Zellweger spectrum disorders

Description

Curator note: this refers to the severe form of Zellweger spectrum, see https://github.com/monarch-initiative/mondo-build/issues/61; The most severe variant seen in the peroxisome biogenesis disorders that is characterized by neuronal migration defects in the brain, dysmorphic craniofacial features, profound hypotonia, neonatal seizures, and liver dysfunction.