PMID- 31280619 OWN - NLM STAT- MEDLINE DCOM- 20210303 LR - 20240123 IS - 2167-9223 (Electronic) IS - 2167-8421 (Linking) VI - 21 IP - 1-2 DP - 2020 Feb TI - Masitinib as an add-on therapy to riluzole in patients with amyotrophic lateral sclerosis: a randomized clinical trial. PG - 5-14 LID - 10.1080/21678421.2019.1632346 [doi] AB - Objective: To assess masitinib in the treatment of ALS. Methods: Double-blind study, randomly assigning 394 patients (1:1:1) to receive riluzole (100 mg/d) plus placebo or masitinib at 4.5 or 3.0 mg/kg/d. Following a blinded transition from phase 2 to phase 2/3, a prospectively defined two-tiered design was implemented based on ALSFRS-R progression rate from disease-onset to baseline (DeltaFS). This approach selects a more homogeneous primary efficacy population ("Normal Progressors", DeltaFS < 1.1 points/month) while concurrently permitting secondary assessment of the broader population. Primary endpoint was decline in ALSFRS-R at week-48 (DeltaALSFRS-R), with the high-dose "Normal Progressor" cohort being the prospectively declared primary efficacy population. Missing data were imputed via last observation carried forward (LOCF) methodology with sensitivity analyses performed to test robustness. Results: For the primary efficacy population, masitinib (n = 99) showed significant benefit over placebo (n = 102) with a DeltaALSFRS-R between-group difference (DeltaLSM) of 3.4 (95% CI 0.65-6.13; p = 0.016), corresponding to a 27% slowing in rate of functional decline (LOCF methodology). Sensitivity analyses were all convergent, including the conservative multiple imputation technique of FCS-REGPMM with a DeltaLSM of 3.4 (95% CI 0.53-6.33; p = 0.020). Secondary endpoints (ALSAQ-40, FVC, and time-to-event analysis) were also significant. Conversely, no significant treatment-effect according to DeltaALSFRS-R was seen for the broader "Normal and Fast Progressor" masitinib 4.5 mg/kg/d cohort, or either of the low-dose (masitinib 3.0 mg/kg/d) cohorts. Rates of treatment-emergent adverse events (AEs) (regardless of causality or post-onset DeltaFS) were 88% with masitinib 4.5 mg/kg/d, 85% with 3.0 mg/kg/d, and 79% with placebo. Likewise, rates of serious AE were 31, 23, and 18%, respectively. No distinct event contributed to the higher rate observed for masitinib and no deaths were related to masitinib. Conclusions: Results show that masitinib at 4.5 mg/kg/d can benefit patients with ALS. A confirmatory phase 3 study will be initiated to substantiate these data. FAU - Mora, Jesus S AU - Mora JS AD - ALS Unit, Hospital San Rafael, Madrid, Spain. FAU - Genge, Angela AU - Genge A AD - Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, Canada. FAU - Chio, Adriano AU - Chio A AUID- ORCID: 0000-0001-9579-5341 AD - Department of Neuroscience, University of Turin, Turin, Italy. FAU - Estol, Conrado J AU - Estol CJ AD - Neurological Center for Treatment and Rehabilitation, Buenos Aires, Argentina. FAU - Chaverri, Delia AU - Chaverri D AD - Department of Neurology, ALS Unit, Hospital Carlos III, Madrid, Spain. FAU - Hernandez, Maria AU - Hernandez M AD - Department of Neurology, ALS Unit, Hospital Carlos III, Madrid, Spain. FAU - Marin, Saul AU - Marin S AD - Department of Neurology, ALS Unit, Hospital Carlos III, Madrid, Spain. FAU - Mascias, Javier AU - Mascias J AD - Department of Neurology, ALS Unit, Hospital Carlos III, Madrid, Spain. FAU - Rodriguez, Gabriel E AU - Rodriguez GE AD - Neurology Department, Neuron Motor Disease Clinic, Hospital JM Ramos, Buenos Aires, Argentina. FAU - Povedano, Monica AU - Povedano M AD - Neurology Department, Bellvitge Hospital-IDIBELL, Barcelona, Spain. FAU - Paipa, Andres AU - Paipa A AD - Neurology Department, Bellvitge Hospital-IDIBELL, Barcelona, Spain. FAU - Dominguez, Raul AU - Dominguez R AD - Neurology Department, Bellvitge Hospital-IDIBELL, Barcelona, Spain. FAU - Gamez, Josep AU - Gamez J AUID- ORCID: 0000-0003-3127-7486 AD - Neurology Department, Vall d'Hebron University Hospital, Vall d'Hebron Research Institute, Autonomous University of Barcelona, Barcelona, Spain. FAU - Salvado, Maria AU - Salvado M AD - Neurology Department, Vall d'Hebron University Hospital, Vall d'Hebron Research Institute, Autonomous University of Barcelona, Barcelona, Spain. FAU - Lunetta, Christian AU - Lunetta C AD - NEMO Clinical Centre, Serena Onlus Foundation, Milan, Italy. FAU - Ballario, Carlos AU - Ballario C AD - Neurorosario, Rosario, Argentina. FAU - Riva, Nilo AU - Riva N AD - Department of Neurology-INSPE, San Raffaele Scientific Institute, Milan, Italy. FAU - Mandrioli, Jessica AU - Mandrioli J AD - Department of Neurosciences, St. Agostino-Estense Hospital, Azienda Ospedaliero Universitaria di Modena, Modena, Italy. FAU - Moussy, Alain AU - Moussy A AD - AB Science, Paris, France. FAU - Kinet, Jean-Pierre AU - Kinet JP AD - AB Science, Paris, France. AD - Department of Pathology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA, USA. FAU - Auclair, Christian AU - Auclair C AD - AB Science, Paris, France. AD - Department of Biology, Universite Paris Sud Universite Paris-Saclay CNRS UMR 8113, Ecole Normale Superieure de Cachan, Cachan, France. FAU - Dubreuil, Patrice AU - Dubreuil P AD - AB Science, Paris, France. AD - INSERM, CNRS, Institut Paoli-Calmettes, CRCM, Centre de Reference des Mastocytoses, Equipe Labelisee Ligue Nationale Contre le Cancer, Aix-Marseille University, Marseille, France; and. FAU - Arnold, Vincent AU - Arnold V AD - AB Science, Paris, France. FAU - Mansfield, Colin D AU - Mansfield CD AD - AB Science, Paris, France. FAU - Hermine, Olivier AU - Hermine O AD - AB Science, Paris, France. AD - Imagine Institute, INSERM UMR 1163 and CNRS ERL 8254, Laboratory of Cellular and Molecular Mechanisms of Hemathological Disorders and Therapeutic Implication, Hopital Necker, Paris, France. CN - AB10015 STUDY GROUP LA - eng PT - Clinical Trial, Phase II PT - Clinical Trial, Phase III PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20190707 PL - England TA - Amyotroph Lateral Scler Frontotemporal Degener JT - Amyotrophic lateral sclerosis & frontotemporal degeneration JID - 101587185 RN - 0 (Benzamides) RN - 0 (Piperidines) RN - 0 (Pyridines) RN - 0 (Thiazoles) RN - 7LJ087RS6F (Riluzole) RN - M59NC4E26P (masitinib) SB - IM CIN - Amyotroph Lateral Scler Frontotemporal Degener. 2020 Feb;21(1-2):1-2. PMID: 31603357 EIN - Amyotroph Lateral Scler Frontotemporal Degener. 2024 Feb;25(1-2):223. PMID: 37861274 MH - Adolescent MH - Adult MH - Aged MH - Amyotrophic Lateral Sclerosis/*drug therapy MH - Benzamides MH - Disease Progression MH - Double-Blind Method MH - Female MH - Humans MH - Male MH - Middle Aged MH - Piperidines MH - Pyridines MH - Riluzole/*therapeutic use MH - Thiazoles/*therapeutic use MH - Treatment Outcome MH - Young Adult OTO - NOTNLM OT - Clinical trials OT - masitinib OT - therapy OT - tyrosine kinase inhibitor EDAT- 2019/07/10 06:00 MHDA- 2021/03/04 06:00 CRDT- 2019/07/09 06:00 PHST- 2019/07/10 06:00 [pubmed] PHST- 2021/03/04 06:00 [medline] PHST- 2019/07/09 06:00 [entrez] AID - 10.1080/21678421.2019.1632346 [doi] PST - ppublish SO - Amyotroph Lateral Scler Frontotemporal Degener. 2020 Feb;21(1-2):5-14. doi: 10.1080/21678421.2019.1632346. Epub 2019 Jul 7.