Cytokine Signalling Forum

Publications





December 18

Evaluation of the Short-, Mid-, and Long-term Effects of Tofacitinib on Lymphocytes in Patients with Rheumatoid Arthritis

van Vollenhoven R, Lee EB, Strengholt S, Mojcik C, Valdez H, Krishnaswami S, Biswas P, Lazariciu I, Hazra A, Clark JD, Hodge J, Wang L, Choy E.
Arthritis Rheumatol 2018 DOI: 10. 1002/art.40780

Tofacitinib (TOF) treatment is associated with short-term transient increases in absolute lymphocyte counts (ALC), followed by a gradual decline to reach steady state by ~48 months. Changes in both ALC and lymphocyte subset counts (LSC) were reversible upon TOF discontinuation. Low ALC but not LSC were associated with an increased risk of serious infective episodes (SIEs) and herpes zoster (HZ). This data supported the treatment recommendations on ALC counts for starting and continuing therapy w...

Keywords: JAK, Tofacitinib, Clinical, Safety

September 17

The Safety and Immunogenicity of Live Zoster Vaccination in Rheumatoid Arthritis Patients Before Starting Tofacitinib: A Randomized Phase II Trial

Winthrop KL, Wouters A, Choy E, Soma K, Hodge J, Nduaka C, Biswas P, Needle E, Passador MS, Mojcik C, Rigby W.
Arthritis Rheumatol. 2017 Oct;69(10):1969-1977. doi: 10.1002/art.40187

Patients with RA who started treatment with tofacitinib 2–3 weeks after being vaccinated against herpes zoster had similar varicella zoster virus (VZV)-specific humoral and cell-mediated responses to the live vaccine compared to patients who received placebo. In this Phase 2 study, humoral and cell-mediated immune responses were evaluated before receipt of live zoster vaccine (LZV) and at 2, 6 and 14 weeks after vaccination, having been randomised to tofacitinib 5 mg BID or placebo, 2&nda...

Keywords: JAK, Tofacitinib, Clinical, Safety

April 15

The effect of tofacitinib on pneumococcal and influenza vaccine responses in rheumatoid arthritis

Winthrop KL, Silverfield J, Racewicz A, Neal J, Lee EB, Hrycaj P, Gomez-Reino J, Soma K, Mebus C, Wilkinson B, Hodge J, Fan H, Wang T, Bingham CO 3rd.
Ann Rheum Dis. 2015 Mar 20. pii: annrheumdis-2014-207191. doi: 10.1136/annrheumdis-2014-207191. [Epub ahead of print]

The increased risk of serious infection among RA patients means vaccinations against pneumococcus and influenza are recommended in this group of patients. Studies evaluating immune response to these vaccines in conjunction with DMARD therapy can provide clinicians with important information relating to things such as timing of vaccination. This study aimed to assess the effect of tofacitinib on vaccine responses to PPSV-23 and the trivalent seasonal influenza vaccine in those whom tofacitinib...

Keywords: JAK, Tofacitinib, Clinical, Safety

December 14

The JAK inhibitor tofacitinib suppresses synovial JAK1-STAT signalling in rheumatoid arthritis

Boyle DL, Soma K, Hodge J, Kavanaugh A, Mandel D, Mease P, Shurmur R, Singhal AK, Wei N, Rosengren S, Kaplan I, Krishnaswami S, Luo Z, Bradley J, Firestein GS.
Ann Rheum Dis. 2014 Nov 14. pii: annrheumdis-2014-206028. doi: 10.1136/annrheumdis-2014-206028. [Epub ahead of print]

Targeting intracellular pathways such as JAK/STAT represents a novel approach to the treatment of RA. Tofacitinib is an oral JAK inhibitor, proven to be effective in the treatment of RA, yet the pathways affected by tofacitinib and the effects on gene expression in situ are unknown. In this study, Boyle et al. tested the hypothesis that tofacitinib targets cytokine signalling critical to the pathogenesis of rheumatoid synovitis by investigating tofacitinib effects on synovial pathobiology. A...

Keywords: JAK, Tofacitinib, Preclinical, MOA