.00
AC:
0
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86232
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53128
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5478
European-Non Finnish (NFE)
AF:
0.00000270
AC:
3
AN:
1111872
Other (OTH)
AF:
0.00
AC:
0
AN:
60340
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.542
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Zellweger spectrum disorders Uncertain:1
Apr 20, 2021
Natera, Inc.
Significance:Uncertain significance
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Peroxisome biogenesis disorder Uncertain:1
Jun 20, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 939 of the PEX6 protein (p.Pro939Arg). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PEX6-related conditions. ClinVar contains an entry for this variant (Variation ID: 1035564). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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
0.086
BayesDel_addAF
Benign
-0.013
T
BayesDel_noAF
Benign
-0.26
CADD
Benign
7.5
DANN
Benign
0.97
DEOGEN2
Benign
0.079
T
Eigen
Benign
-0.68
Eigen_PC
Benign
-0.69
FATHMM_MKL
Benign
0.30
N
LIST_S2
Benign
0.83
T
M_CAP
Uncertain
0.095
D
MetaRNN
Benign
0.063
T
MetaSVM
Benign
-0.58
T
MutationAssessor
Benign
1.4
L
PhyloP100
0.31
PrimateAI
Benign
0.33
T
PROVEAN
Uncertain
-2.9
D
REVEL
Benign
0.20
Sift
Benign
0.082
T
Sift4G
Benign
0.49
T
Polyphen
0.040
B
Vest4
0.10
MutPred
0.19
Loss of glycosylation at P939 (P = 0.0409);
MVP
0.84
MPC
0.16
ClinPred
0.17
T
GERP RS
0.55
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.040
gMVP
0.11
Mutation Taster
=94/6
polymorphism

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

Other links and lift over

dbSNP: rs1129187; hg19: chr6-42932200; API