• The MIROCALS trial testing low-dose interleukin-2 (IL-2) for motor neurone disease (MND) failed to meet its primary endpoint for the overall population, with results published in The Lancet on May 9, 2025.
• Post-hoc analysis revealed a potential benefit for patients with slower disease progression, identified by low neurofilament levels, showing 18% higher survival rates and 23% decreased functional decline compared to placebo.
• The UK MND Clinical Studies Group is currently evaluating the complex findings to determine next steps, with three MND organizations collaborating to expedite access to proven treatments.