View and download slide summaries of the latest original articles focusing on therapies in immune-mediated inflammatory diseases including rheumatology, dermatology, and gastroenterology. All materials produced by the team are subsequently reviewed and approved by individual Steering Committee members.
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...
Filgotinib (GLPG0634) is a selective inhibitor of JAK1 currently in development for the treatment of RA and Crohn’s disease. This paper describes the pharmacokinetics of filgotinib and its active metabolite, as well as the PK/PD modelling to support dose selection for phase IIB.
Two phase I, randomised, double-blind, placebo-controlled trials in healthy volunteers and one phase IIa proof-of-concept study in RA patients were used to evaluate single and multiple doses of filgotinib.
Recent innovations in the treatment of RA have focused on the use of small molecules to inhibit intracellular kinases such as the JAK family. Baricitinib (LY3009104, formerly INCB028050) is an orally administered, potent, selective and reversible inhibitor of JAK1 and JAK2, which has shown anti-inflammatory effects, as well as preservation of cartilage and bone, in preclinical rodent studies.
This phase IIb study was designed to investigate multiple doses and dosing regimens of baricitin...
The PK of tofacitinib has previously been described in several papers covering a range of diseases. This current study was used to better understand the PK, metabolism and clearance mechanisms of tofacitinib in healthy human subjects. Six subjects took a single 50mg dose of 14C-tofacitinib orally and consequently had urine, faeces and plasma collected. These were assayed for radioactivity and profiled for metabolites. Tofacitinib was found to be rapidly absorbed, with peak plasma concentrations ...
Preclinical studies can provide insight into mechanisms of efficacy and optimal dosing regimens. In this study, Dowty et al. compare the pharmacokinetic / pharmacodynamic profiles of tofacitinib in a murine arthritis model and in patients with rheumatoid arthritis from tofacitinib clinical trials. The main driver of efficacy in both preclinical murine arthritis models and clinical RA was found to be inhibition of JAK1 heterodimer signalling, where total drug exposure (Cave) was a predictor of pr...
Fostamatinib (R778) is a prodrug designed to deliver the active metabolite R406 which is an inhibitor of SYK and is currently under investigation for treatment of RA. The three clinical trials, conducted in healthy subjects, included two ascending dose studies and a formulation study. The first was a single ascending dose of R406, from 80-600mg, the second was a single and multiple dose study of fostamatinib in aqueous solution with single doses from 80-400mg and multiple doses of 160mg twice da...
