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Safety and efficacy of tolebrutinib, an oral brain-penetrant BTK inhibitor, in relapsing multiple sclerosis: a phase 2b, randomised, double-blind, placebo-controlled trial
DS. Reich, DL. Arnold, P. Vermersch, A. Bar-Or, RJ. Fox, A. Matta, T. Turner, E. Wallström, X. Zhang, M. Mareš, FA. Khabirov, A. Traboulsee, Tolebrutinib Phase 2b Study Group
Jazyk angličtina Země Velká Británie
Typ dokumentu klinické zkoušky, fáze II, časopisecké články, multicentrická studie, randomizované kontrolované studie, práce podpořená grantem
Grantová podpora
Z99 NS999999
Intramural NIH HHS - United States
Nursing & Allied Health Database (ProQuest) od 2002-05-01 do Před 2 měsíci
Health & Medicine (ProQuest) od 2002-05-01 do Před 2 měsíci
Psychology Database (ProQuest) od 2002-05-01 do Před 2 měsíci
Odkazy
PubMed
34418400
DOI
10.1016/s1474-4422(21)00237-4
Knihovny.cz E-zdroje
- MeSH
- centrální nervový systém diagnostické zobrazování účinky léků imunologie patologie MeSH
- dospělí MeSH
- dvojitá slepá metoda MeSH
- hodnocení výsledků zdravotní péče * MeSH
- inhibitory proteinkinas aplikace a dávkování škodlivé účinky farmakokinetika farmakologie MeSH
- klinické křížové studie MeSH
- lidé středního věku MeSH
- lidé MeSH
- magnetická rezonanční tomografie MeSH
- mladý dospělý MeSH
- proteinkinasa BTK antagonisté a inhibitory MeSH
- recidiva MeSH
- relabující-remitující roztroušená skleróza diagnostické zobrazování farmakoterapie imunologie patologie MeSH
- vztah mezi dávkou a účinkem léčiva MeSH
- zánět diagnostické zobrazování farmakoterapie imunologie patologie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky, fáze II MeSH
- multicentrická studie MeSH
- práce podpořená grantem MeSH
- randomizované kontrolované studie MeSH
BACKGROUND: Tolebrutinib is an oral, CNS-penetrant, irreversible inhibitor of Bruton's tyrosine kinase, an enzyme expressed in B lymphocytes and myeloid cells including microglia, which are major drivers of inflammation in multiple sclerosis. We aimed to determine the dose-response relationship between tolebrutinib and the reduction in new active brain MRI lesions in patients with relapsing multiple sclerosis. METHODS: We did a 16-week, phase 2b, randomised, double-blind, placebo-controlled, crossover, dose-finding trial at 40 centres (academic sites, specialty clinics, and general neurology centres) in ten countries in Europe and North America. Eligible participants were adults aged 18-55 years with diagnosed relapsing multiple sclerosis (either relapsing-remitting or relapsing secondary progressive multiple sclerosis), and one or more of the following criteria: at least one relapse within the previous year, at least two relapses within the previous 2 years, or at least one active gadolinium-enhancing brain lesion in the 6 months before screening. Exclusion criteria included a diagnosis of primary progressive multiple sclerosis or a diagnosis of secondary progressive multiple sclerosis without relapse. We used a two-step randomisation process to randomly assign eligible participants (1:1) to two cohorts, then further randomly assign participants in each cohort (1:1:1:1) to four tolebrutinib dose groups (5, 15, 30, and 60 mg administered once daily as an oral tablet). Cohort 1 received tolebrutinib for 12 weeks, then matched placebo (ie, identical looking tablets) for 4 weeks; cohort 2 received 4 weeks of placebo followed by 12 weeks of tolebrutinib. Participants and investigators were masked for dose and tolebrutinib-placebo administration sequence; investigators, study team members, and study participants did not have access to unmasked data. MRI scans were done at screening and every 4 weeks over 16 weeks. The primary efficacy endpoint was the number of new gadolinium-enhancing lesions detected on the scan done after 12 weeks of tolebrutinib treatment (assessed at week 12 for cohort 1 and week 16 for cohort 2), relative to the scan done 4 weeks previously, and compared with the lesions accumulated during 4 weeks of placebo run-in period in cohort 2. Efficacy data were analysed in a modified intention-to-treat population, using a two-step multiple comparison procedure with modelling analysis. Safety was assessed for all participants who received at least one dose of study drug. This trial is registered with ClinicalTrials.gov (NCT03889639), EudraCT (2018-003927-12), and WHO (U1111-1220-0572), and has been completed. FINDINGS: Between May 14, 2019, and Jan 2, 2020, we enrolled and randomly assigned 130 participants to tolebrutinib: 33 to 5 mg, 32 to 15 mg, 33 to 30 mg, and 32 to 60 mg. 129 (99%) completed the treatment regimen and 126 were included in the primary analysis. At treatment week 12, there was a dose-dependent reduction in the number of new gadolinium-enhancing lesions (mean [SD] lesions per patient: placebo, 1·03 [2·50]; 5 mg, 1·39 [3·20]; 15 mg, 0·77 [1·48]; 30 mg, 0·76 [3·31]; 60 mg, 0·13 [0·43]; p=0·03). One serious adverse event was reported (one patient in the 60 mg group was admitted to hospital because of a multiple sclerosis relapse). The most common non-serious adverse event during tolebrutinib treatment was headache (in one [3%] of 33 in the 5 mg group; three [9%] of 32 in the 15 mg group; one [3%] of 33 in the 30 mg group; and four [13%] of 32 in the 60 mg group). No safety-related discontinuations or treatment-related deaths occurred. INTERPRETATION: 12 weeks of tolebrutinib treatment led to a dose-dependent reduction in new gadolinium-enhancing lesions, the 60 mg dose being the most efficacious, and the drug was well tolerated. Reduction of acute inflammation, combined with the potential to modulate the immune response within the CNS, provides a scientific rationale to pursue phase 3 clinical trials of tolebrutinib in patients with relapsing and progressive forms of multiple sclerosis. FUNDING: Sanofi.
Department of Medicine University of British Columbia Vancouver BC Canada
Department of Neurology Pardubice Regional Hospital Pardubice Czech Republic
MellenCenter for Multiple Sclerosis Cleveland Clinic Cleveland OH USA
NeuroRx Research and Montréal Neurological Institute McGill University Montréal QC Canada
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