OBJECTIVES: Despite the therapeutic value of current rheumatoid arthritis (RA) treatments, agents with alternative modes of action are required. Mavrilimumab, a fully human monoclonal antibody targeting the granulocyte-macrophage colony-stimulating factor receptor-α, was evaluated in patients with moderate-to-severe RA. METHODS: In a phase IIb study (NCT01706926), patients with inadequate response to ≥1 synthetic disease-modifying antirheumatic drug(s), Disease Activity Score 28 (DAS28)-C reactive protein (CRP)/erythrocyte sedimentation rate ≥3.2, ≥4 swollen joints despite methotrexate (MTX) were randomised 1:1:1:1 to subcutaneous mavrilimumab (150, 100, 30 mg), or placebo every other week (eow), plus MTX for 24 weeks. Coprimary outcomes were DAS28-CRP change from baseline to week 12 and American College of Rheumatology (ACR) 20 response rate (week 24). RESULTS: 326 patients were randomised (150 mg, n=79; 100 mg, n=85; 30 mg, n=81; placebo, n=81); 305 completed the study (September 2012-June 2013). Mavrilimumab treatment significantly reduced DAS28-CRP scores from baseline compared with placebo (change from baseline (SE); 150 mg: -1.90 (0.14), 100 mg: -1.64 (0.13), 30 mg: -1.37 (0.14), placebo: -0.68 (0.14); p<0.001; all dosages compared with placebo).Significantly more mavrilimumab-treated patients achieved ACR20 compared with placebo (week 24: 73.4%, 61.2%, 50.6% vs 24.7%, respectively (p<0.001)). Adverse events were reported in 43 (54.4%), 36 (42.4%), 41 (50.6%) and 38 (46.9%) patients in the mavrilimumab 150, 100, 30 mg eow and placebo groups, respectively. No treatment-related safety signals were identified. CONCLUSIONS: Mavrilimumab significantly decreased RA disease activity, with clinically meaningful responses observed 1 week after treatment initiation, representing a novel mechanism of action with persuasive therapeutic potential. TRIAL REGISTRATION NUMBER: NCT01706926; results.
- MeSH
- antirevmatika aplikace a dávkování škodlivé účinky terapeutické užití MeSH
- biologické markery krev MeSH
- C-reaktivní protein metabolismus MeSH
- dospělí MeSH
- dvojitá slepá metoda MeSH
- injekce subkutánní MeSH
- lidé středního věku MeSH
- lidé MeSH
- methotrexát terapeutické užití MeSH
- monoklonální protilátky aplikace a dávkování škodlivé účinky terapeutické užití MeSH
- opakovaná terapie MeSH
- receptory faktoru stimulujícího granulocyto-makrofágové kolonie antagonisté a inhibitory MeSH
- revmatoidní artritida krev farmakoterapie MeSH
- stupeň závažnosti nemoci MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky, fáze II MeSH
- multicentrická studie MeSH
- randomizované kontrolované studie MeSH
