Cytokine Signalling Forum

Publications





February 21

Sinalização JAK/STAT induzida por Citoquinas está Associada com Artrite Reumatoide e Atividade da Doença

Ptacek J, Hawtin RE, Sun D, Louie B, Evensen E, Mittleman BB, Cesano A, Cavet G, Bingham CO III, Cofield SS, Curtis JR, Danila MI, Raman C, Furie RA, Genovese MC, et al.
PLoS ONE 2021;16(1):e0244187

This analysis provides evidence that immune cell signalling pathways are important in RA. There were consistent differences between RA patients and healthy controls in IFNα, IL-6, IL-10 and GM-CSF+ IL-2 induced JAK/STAT signalling in multiple immune cell subsets. We know that RA is characterised by dysregulation of immune responses, but the exact cause is unknown. Recently, single-cell transcriptomics and mass cytometry confirmed the critical role of activated immune cells and fibroblasts...

Keywords: JAK, MOA

November 20

Ensaio Clinico de Upadacitinib ou Abatacept em Artrite Reumatoide

Rubbert‑Roth A, Enejosa J, Pangan AL, Haraoui B, Rischmueller M, Khan N, Zhang Y, Martin N, Xavier RM.
N Engl J Med 2020;383:1511–21 DOI: 10.1056/NEJMoa2008250

In patients with refractory RA to bDMARDs, upadacitinib was found to be superior to abatacept in DAS28-CRP change from baseline and the achievement of remission at week 12. 612 bDMARD-IR patients were randomised 1:1 to UPA 15 mg QD or ABA, each in combination with stable synthetic DMARDs. At Week 12, patients with <20% decrease in TJC and Swollen joint count (SJC) had background medication adjusted or added. All patients completing Week 24 were eligible to remain in an open-label, long-term ...

Keywords: JAK, Upadacitinib, Clinical, Efficacy

October 20

Tofacitinib e Baricitinib são Capturados por Diferentes Mecanismos de Celulares Determinando a Eficácia de Ambos os Fármacos em AR

Amrhein J, Drynda S, Schlatt L, Karst U, Lohmann C, Ciarimboli G, Bertrand J.
Int. J. Mol. Sci. 2020; 21:6632 DOI: 10.3390/ijms21186632

Amrhein et al examined the different uptake and expulsion mechanisms of BARI and TOF in cellular assays. Different cellular uptake mechanism for BARI and TOF was observed and showed that BARI’s transport was not dependent on organic cation transporters. Results indicated TOF was exported from RASF in a MATE-1 dependent way. TOF might be exported from healthy cells, thereby not inhibiting JAK pathway in these cells The interaction of BARI and TOF with OCTs was investigated using quenching ...

Keywords: JAK, Tofacitinib, Preclinical, MOA

Translated by: Igor Kos

February 20

Filgotinib, um Inibidor JAK1, Modula Biomarcadores Relacionados com a Doença na Artrite Reumatoide: Resultados de 2 Estudos Randomizados, Controlados de Fase 2

Tarrant JM, Galien R, Wanying L, Goyal L, Pan Y, Hawtin R, Zhang W, Van der Aa A and Taylor PC.
Rheumatol Ther. 2020 DOI: 10.1007/s40744-019-00192-5

In this study examining the effect of FIL on a panel of biomarkers, FIL down-modulated several key inflammatory mediators of signalling pathways in RA - independent of MTX background therapy. This confirmed the strong network effects of the JAK1 node in autoimmunity, matrix and cartilage degradation, angiogenesis, and leukocyte adhesion and recruitment. Biomarkers key to RA pathophysiology were measured at baseline, Wk4 and Wk12 in FIL 100 mg, FIL 200 mg or PBO treatment groups from two phase ...

Keywords: JAK, Filgotinib, Clinical, Phase 2

Translated by: Igor Koz

Inhibition Préférentielle de JAK1 Par Rapport à JAK3 par l'Upadacitinib : Analyses Exposition-Réponse des Données Ex Vivo de 2 Essais Cliniques de Phase 1 et Comparaison Avec le Tofacitinib

Mohamed MF, Beck D, Camp HS, Othman AA.
Pharmacodynamics. 2020

Ex vivo pharmacodynamic assay results demonstrated a greater selectivity of UPA on JAK1 versus JAK3 compared to TOF. This analysis conducted ex vivo stimulation of STAT3 phosphorylation by IL-6 as a measure of JAK1 activity and STAT5 phosphorylation by IL-7 as a measure of JAK1/JAK3 activity. Change in pSTAT3 and pSTAT5 were calculated at 1, 6 and 12 hours following drug administration using samples collected from healthy subjects and subjects with RA, from 2 phase 1 studies. Exposure-response...

Keywords: JAK, Upadacitinib, Preclinical, MOA

Translated by: Igor Kos

November 17

Tofacitinib or Adalimumab versus Placebo for Psoriatic Arthritis

Mease P, Hall S, FitzGerald O, van der Heijde D, Merola J F, Avila-Zapata F, Cieslak D, Graham D, Wang C, Menon S, Hendrikx T, Kanik K S.
N Engl J Med 2017; 377:1537-50. DOI: 10.1056/NEJMoa1615975

In the Phase 3 OPAL Broaden trial of patients with active psoriatic arthritis (PsA) with inadequate response to ≥1 csDMARD, superior efficacy was observed in patients treated with tofacitinib (TOF) compared with those given placebo. Patients were randomised to: 5 mg TOF BID, 10 mg TOF BID, 40 mg adalimumab administered subcutaneously q2W, or placebo with a switch to 5 mg TOF at Month 3. Adalimumab was used as an active control in the study. A variety of primary and secondary endpoints wer...

Treatment Persistence and Healthcare Costs Among Patients with Rheumatoid Arthritis Changing Biologics in the USA

Chastek B, Chieh-I Chen, Proudfoot C, Shinde S, Kuznik A, Wei W.
Adv Ther. 2017 Nov;34(11):2422-2435. doi: 10.1007/s12325-017-0617-5

Updated treatment guidelines recommend the use of different mechanism of action (MOA) therapies earlier in the treatment course. Clinical studies have revealed that this approach may be better than TNFi cycling, and may be more cost effective. This study of Commercial and Medicare Advantage claims data showed that patients who switched MOA had higher treatment persistence and lower healthcare costs than TNFi cyclers. After the first TNFi claim, patients either cycled to another TNFi (n=935) or...

August 17

Treatment Persistence and Clinical Outcomes of Tumor Necrosis Factor Inhibitor Cycling or Switching to a New Mechanism of Action Therapy: Real-world Observational Study of Rheumatoid Arthritis Patients in the United States with Prior Tumor Necrosis Factor Inhibitor Therapy

Wei W, Knapp K, Wang L, Chen C-I, Craig GL, Ferguson K Schwartzman S.
Adv Ther. 2017 Aug;34(8):1936-1952. doi: 10.1007/s12325-017-0578-8

This retrospective, observational study used a real-world US clinical database to demonstrate greater effectiveness of switching to a therapy with an alternative mechanism of action (MOA) vs cycling between TNF inhibitors (TNFis) in patients in which TNFi therapy has failed. Between 1 April 2010 and 31 March 2015, a total of 613 of the observed patients failed a TNFi therapy and then either cycled to another TNFi therapy (54.2%) or switched to a therapy with an alternative MOA (45.8%). The most...

June 17

Outcomes of Tumor Necrosis Factor Inhibitor Cycling versus Switching to a Disease-modifying Anti-rheumatic Drug with a New Mechanism of Action Among Patients with Rheumatoid Arthritis

Chastek B, Becker LK, Chen CI, Mahajan P and Curtis JR.
J Med Econ 2017;20:464–73

This retrospective study looked at claims-based datasets to establish whether it is preferable to switch to another TNF inhibitor (TNFi) or to a therapy with a different mechanism of action (MOA) when RA treatment failure occurs with an initial TNFi, due to inadequate response or lack of tolerability. Administrative claims data from a large US database were used to compare treatment patterns, treatment effectiveness (based on fulfillment of six criteria) and costs in in the 12 months after RA p...

May 16

Baricitinib in Patients with Refractory Rheumatoid Arthritis

Genovese et al.
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...

December 15

Incidence and complications of interstitial lung disease in users of tocilizumab, rituximab, abatacept and anti-tumor necrosis factor α agents, a retrospective cohort study

Curtis JR, Sarsour K, Napalkov P, Costa LA, and Schulman KL.
Arthritis Research & Therapy (2015) 17:319 DOI: 10.1186/s13075-015-0835-7

Interstitial lung disease (ILD) is a common extra-articular condition for RA patients. This retrospective cohort study of health insurance databases investigates the ILD incidence and exacerbation between ABA, TCZ, RTX, and anti-TNFα agents in adult RA patients with prior biologic therapy. Two definitions of ILD were used: one specific, one sensitive; descriptive results were produced for both. In patients with no history of ILD, the overall incidence rate of ILD ranged from 1.8% to 6.4%...