July 2016

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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June 2016

Phase 3 trials of ixekizumab in moderate-to-severe plaque psoriasis

N Engl J Med 2016;375:345–56. doi: 10.1056/NEJMoa1512711

Gordon, et al. pool the results of UNCOVER-1, UNCOVER-2, and UNCOVER-3 to show that ixekizumab increases the proportion of patients achieving an sPGA score of 0/1 or PASI 75 versus placebo. Adverse events related to ixekizumab treatment included neutropenia, candidal infections, and inflammatory bowel disease.

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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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Baricitinib in Patients with Refractory Rheumatoid Arthritis

N Engl J Med. 2016 Mar 31;374(13):1243-52. doi: 10.1056/NEJMoa1507247

For patients who have an inadequate response or unacceptable side effects associated with biologic DMARDs, the options for treatment beyond conventional DMARDs are limited. This phase 3 trial of the JAK 1/2 inhibitor, baricitinib, studied its efficacy in bDMARD-IR patients. 527 patients were randomized to either baricitinib 2mg, 4mg or placebo for up to 24 weeks. At week 12 the primary endpoints were tested hierarchically to control type 1 error; these endpoints were ACR20, HAQ-DI score, DAS28-C...

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Effects of Tofacitinib and other DMARDs on Lipid Profiles in Rheumatoid Arthritis: Implications for the Rheumatologist

Semin Arthritis Rheum 2016;46:71–80

Increased inflammation and CV disease have been associated with lower total cholesterol (TC) and low density lipoprotein (LDL-C) levels in RA patients – an apparent paradox to what is observed in the general population. Previously, reduced high-density lipoprotein (HDL-C) levels have been associated with increased risk of CV, and an inverse relationship observed with levels of HDL-C level and C-reactive protein (CRP).This analysis of the literature with regard to studies using DMARDs in RA patie...

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