July 2016

Switching from Adalimumab to Tofacitinib in the Treatment of Patients with Rheumatoid Arthritis

Arthritis Research & Therapy. 2016. DOI 10.1186/s13075-016-1049-3 [Epub ahead of print]

Results are reported from an analysis exploring the safety and efficacy of open-label tofacitinib (TOF) following blinded treatment with TOF or adalimumab (ADA) in patients with moderate to severe RA. The analysis included patients from ORAL Sequel, an open-label long-term extension study, which all patients entered following ORAL Standard (one of the studies in the TOF phase 3 program). Only those patients who had been randomized to ADA 40 mg Q2W + MTX or 10 mg TOF + MTX in ORAL Standard were i...

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Efficacy and safety of the oral Janus kinase inhibitor peficitinib (ASP015K) monotherapy in patients with moderate to severe rheumatoid arthritis in Japan:a 12-week, randomised, double-blind, placebo-controlled phase IIb study

Ann Rheum Dis. 2016 Jun;75:1057-64. doi: 10.1136/annrheumdis-2015-208279. Epub 2015 Dec 15

Peficitinib (ASP015K) is a novel orally bioavailable JAK inhibitor in development for the treatment of RA. It inhibits JAK1, JAK2, JAK3 and Tyk2 enzyme activities and has moderate selectivity or JAK3 inhibition.Here the authors report the findings of a 12-week, randomized, double-blind, placebo-controlled phase IIb study evaluating efficacy, safety and dose response of peficitinib (25, 50, 100, or 150 mg) as once-daily oral monotherapy in Japanese patients with moderate to severe RA. The primar...

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Biologics or Tofacitinib for Rheumatoid Arthritis in Incomplete Responders to Methotrexate or Other Traditional Disease-Modifying Anti-Rheumatic Drugs: A Systematic Review and Network Meta-Analysis

Cochrane Database of Systematic Reviews 2016 Issue 5. Art. No.: CD012183 [DOI: 10.1002/14651858.CD012183].

Treatment options for RA patients who are MTX/DMARD incomplete responders (IR) include other DMARDs, biologics or tofacitinib (TOF). However, there is a lack of head-to-head studies to show any important differences between these options in terms of benefits and harms. This review provides an update of the 2009 Cochrane overview and network meta-analysis (NMA) of biologics for RA.1Nine biologics (abatacept, adalimumab, anakinra, certolizumab pegol, etanercept, golimumab, infliximab, rituximab, a...

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Risk for Gastrointestinal Perforation Among Rheumatoid Arthritis Patients Receiving Tofacitinib, Tocilizumab, or Other Biologics

Arthritis Rheumatol. 2016 May 17. DOI 10.1002/art.39761 [Epub ahead of print]

Historically, patients with RA have suffered with upper tract gastrointestinal perforation (GIPs), associated with NSAID use. More recently, the IL-6 receptor antagonist tocilizumab (TCZ) has been associated with lower tract GIPs. Janus kinase (JAK) inhibitors, including tofacitinib (TOF), with some downstream effects on IL-6 signalling, also have potential for an increased risk of GIPs.There is limited real-world evidence and almost no comparative evidence on the risk for GIP associated with TC...

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Two-year Efficacy of Tocilizumab in Patients with Active Rheumatoid Arthritis in Clinical Practice

Reumatol Clin. 2016; May 10 doi: 10.1016/j.reuma.2016.03.014 [Epub ahead of print]

The efficacy and safety of tocilizumab has been studied in several randomized clinical trials (RCTs) but due to the strict inclusion and exclusion criteria of RCTs, real-life observational studies are needed to supplement the findings from these trials. This small longitudinal, open-label study from an outpatient clinic in Spain evaluated the effectiveness, survival rate and reasons for treatment discontinuations in 85 patients treated with tocilizumab over a 24-month period. The study also ass...

Efficacy and Safety of Baricitinib in Japanese Patients with Active Rheumatoid Arthritis Receiving Background Methotrexate Therapy: A 12-week, Double-blind, Randomized Placebo-controlled Study

J Rheumatol. 2016;43(3):504–511.

Clinical trials have shown baricitinib once daily to be effective in patients with RA. However, this Janus kinase (JAK) 1/JAK2 inhibitor has not been evaluated in a Japanese population. In this 12-week, placebo-controlled study, 145 Japanese patients were enrolled and received placebo, 1 mg, 2 mg, 4 mg or 8 mg oral baricitinib daily. Efficacy results were encouraging and consistent with earlier trials. Significantly more baricitinib patients achieved ACR20 response at Week 12 of treatment compar...

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May 2016

The Efficacy and Safety of Clazakizumab, an Anti-Interleukin-6 Monoclonal Antibody, in a Phase 2b Study of Adults with Active Psoriatic Arthritis

Arthritis Rheumatol. 2016 Mar 24. DOI 10.1002/art.39700 [Epub ahead of print]

Encouraging results have been seen with clazakizumab in RA, but the results of anti-IL6 therapy in patients with psoriatic arthritis (PsA) have so far been unclear. This Phase 2b dose-ranging study examined the efficacy and safety of clazakizumab given subcutaneously q4w, with or without MTX, in 165 patients with PsA who had inadequate response to NSAIDs.ACR20 response at Week 16, the primary endpoint, was significantly higher in patients receiving clazakizumab 100 mg compared with placebo (52.4...

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Initial Experience with Tofacitinib in Clinical Practice: Treatment Patterns and Costs of Tofacitinib Administered as Monotherapy or in Combination with Conventional Synthetic DMARDs in 2 US Health Care Claims Databases

Clin Ther. 2016 Mar 28. doi: 10.1116/j.clinthera. 2016.03.038 [Epub ahead of print]

This study analyzes data from two US claims databases between November 2012 and June 2014. It was designed to build upon knowledge from tofacitinib Phase 3 clinical trials providing clinical insights from independent sources on treatment patterns and costs for tofacitinib. Data were collected from 337 patients in the Truven Marketscan (TM) and 118 patients in the Optum Clinformatics (OC) databases. In this early experience cohort for tofacitinib, approximately 75% of patients had previously rece...

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Real-world Comparative Risks of Herpes Virus Infections in Tofacitinib and Biologic-treated Patients with Rheumatoid Arthritis

Ann Rheum Dis. 2016 Apr 25;0:1–5 doi: 10.1136/annrheumdis-2016-209131

Herpes Zoster (HZ) complications can cause considerable morbidity including debilitating pain syndromes. Clinical trials of tofacitinib have suggested it may increase the risk of HZ. Although unclear, the mechanism may involve reduced CD4 T-cell function and interference of interferon signalling. Following approval of tofacitinib in the US in 2012, real-world data from Medicare (2006–2013) and from the US longitudinal database, Marketscan, (2010–2014) were analysed. A total of 2526 patients who...

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Extended-release once-daily formulation of tofacitinib: evaluation of pharmacokinetics compared with immediate-release tofacitinib and impact of food

J Clin Pharmacol. 2016 Mar 11. doi: 10.1002/jcph.734. [Epub ahead of print]

PK profile of TOF is rapid absorption and elimination with time to max concentration 0.5-1 hour and terminal half-life at 3 hours. It is currently approved for immediate release (IR) 5 mg BID, 10 mg total; however, decreasing the dosage to QD dosing may help increase compliance. This study performed in 24 healthy males compared the PK of XR and IR TOF under both single and multiple dose conditions and evaluated the effect of a high-fat meal on the PK of XR TOF. There were no clinically important...

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