Sarah Leigh changed review comment from: Comment on mode of inheritance: The mode of inheritance for PEX6 has been set to: BOTH monoallelic and biallelic, autosomal or pseudoautosomal, in order to detect the dominant Peroxisome biogenesis disorder 4B (OMIM:614863). Incomplete penetrance has been noted, in order to highlight that unaffected parents may also carry rs61753230.; to: Comment on mode of inheritance: The mode of inheritance for PEX6 has been set to: BOTH monoallelic and biallelic, autosomal or pseudoautosomal, in order to detect the dominant Peroxisome biogenesis disorder 4B (OMIM:614863). Incomplete penetrance has been noted for this gene, in order to highlight that unaffected parents may also carry rs61753230.
Sarah Leigh edited their review of gene: PEX6: Added comment: For Peroxisome biogenesis disorder 4B (OMIM:614863), Falkenberg et al (PMID: 29220678) has identified Allelic Expression Imbalance (AEI) as a mechanism responsible for the condition. Affected patients (7 unrelated cases) were monoallelic for rs61753230 (c.2578C>T, p.Arg860Trp) and rs144286892 (c.∗442_445 delTAAA), with these variants being on the same chromosome (cis). It would appear that rs144286892 causes the over expression of the allele that it is on, resulting in over expression of rs61753230. The unaffected parents analysed were monoallelic for rs61753230 and biallelic for rs144286892, resulting in overexpression of both rs61753230 and wild type alleles (PMID: 29220678). Experimental evidence revealed that rs61753230 has a dominant-negative effect on the function of the PEX1- PEX6 complex in peroxisomal matrix protein import (PMID: 29220678).; Changed mode of pathogenicity: Other; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Sarah Leigh Added comment: Comment on mode of inheritance: The mode of inheritance for PEX6 has been set to: BOTH monoallelic and biallelic, autosomal or pseudoautosomal, in order to detect the dominant Peroxisome biogenesis disorder 4B (OMIM:614863). Incomplete penetrance has been noted, in order to highlight that unaffected parents may also carry rs61753230.
Sarah Leigh Mode of inheritance for gene: PEX6 was changed from BIALLELIC, autosomal or pseudoautosomal to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Julia Baptista reviewed gene: PEX6: Rating: GREEN; Mode of pathogenicity: None; Publications: 29220678, 20301621; Phenotypes: Zellweger syndrome; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal; Current diagnostic: yes