PMID- 29361199 OWN - NLM STAT- MEDLINE DCOM- 20190624 LR - 20191210 IS - 2326-5205 (Electronic) IS - 2326-5191 (Print) IS - 2326-5191 (Linking) VI - 70 IP - 5 DP - 2018 May TI - Mavrilimumab, a Fully Human Granulocyte-Macrophage Colony-Stimulating Factor Receptor alpha Monoclonal Antibody: Long-Term Safety and Efficacy in Patients With Rheumatoid Arthritis. PG - 679-689 LID - 10.1002/art.40420 [doi] AB - OBJECTIVE: Mavrilimumab, a human monoclonal antibody, targets granulocyte-macrophage colony-stimulating factor receptor alpha. We undertook to determine the long-term safety and efficacy of mavrilimumab in rheumatoid arthritis patients in 2 phase IIb studies (1071 and 1107) and in 1 open-label extension study (ClinicalTrials.gov identifier: NCT01712399). METHODS: In study 1071, patients with an inadequate response to disease-modifying antirheumatic drugs (DMARDs) received mavrilimumab (30, 100, or 150 mg) or placebo every other week plus methotrexate. In study 1107, patients with an inadequate response to anti-tumor necrosis factor agents and/or DMARDs received 100 mg mavrilimumab every other week or 50 mg golimumab every 4 weeks plus methotrexate. Patients entering the open-label extension study received 100 mg mavrilimumab every other week plus methotrexate. Long-term safety and efficacy of mavrilimumab were assessed. RESULTS: A total of 442 patients received mavrilimumab (14 of 245 patients from study 1071, 9 of 70 patients from study 1107, and 52 of 397 patients from the open-label extension study discontinued mavrilimumab treatment throughout the studies). The cumulative safety exposure was 899 patient-years; the median duration of mavrilimumab treatment was 2.5 years (range 0.1-3.3 years). The most common treatment-emergent adverse events (AEs) were nasopharyngitis (n = 69; 7.68 per 100 patient-years) and bronchitis (n = 51; 5.68 per 100 patient-years). At weeks 74 and 104, 3.5% and 6.2% of patients, respectively, demonstrated reduction in forced expiratory volume in 1 second, while 2.9% and 3.4% of patients, respectively, demonstrated reduction in forced vital capacity (>20% reduction from baseline to <80% predicted). Most pulmonary changes were transient and only infrequently associated with AEs. Mavrilimumab at 100 mg every other week demonstrated sustained efficacy; at week 122, 65.0% of patients achieved a Disease Activity Score in 28 joints using the C-reactive protein level (DAS28-CRP) of <3.2, and 40.6% of patients achieved a DAS28-CRP of <2.6. CONCLUSION: Long-term treatment with mavrilimumab maintained response and was well-tolerated with no increased incidence of treatment-emergent AEs. Safety data were comparable with those from both phase IIb qualifying studies. CI - (c) 2018 The Authors. Arthritis & Rheumatology published by Wiley Periodicals, Inc. on behalf of American College of Rheumatology. FAU - Burmester, Gerd R AU - Burmester GR AD - Charite - University Medicine Berlin, Berlin, Germany. FAU - McInnes, Iain B AU - McInnes IB AD - University of Glasgow, Glasgow, UK. FAU - Kremer, Joel M AU - Kremer JM AD - The Albany Medical College, Albany, New York. FAU - Miranda, Pedro AU - Miranda P AD - Centro de Estudios Reumatologicos, Santiago, Chile. FAU - Vencovsky, Jiri AU - Vencovsky J AD - Institute of Rheumatology, Prague, Czech Republic. FAU - Godwood, Alex AU - Godwood A AD - MedImmune, Cambridge, UK. FAU - Albulescu, Marius AU - Albulescu M AD - MedImmune, Cambridge, UK. FAU - Michaels, M Alex AU - Michaels MA AD - MedImmune, Gaithersburg, Maryland. FAU - Guo, Xiang AU - Guo X AD - MedImmune, Gaithersburg, Maryland. FAU - Close, David AU - Close D AD - MedImmune, Cambridge, UK. FAU - Weinblatt, Michael AU - Weinblatt M AD - Brigham and Women's Hospital, Boston, Massachusetts. LA - eng SI - ClinicalTrials.gov/NCT01712399 PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20180331 PL - United States TA - Arthritis Rheumatol JT - Arthritis & rheumatology (Hoboken, N.J.) JID - 101623795 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antirheumatic Agents) RN - 0 (Receptors, Granulocyte-Macrophage Colony-Stimulating Factor) RN - 1158JD1P9A (mavrilimumab) SB - IM MH - Adult MH - Antibodies, Monoclonal/*therapeutic use MH - Antibodies, Monoclonal, Humanized MH - Antirheumatic Agents/*therapeutic use MH - Arthritis, Rheumatoid/*drug therapy MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Middle Aged MH - Receptors, Granulocyte-Macrophage Colony-Stimulating Factor/*therapeutic use MH - Treatment Outcome PMC - PMC5947536 EDAT- 2018/01/24 06:00 MHDA- 2019/06/25 06:00 PMCR- 2018/05/11 CRDT- 2018/01/24 06:00 PHST- 2017/10/03 00:00 [received] PHST- 2018/01/11 00:00 [accepted] PHST- 2018/01/24 06:00 [pubmed] PHST- 2019/06/25 06:00 [medline] PHST- 2018/01/24 06:00 [entrez] PHST- 2018/05/11 00:00 [pmc-release] AID - ART40420 [pii] AID - 10.1002/art.40420 [doi] PST - ppublish SO - Arthritis Rheumatol. 2018 May;70(5):679-689. doi: 10.1002/art.40420. Epub 2018 Mar 31.