IL2 and amyotrophic lateral sclerosis: However, previous studies did not study the association between LD-IL-2 and survival outcomes of ALS patients although there was a significant increase in Tregs levels after 1 and 2 MIU IL-2 administration (Busse et al., 2010; Asano et al., 2017; Camu et al., 2020; Giovannelli et al., 2021).