Yingxiao (TK) Shi and colleagues in the Ichida Lab developed induced motor neuron (iMN) models from C9ORF72 and sporadic ALS (sALS) patients, which together comprise ~90% of patients. iMNs from C9ORF72 and several sporadic ALS patients share two common defects involving autophagosomes and glutamate receptors. An anticoagulation-deficient form of activated protein C, 3K3A-APC, rescues these defects in both C9ORF72 and sporadic ALS iMNs. To read the paper, visit insight.jci.org/articles/view/127736.