SOD1 and amyotrophic lateral sclerosis: Although there is consistent evidence of non‐cell autonomous toxicity mediated by astrocytes harboring SOD1 mutations (Ilieva et al., 2009; Marchetto et al., 2008; Nagai et al., 2007; Papadeas et al., 2011; Tripathi et al., 2017; Tyzack et al., 2017), data are either lacking or conflicting for other ALS‐related mutations (Haidet‐Phillips et al., 2013; Serio et al., 2013; Tong et al., 2013).