PT - JOURNAL ARTICLE AU - Chisari, Clara Grazia AU - Solaro, Claudio AU - Annunziata, Pasquale AU - Bergamaschi, Roberto AU - Bianco, Assunta AU - Bonavita, Simona AU - Brescia Morra, Vincenzo AU - Bruno Bossio, Roberto AU - Capello, Elisabetta AU - Castelli, Letizia AU - Cavalla, Paola AU - Costantino, Gianfranco AU - Centonze, Diego AU - Cottone, Salvatore AU - Danni, Maura Chiara AU - Esposito, Federica AU - Gajofatto, Alberto AU - Gasperini, Claudio AU - Guareschi, Angelica AU - Lanzillo, Roberta AU - Lus, Giacomo AU - Maniscalco, Giorgia Teresa AU - Matta, Manuela AU - Paolicelli, Damiano AU - Petrucci, Loredana AU - Pontecorvo, Simona AU - Righini, Isabella AU - Rovaris, Marco AU - Sessa, Edoardo AU - Spinicci, Gabriella AU - Spitaleri, Daniele AU - Valentino, Paola AU - Zaffaroni, Mauro AU - Zappia, Mario AU - Patti, Francesco TI - Nabiximols discontinuation rate in a large population of patients with multiple sclerosis: a 18-month multicentre study AID - 10.1136/jnnp-2019-322480 DP - 2020 Sep 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 914--920 VI - 91 IP - 9 4099 - http://jnnp.bmj.com/content/91/9/914.short 4100 - http://jnnp.bmj.com/content/91/9/914.full SO - J Neurol Neurosurg Psychiatry2020 Sep 01; 91 AB - Introduction Delta-δ-tetrahydrocannabinol and cannabidiol (THC:CBD) oromucosal spray is used as an add-on therapy option for moderate to severe multiple sclerosis (MS) spasticity resistant to other medications. Aims of this study were to provide real-life data on long-term clinical outcomes in a large population of Italian patients treated with THC:CBD and to evaluate predictors of THC:CBD therapy continuation.Materials and methods This prospective observational multicentre Italian study screened all patients with MS consecutively included in the Agenzia Italiana del Farmaco e-registry at the start of THC:CBD treatment (baseline), after 4 weeks (T1), 12±3 weeks (T2), 24±3 weeks (T3), 48±3 weeks (T4) and 72±3 weeks (T5) from baseline.Results A total of 1845 patients were recruited from 32 MS Italian centres. At T1, 1502 (81.4%) of patients reached a Numerical Rating Scale (NRS) improvement of ≥20%, with an NRS reduction of 26.9% at T1 and of 34.4% at T5. At T5, 725 patients (48.3% of 1502) discontinued treatment with highest discontinuation rate at T2 and T3. Daily number of puffs was generally stable through the observation period. The multivariate analysis showed that higher NRS scores at baseline (OR 2.28, 95% CI 1.15 to 6.36, p<0.01) and higher differences of NRS between T0 and T1 (OR 2.11, 95% CI 1.08 to 8.26, p<0.05) were associated with an increased probability to continue therapy after 18 months.Discussion THC:CBD effects were sustained for 18 months with a relatively stable number of puffs per day. About 50% of patients abandoned THC:CBD therapy for loss of efficacy or adverse events.