MAPT and pantothenate kinase-associated neurodegeneration: This is a novel finding suggesting that BPAN may be considered as a tauopathy and further strengthening the link between tauopathies and other forms of NBIA such as PKAN, PLAN and MPAN in which a degree of neurofibrillary tangle pathology is a feature in some cases although extensive tau pathology is more often associated with PLAN [2, 10–13].