Table S1 List of cases analyzed and immunohistochemistry results of Drosha staining Genotype Case ALS1 ALS2 ALS3 ALS4 ALS5 ALS6 ALS7 ALS8 ALS9 ALS10 ALS11 ALS12 ALS13 ALS14 ALS15 ALS16 ALS17 ALS18 ALS19 ALS20 ALS21 ALS22 ALS23 ALS24 ALS25 ALS26 ALS27 ALS28 FTLD-TDP1 FTLD-TDP2 FTLD-TDP3 FTLD-TDP4 FTLD-TDP5 FTLD-TDP6 FTLD-TDP7 FTLD-TDP8 FTLD-TDP9 FTLD-TDP10 FTLD-TDP11 FTLD-TDP12 FTLD-TDP13 FTLD-TDP14 FTLD-TDP15 FTLD-TDP16 FTLD-TDP17 FTLD-TDP18 FTLD-TDP19 FTLD-TDP20 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 AD1 AD2 HpScl1 HpScl2 FTLD-FUS FTLD-Tau DLB1 DLB2 Gender F F M F M M M M M F F M M F M M M M F M F M M M F M M M F F M F F M F M M M M M F M M F M M F M F F M F M M F M F M F F M F M F M M Age 62 72 82 48 59 65 63 48 77 66 72 56 74 62 71 57 39 54 56 57 69 42 60 70 59 58 54 54 63 51 48 87 72 76 62 78 99 54 69 54 54 57 73 61 77 48 76 76 74 65 55 61 68 72 65 67 68 59 84 78 62 56 51 62 73 68 TDP-43 Subtype C A A B B C C B B C B C B B B B B B B B Presence of Drosha NCIs GGGGCC repeats expansion FCx + + + + + + + + + + + + + + + + + + + + + + + + + - NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA + + NA + NA + NA NA NA NA ++ ++ + NA NA NA + + NA NA NA NA NA NA NA NA NA NA NA NA NA Hp Cb DG NA + + + ++ ++ + ++ + ++ + ++ + + + +++ NA + ++ ++ + ++ NA + NA + + NA - Gr layer NA NA NA NA NA NA NA ++ NA NA ++ NA NA NA NA NA NA ++ ++ NA NA + + NA NA NA NA NA NA NA NA NA NA NA Cases: ALS (Amyotrophic Lateral Sclerosis), FTLD-TDP (Frontotemporal Lobar Degeneration with TDP-43 pathology), C (control), AD (Alzheimer Disease), HpScl (Hippocampal Sclerosis), DLB (Dementia with Lewy Bodies) Gender: F (Female), M (Male) Genotype: - (non GGGGCC expanded repeats), + (GGGGCC expanded repeats) Presence of Drosha NCIs (neuronal cytoplasmic inclusions): FCx (Frontal Cortex), Hp (Hippocampus), DG (Dentate Gyrus), Cb (Cerebellum), Gr Layer (Granular layer), + (1-3 inclusions/field), ++ (3-10 inclusions/field), +++ (more than 10 inclusions/field)