| Recruiting | 2/3 | 200 | Europe | Cladribine (MAVENCLAD®), Placebo | Queen Mary University of London, National Institute for Health Research, United Kingdom, Merck Serono Limited, UK, Multiple Sclerosis Society of Great Britain & Northern Ireland, National Multiple Sclerosis Society, Barts & The London NHS Trust | Advanced Multiple Sclerosis, Progressive Multiple Sclerosis | 12/24 | 12/27 | | |