Spinocerebellar Ataxia Functional Index
Secondary objectives are to demonstrate that acetyl-DL-leucine is effective in improving (1) motor function measured by the Spinocerebellar Ataxia Functional Index (SCAFI) and SARA subscore items and (2) QoL (EuroQoL 5 dimensions and 5 level version, EQ-5D-5  L), depression (Beck Depression Inventory, BDI-II) and fatigue (Fatigue Severity Score, FSS).