Genetic Variant PEX7:p.Gly41Ala (chr6-136822787-G-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000288.4(PEX7):c.122G>C(p.Gly41Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000839 in 1,192,376 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. G41V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 8.4e-7 ( 0 hom. )

Consequence

PEX7
NM_000288.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.02

Publications

0 publications found

Variant links:

Genes affected

PEX7 (HGNC:8860): (peroxisomal biogenesis factor 7) This gene encodes the cytosolic receptor for the set of peroxisomal matrix enzymes targeted to the organelle by the peroxisome targeting signal 2 (PTS2). Defects in this gene cause peroxisome biogenesis disorders (PBDs), which are characterized by multiple defects in peroxisome function. There are at least 14 complementation groups for PBDs, with more than one phenotype being observed in cases falling into particular complementation groups. Although the clinical features of PBD patients vary, cells from all PBD patients exhibit a defect in the import of one or more classes of peroxisomal matrix proteins into the organelle. Defects in this gene have been associated with PBD complementation group 11 (PBD-CG11) disorders, rhizomelic chondrodysplasia punctata type 1 (RCDP1), and Refsum disease (RD). [provided by RefSeq, Oct 2008]

PEX7 Gene-Disease associations (from GenCC):

peroxisome biogenesis disorder
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
peroxisome biogenesis disorder 9B
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
rhizomelic chondrodysplasia punctata type 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
adult Refsum disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

PEX7 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.901

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
PEX7	NM_000288.4 link	c.122G>C	p.Gly41Ala	missense_variant	Exon 1 of 10	ENST00000318471.5	NP_000279.1
PEX7	XM_006715502.3 link	c.122G>C	p.Gly41Ala	missense_variant	Exon 1 of 7		XP_006715565.1
PEX7	XM_047418874.1 link	c.122G>C	p.Gly41Ala	missense_variant	Exon 1 of 6		XP_047274830.1
PEX7	NM_001410945.1 link	c.-577G>C		upstream_gene_variant			NP_001397874.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PEX7	ENST00000318471.5 link	c.122G>C	p.Gly41Ala	missense_variant	Exon 1 of 10	1	NM_000288.4	ENSP00000315680.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

8.39e-7

AC:

AN:

1192376

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

579710

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

23912

American (AMR)

AF:

0.00

AC:

AN:

11608

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

17306

East Asian (EAS)

AF:

0.00

AC:

AN:

26408

South Asian (SAS)

AF:

0.0000211

AC:

AN:

47432

European-Finnish (FIN)

AF:

0.00

AC:

AN:

28554

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3388

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

985220

Other (OTH)

AF:

0.00

AC:

AN:

48548

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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

Pathogenic

0.87

BayesDel_addAF

Pathogenic

0.37

BayesDel_noAF

Pathogenic

0.29

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.49

.;T;D

Eigen

Uncertain

0.45

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.85

T;T;T

M_CAP

Pathogenic

0.98

MetaRNN

Pathogenic

0.90

D;D;D

MetaSVM

Uncertain

0.75

MutationAssessor

Pathogenic

3.0

M;.;M

PhyloP100

6.0

PrimateAI

Pathogenic

0.81

PROVEAN

Pathogenic

-5.2

D;D;D

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

D;D;D

Sift4G

Benign

0.11

T;T;T

Polyphen

0.96

.;.;D

Vest4

0.62

MutPred

0.75

Gain of phosphorylation at T36 (P = 0.12);Gain of phosphorylation at T36 (P = 0.12);Gain of phosphorylation at T36 (P = 0.12);

MVP

1.0

MPC

0.50

ClinPred

1.0

GERP RS

4.4

PromoterAI

0.15

Neutral

(source)

Varity_R

0.76

gMVP

0.69

Mutation Taster

=22/78

disease causing

(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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over