label: Peroxisome Biogenesis Disorder 1B
label_lc: peroxisome biogenesis disorder 1b
description: "An autosomal recessive condition caused by mutation(s) in the PEX1 gene, encoding peroxisome biogenesis factor 1. Peroxisome biogenesis disorder 1B is characterized by overlapping phenotypes of neonatal adrenoleukodystrophy and infantile Refsum disease."