FA2H and fatty acid hydroxylase-associated neurodegeneration: Different disorders were grouped under this category (Table 1): neuroferritinopathy, aceruloplasminemia, pantothenate kinase-associated neurodegeneration (PKAN), phospholipase 2, group VI-associated neurodegeneration (PLAN), mitochondrial membrane protein-associated neurodegeneration (MPAN), fatty acid hydroxylase-associated neurodegeneration (FAHN), β-propeller protein-associated neurodegeneration (BPAN), and two other forms, the Kufor–Rakeb disease and the Woodhouse–Sakati syndrome, which are not always associated to brain iron accumulation.