XK and chorea-acanthocytosis: Chorea-acanthocytosis (ChAc) relates to mutations in VPS13A [3,4], McLeod Syndrome (MLS) has mutations in XK [5], Huntington’s Disease-like 2 (HDL2) in JPH3 [6], and panthotenate kinase-associated neurodegeneration (PKAN) in PANK2 [7].