November 2021

A review of JAK-STAT signalling in the pathogenesis of spondyloarthritis and the role of JAK inhibition

Rheumatology (Oxford). 2021. Epub ahead of print. doi: 10.1093/rheumatology/keab740.

JAK inhibitors are likely to become an important part of the overall treatment paradigm for spondyloarthritis (SpA).Although not fully understood, the pathogenesis of SpA is complex and thought to involve both environmental and genetic factors that together elicit a chronic inflammatory response involving the innate and adaptive immune systems. Several different cytokines, TNF, IL-17A, IL-12/23 and IL-23, which are directly/indirectly affected by JAK molecules, are involved in the pathogenesis o...

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October 2021

Radiographic progression of structural joint damage over 5 years of baricitinib treatment in patients with rheumatoid arthritis: Results from RA-BEYOND

J Rheumatol. 2021 Sep 15:jrheum.210346.

Oral baricitinib maintained lower levels of radiographic progression than initial csDMARD or placebo through 5 years in patients with active RA.It is well known that persistent joint inflammation in RA can lead to irreversible structural damage that impacts on patient physical function and quality-of-life. To this end, van der Heijde, et al. evaluated the effect of baricitinib on inhibiting radiographic progression of structural joint damage over 5 years in patients with active RA. Results from ...

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Efficacy and safety of tofacitinib versus baricitinib in patients with rheumatoid arthritis in real clinical practice: analyses with propensity score-based inverse probability of treatment weighting

Ann Rheum Dis. 2021;80(9):1130-1136

Propensity score-based inverse probability of treatment weighting shows that efficacy may differ between tofacitinib and baricitinib. Miyazaki, et al. compared the efficacy and safety of the two JAK inhibitors in real-world clinical practice, after reduction to a minimum of the selection bias, using propensity score-based inverse probability of treatment weighting, and adjustment for confounding patient characteristics. They found that tofacitinib may be less effective in patients resistant to m...

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Reactivation of hepatitis B virus infection in patients with rheumatoid arthritis receiving tofacitinib

Int J Rheum Dis. 2021. Epub ahead of print

Tofacitinib could induce Hepatitis B virus (HBV) reactivation in RA patients.With previous studies having already demonstrated that RA patients using biologic agents, might experience HBV reactivation leading to acute hepatitis, hyperbilirubinemia, and death, Wang, et al. aimed to investigate HBV reactivation in patients with RA receiving tofacitinib. They found that Hepatitis B surface antigen positive patients receiving tofacitinib have a high incidence rate of HBV reactivation, which could be...

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Risk of herpes zoster (shingles) in patients with rheumatoid arthritis under biologic, targeted synthetic and conventional synthetic DMARD treatment: data from the German RABBIT register

Ann Rheum Dis. 2021 Jul 28:annrheumdis-2021-220651

A 3.6-fold increased risk of herpes zoster (HZ) is associated with tsDMARDs, and an increased risk is associated with bDMARDs, compared with csDMARDs. It is now well known that patients with RA have an increased risk of developing herpes zoster (HZ), and that incidence rates appear to be increased with TNF and JAK inhibitors. To this end, Redeker, et al. used data from the German RABBIT Registry to compare event and incidence rates of HZ in patients with RA treated with the three different DMAR...

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September 2021

Efficacy and safety of filgotinib in methotrexate-naive patients with rheumatoid arthritis with poor prognostic factors: post hoc analysis of FINCH 3

RMD Open. 2021;7(2):e001621.

Post hoc analysis of the phase III FINCH study shows that filgotinib may be an alternative treatment option for patients with RA who have poor prognostic factors (PPFs), especially those not responding to standard treatment such as methotrexate (MTX).PPFs are associated with severe disease and risk for disease progression in patients with RA. Consequently, the 2019 EULAR management guidelines for RA recommend early treatment escalation for patients with PPFs who have inadequate response to first...

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August 2021

Contribution of a European-Prevalent Variant Near CD83 and an East Asian-Prevalent Variant Near IL17RB to Herpes Zoster Risk in Tofacitinib Treatment: Results of Genome-Wide Association Study Meta-Analyses

Arthritis Rheumatol. 2021;73(7):1155–66

Genetic analysis of tofacitinib-treated subjects with RA or PsO identified multiple loci associated with increased herpes zoster (HZ) risk.It is well known that HZ risk is elevated in subjects with RA compared with the general population, and that treatment with JAK inhibitors may result in increased risks compared with TNFi and other bDMARD treatments. To this end, Bing, et al. used genome-wide association studies to identify genetic factors associated with an increased risk/faster onset of HZ ...

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Real-World Comparative Effectiveness and Safety of Tofacitinib and Baricitinib in Patients With Rheumatoid Arthritis

Arthritis Res Ther. 2021;23(1):197

In a real-world setting, tofacitinib and baricitinib have comparable continuing efficacies and safety profiles in patients with RA.It is important to determine the differences and similarities of JAK inhibitors in a real-world setting so that the optimal agent can be administered. However, until now, no published data of a direct comparison among these agents in RA have been available. With this in mind, Iwamoto, et al. compared the efficacy and safety of tofacitinib with those of baricitinib by...

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Upadacitinib Monotherapy Improves Patient-Reported Outcomes in Rheumatoid Arthritis: Results From SELECT-EARLY and SELECT-MONOTHERAPY

Rheumatology (Oxford). 2021;60(7):3209–21

Upadacitinib treatment results in statistically significant and clinically meaningful improvements in health-related quality of life.Strand, et al. evaluated the effect of upadacitinib monotherapy versus methotrexate (MTX) on patient-reported outcomes (PRO) in MTX-naïve and MTX-inadequate responder patients with moderately-to-severely active RA. Their research from the SELECT-EARLY and SELECT-MONOTHERAPY randomised controlled trials found that upadacitinib monotherapy resulted in clinically mean...

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Median Time to Pain Improvement and the Impact of Baseline Pain Severity on Pain Response in Patients with Psoriatic Arthritis Treated with Tofacitinib

RMD Open. 2021;7(2):e001609.

Tofacitinib 5 mg twice daily provides clinically meaningful improvements in pain for patients with PsA.Reducing pain is a primary treatment concern for patients with PsA. As such, de Vlam, et al. set out to evaluate the time to pain improvement and the impact of baseline pain severity on pain response in patients with PsA receiving tofacitinib.Using data from the OPAL Broaden and OPAL Beyond trials, they discovered that clinically important improvements in pain were experienced by more patients,...

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