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. This evidence concerns the gene PANK1 and pantothenate kinase-associated neurodegeneration.