There are no reports of any iron chelation treatment attempts in patients with the other NBIA subtypes CoPAN, FAHN, Kufor-Rakeb disease, Woodhouse-Sakati syndrome, NBIA disorders caused by mutations in the genes SCP2, CRAT, AP4M1, REPS1, and GTPBP2. This evidence concerns the gene AP4M1 and neurodegeneration with brain iron accumulation.