Adoptive transfer (AT) of MBP-specific T cells following exposure to the calpain inhibitor SJA6017 reduced clinical symptoms of RR-EAE in SJL/J mice. RR-EAE was induced in naïve SJL/J mice via AT of MBP-specific T cells following exposure to 0 (vehicle only), 10, 50, and 100 μmol/L SJA6017 (ES-0, ES-10, ES-50, and ES-100). Although the animals were monitored for clinical signs daily, we only reported clinical scores (CS) during the acute phase (days 1–21 post-AT) and RR phase (days 61–94 post-AT) of the disease. Data were presented as mean score ± SEM (n = 3 to 5 in acute phase and n = 3 in RR phase). Significant difference was indicated by * p ≤ 0.05 compared with ES-0 and # p ≤ 0.05 compared with ES-10.