Ocrelizumab in MS patients with persistence of disease activity after alemtuzumab: A multi-center Italian study

Author:

Lapucci Caterina1,Frau Jessica2,Cocco Eleonora23ORCID,Coghe Giancarlo2,Petracca Maria4ORCID,Lanzillo Roberta5,Brescia Morra Vincenzo5,Nicoletti Carolina Gabri6,Landi Doriana6,Marfia Girolama6,Vercellino Marco7,Cavalla Paola7ORCID,Bianco Assunta8,Mirabella Massimiliano89ORCID,Torri Clerici Valentina10,Tomas Eugenia10,Ferrò Maria Teresa11,Grossi Paola11,Nozzolillo Agostino12,Moiola Lucia12ORCID,Zaffaroni Mauro13,Ronzoni Marco14,Pinardi Federica15,Novi Giovanni1ORCID,Cellerino Maria16,Uccelli Antonio116,Inglese Matilde116

Affiliation:

1. IRCCS Ospedale Policlinico San Martino, Genoa, Italy

2. Centro regionale per la diagnosi e la cura della Sclerosi Multipla, ASL Cagliari, Cagliari, Italy

3. Department of Medical Sciences and Public Health, Università degli studi di Cagliari, Cagliari, Italy

4. Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy

5. Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples, Italy

6. MS Center, Tor Vergata University of Rome, Rome, Italy

7. Division of Neurology, Department of Neuroscience and Mental Health, City of Health and Science, University Hospital of Torino, Turin, Italy

8. Multiple Sclerosis Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy

9. Centro di Ricerca per la Sclerosi Multipla “Anna Paola Batocchi,” Università Cattolica del Sacro Cuore, Rome, Italy

10. Neuroimmunology and Neuromuscular Diseases Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano, Italy

11. Neuroimmunology, Neurological Unit, Cerebrovascular Department, Center for Multiple Sclerosis, ASST Crema, Crema, Italy

12. Multiple Sclerosis Center, Neurology Department, IRCCS San Raffaele Hospital, Milan, Italy

13. Centro Sclerosi Multipla, Ospedale di Gallarate—ASST della Valle Olona, Gallarate, Italy

14. U.O. Neurologia, ASST Rhodense, Garbagnate Milanese, Italy

15. IRCCS Istituto delle scienze neurologiche di Bologna, UOSI Riabilitazione Sclerosi Multipla Bologna, Bologna, Italy

16. Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy

Abstract

Background: The reason why some multiple sclerosis (MS) patients show disease activity after alemtuzumab (ALM) is still unclear, but ocrelizumab (OCR) could represent an interesting sequential therapeutic approach. Objectives: To investigate safety and efficacy of OCR in MS patients with disease activity after two ALM courses. Methods: Observational retrospective multi-centers Italian cohort study. Results: Seventy-two subjects were included. Mean follow-up (FU) was 2.4 (±1) years. Forty-five patients (62.5%) experienced at least one adverse event (AE), with infections accounting for 96.7% of cases. A reduction in total lymphocytes was observed between OCR start and 6 months FU, driven by BCD19+ lymphocytes depletion ( p < 0.001). Immunoglobulin M (IgM) levels decreased between OCR start and 6 months FU ( p < 0.001). At 2-year FU, relapse, magnetic resonance imaging (MRI) activity and disability worsening-free survival were 92.1%, 90.8%, and 89.2%. The evidence of inflammatory activity between the two ALM courses was associated with higher risk of relapse, MRI activity, and NEDA-3 status loss in relapsing-remitting multiple sclerosis (RRMS; p = 0.02, p = 0.05, p = 0.01, respectively). Conclusions: OCR after two ALM courses seemed to be safe and effective. Early IgM hypogammaglobulinemia occurred in a high proportion of patients. The evidence of inflammatory activity between ALM courses seemed to increase the risk of MS re-activation on OCR treatment.

Funder

National Recovery and Resilience Plan

Fondazione Italiana Sclerosi Multipla

Ministero della Salute

Publisher

SAGE Publications

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