Peroxisome Biogenesis Disorder 7a, also known as pbd7a, is related to peroxisome biogenesis disorder 7b and usher syndrome, and has symptoms including icterus An important gene associated with Peroxisome Biogenesis Disorder 7a is PEX26 (Peroxisomal Biogenesis Factor 26). Affiliated tissues include liver and eye, and related phenotypes are nystagmus and high palate