iPSCs of two MPAN patients carrying homozygous recessive mutations c.[139G>A], p.[Gly47Ser] (MPAN 1), and c.[161G>T], p.[Gly54Val] (MPAN 2) in C19orf12 (Supporting Information Fig. S1A‐B) and two controls (control 1, control 2) (Supporting Information Fig. S1B) were differentiated into mDA neurons (two clones, 1 and 2, for MPAN 1; one clone for all other lines) (Supporting Information Fig. S2A‐B). The gene discussed is C19orf12; the disease is neurodegeneration with brain iron accumulation 4.