Publications

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

Arthritis Rheumatol 2018 DOI: 10. 1002/art.40780

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

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,
• MOA

Romatoid Artrit Hastalarında Herpes Zoster ve Tofacitinib Tedavisi

Arthritis Rheumatol 2014;66:2675–84

Winthrop KL,

Yamanaka H,

Valdez H,

Mortensen E,

Chew R,

Krishnaswami S,

Kawabata T,

Riese R

Patients who were treated with tofacitinib in the RA clinical development programme were more likely to develop herpes zoster than were those who received placebo.Cases of herpes zoster reported by investigators in the Phase 2, Phase 3 and long-term extension studies of tofacitinib were evaluated. Herpes zoster was noted in 5% of tofacitinib-treated patients; only 7% of these cases were serious, no patients with herpes zoster died and only 10% permanently discontinued tofacitinib treatment.The o...

Keywords:

• JAK,
• Tofacitinib,
• Infections

Romatoid Artrit Hastalarında Tofasitinib Monoterapisinin, Metotreksat ile Tofasitinibin ve Metotreksat ile Adalimumab Kombinasyonunun Etkinliği ve Güvenliği (ORAL Strategy): Faz 3b/4, Çift Kör, Kafa-kafaya, Randomize Kontrollü Bir Çalışma

Lancet. 2017 Jul 29;390(10093):457-468. doi: 10.1016/S0140-6736(17)31618-5

Fleischmann R,

Mysler E,

Hall S,

Kivitz A,

Moots R,

Luo Z,

DeMasi R,

Soma K,

Zhang R,

Takiya L,

Tatulych S,

Mojcik C,

Krishnaswami S,

Menon S,

Smolen J,

on behalf of the ORAL Strategy investigators

In this first head-to-head non-inferiority trial assessing a JAKi ± MTX directly compared with a TNFi + MTX in patients with RA, tofacitinib (TOF) + MTX showed non-inferiority to adalimumab (ADA) + MTX. Non-inferiority was not shown for TOF monotherapy versus TOF + MTX, or versus ADA + MTX.In this 52-week study, MTX-inadequate responder (IR) patients were randomised 1:1:1 to receive TOF 5 mg BID monotherapy, TOF 5 mg BID + MTX or ADA 40 mg every other week + MTX. The primary endpoint, ACR50 resp...

Keywords:

• JAK,
• Tofacitinib,
• Phase 4,
• Phase 3

Aktif Romatoid Artrit Hastalarında Tofasitinib ve Konvansiyonel DMARD Kombinasyonu: Randomize Kontrollü Faz 3 Çalışma

Arthritis Care Res 2016; Accepted article. DOI 10.1002/acr.23004

Strand V,

Kremer JM,

Gruben D,

Krishnaswami S,

Zwillich SH,

Wallenstein GV

Further evidence is presented that treatment with tofacitinib improves patient-reported outcomes (PROs), in addition to improving underlying disease activity.Data were analysed from the Phase 3 ORAL Sync 12-month randomised controlled trial in adult patients with active RA and previous inadequate response to ≥1 conventional or biologic DMARD(s). Patients received (4:4:1:1) TOF 5mg or 10mg BID or Placebo advanced to 5 mg or10 mg BID plus conventional DMARD(s).PROs assessed at Month 3 were: Patien...

Keywords:

• JAK,
• Tofacitinib,
• Phase 3,
• PRO / QoL

Romatoid Artrit Klinik Çalışmalarında Tofasitinib ve Biyolojik DMARD Tedavisi ile Gözlenen Ciddi Infeksiyonların Sistematik Derleme ve Metaanalizi

Arthritis Res Ther. 2015 Dec 15;17(1):362

Strand V,

Ahadieh S,

French J,

Geier J,

Krishnaswami S,

Menon S,

Checchio T,

Tensfeldt TG,

Hoffman E,

Riese R,

Boy M,

Gomez-Reino JJ

Tofacitinib is an oral Janus kinase inhibitor for the treatment of RA. By modulating the signalling of cytokines that are integral to lymphocyte activation, proliferation, and function, tofacitinib may suppress multiple elements of immune response. A systematic literature search including all biologics and tofacitinib procured 66 RCTs and 22 LTEs that were included in a meta-analysis to provide estimated incidence rates, risk ratios, and risk differences of serious infection for each therapy. Es...

Keywords:

• JAK,
• Tofacitinib,
• Safety,
• Meta Analysis,
• Infections

JAK inhibitörü tofacitinib romatoid artritte sinovyal JAK1-STAT sinyalizasyonunu baskılar

Ann Rheum Dis. 2014 Nov 14. pii: annrheumdis-2014-206028. doi: 10.1136/annrheumdis-2014-206028. [Epub ahead of print]

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

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.

Keywords:

• JAK,
• Tofacitinib,
• Phase 1,
• MOA

Tofacitinib ile tedavi edilen aktif romatoid artritli hastalarda serum kreatinin düzeylerinde değişiklikler: klinik çalışmalardan elde edilen sonuçlar

Arthritis Res Ther. 2014;16(4):R158

Isaacs JD,

Zuckerman A,

Krishnaswami S,

et al.

Despite preclinical and healthy volunteer studies of tofacitinib showing no evidence of nephrotoxicity, increases in mean serum creatinine levels have been observed in patients treated with the drug during the RA clinical development programme. This report explores the clinical significance of this change.

Serum creatinine values and renal adverse event data were pooled from patients who received =1 dose of tofacitinib either with background DMARDs or as monotherapy in five Phase 3 studie...

Keywords:

• JAK,
• Tofacitinib,
• Safety,
• Renal

Inhibition of JAK kinases in patients with rheumatoid arthritis: scientific rationale and clinical outcomes

Best Practice & Research Clinical Rheumatology 2010; 24:513-26

Riese RH,

Krishnaswami S,

Kremer J

This article reviews data from animal and phase 2 clinical studies assessing the immunomodulatory effects and pharmacokinetics of CP-690,550 (now known as tofacitinib), as well as its efficacy and safety in patients with rheumatoid arthritis (RA). In two rodent models of arthritis, CP-690,550 produced dose-dependent decreases in signs of disease activity compared with untreated controls, reductions in histologically assessed inflammation and articular cartilage damage, and statistically signific...

Keywords:

• JAK,
• MOA,
• Review