PMID- 31025924 OWN - NLM STAT- MEDLINE DCOM- 20200717 LR - 20200717 IS - 0392-856X (Print) IS - 0392-856X (Linking) VI - 38 IP - 1 DP - 2020 Jan-Feb TI - Primary efficacy of netakimab, a novel interleukin-17 inhibitor, in the treatment of active ankylosing spondylitis in adults. PG - 27-34 AB - OBJECTIVES: Netakimab (NTK) is a humanised monoclonal antibody targeting interleukin-17A, previously investigated in a phase 1 trial in healthy volunteers. Here, we report the results of a phase 2 trial, conducted to assess safety and pharmacokinetics (PK), to establish a therapeutic dose of NTK in a target population of patients with active ankylosing spondylitis (AS). METHODS: 89 patients with active AS, despite non-steroidal anti-inflammatory (NSAID) drug treatment, were randomised to receive 40, 80 or 120 mg of subcutaneous NTK or placebo at weeks 0, 1, 2 and q2wk thereafter until week 12. The primary endpoint was to achieve a proportion of patients with >/=20% improvement in Assessment of Spondyloarthritis. RESULTS: Rates of ASAS20 response at week 16 for NTK with 95%CI for difference in ASAS20 rates NTK vs. placebo were 72.73% [1.69%;58.05%], 81.82% [12.36%;65.56%], 90.91% [23.71%;72.39%] at doses of 40, 80 and 120 mg. The response rate in the placebo arm was 42.86%. The pre-specified margin of clinically non-meaningful difference was 10%. Superiority to placebo was confirmed for doses 80 and 120 mg. The most frequent adverse events (AEs) were lymphocytosis, neutropenia, and asymptomatic bacteriuria. No dose-dependent toxicity or serious adverse events (SAEs) were observed. The most effective dose with the fastest response onset and favourable safety profile was 120 mg. CONCLUSIONS: The data obtained demonstrate the efficacy and favourable safety profile of NTK in active AS. Clinical development of NTK will be continued in a phase 3 trial aimed to evaluate the efficacy of 1-year treatment with NTK 120 mg in patients with AS. FAU - Erdes, Shandor AU - Erdes S AD - Nasonova Research Institute of Rheumatology, Moscow, Russia. FAU - Nasonov, Evgeny AU - Nasonov E AD - Nasonova Research Institute of Rheumatology, Moscow, Russia. FAU - Kunder, Elena AU - Kunder E AD - Academy for Postgraduate Education, Minsk, Belarus. FAU - Pristrom, Andrey AU - Pristrom A AD - Academy for Postgraduate Education, Minsk, Belarus. FAU - Soroka, Nikolay AU - Soroka N AD - Belarus State Medical University, Minsk, Belarus. FAU - Shesternya, Pavel AU - Shesternya P AD - Krasnoyarsk State Medical University, Krasnoyarsk, Russia. FAU - Dubinina, Tatiana AU - Dubinina T AD - Nasonova Research Institute of Rheumatology, Moscow, Russia. FAU - Smakotina, Svetlana AU - Smakotina S AD - Regional Clinical Hospital, Kemerovo, Russia. FAU - Raskina, Tatiana AU - Raskina T AD - Kemerovo State Medical University, Kemerovo, Russia. FAU - Krechikova, Diana AU - Krechikova D AD - Regional Clinical Hospital, Smolensk, Russia. FAU - Povarova, Tatiana AU - Povarova T AD - Road Clinical Hospital, Saratov, Russia. FAU - Plaksina, Tatiana AU - Plaksina T AD - Clinical Hospital, Nizhniy Novgorod, Russia. FAU - Gordeev, Ivan AU - Gordeev I AD - City Clinical Hospital No. 15, Moscow, Russia. FAU - Mazurov, Vadim AU - Mazurov V AD - North-Western State Medical University, St. Petersburg, Russia. FAU - Reshetko, Olga AU - Reshetko O AD - Regional Clinical Hospital, Saratov, Russia. FAU - Zonova, Elena AU - Zonova E AD - Municipal Clinical Inpatient Facility No. 1, Novosibirsk, Russia. FAU - Eremeeva, Anna AU - Eremeeva A AD - JSC BIOCAD, St. Petersburg, Russia. eremeevaav@biocad.ru. FAU - Chernyaeva, Ekaterina AU - Chernyaeva E AD - JSC BIOCAD, St. Petersburg, Russia. FAU - Makulova, Tatiana AU - Makulova T AD - Institute for Medical Research, St. Petersburg, Russia. FAU - Ivanov, Roman AU - Ivanov R AD - JSC BIOCAD, St. Petersburg, Russia. LA - eng PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial DEP - 20190416 PL - Italy TA - Clin Exp Rheumatol JT - Clinical and experimental rheumatology JID - 8308521 RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Interleukin-17) SB - IM MH - Adult MH - Antibodies, Monoclonal, Humanized/*therapeutic use MH - Double-Blind Method MH - Humans MH - Interleukin-17/*antagonists & inhibitors MH - Spondylitis, Ankylosing/*therapy MH - Treatment Outcome EDAT- 2019/04/27 06:00 MHDA- 2020/07/18 06:00 CRDT- 2019/04/27 06:00 PHST- 2018/10/15 00:00 [received] PHST- 2019/02/25 00:00 [accepted] PHST- 2019/04/27 06:00 [pubmed] PHST- 2020/07/18 06:00 [medline] PHST- 2019/04/27 06:00 [entrez] AID - 13535 [pii] PST - ppublish SO - Clin Exp Rheumatol. 2020 Jan-Feb;38(1):27-34. Epub 2019 Apr 16.