Refsum's disease is due to deficiency of which of the following enzyme?
Phytanic alpha oxidase 

Refsum disease is caused by a deficiency of phytanic acid α -hydroxylase (α -oxidase) which is required for a-oxidation of methylated fatty acids, phytanic acid.
Malonate dehydrogenase
Thiophorase
Succinate thiokinase
Phytanic alpha oxidase