Publications

JAK Inhibition as a Therapeutic Strategy for Immune and Inflammatory Diseases

Nat Rev Drug Discov 2017;16:843–62 DOI: 10.1038/nrd.2017.201

Schwartz DM,

Kanno Y,

Villarino A,

Ward M,

Gadina M,

O’Shea JJ

Janus kinases (JAKs) are essential mediators of downstream signaling pathways in many inflammatory and autoimmune diseases. This review summarizes current clinical data on first- and second-generation JAK inhibitors (jakinibs) and discusses their use for the treatment of immune and inflammatory conditions.First generation jakinibs such as tofacitinib, baricitinib, and ruxolitinib, non-selectively inhibit JAK-dependent pro-inflammatory cytokines, which are major contributors to immunopathology. T...

Keywords:

• JAK,
• Review

Successful Treatment of Arthritis Induced by Checkpoint Inhibitors with Tocilizumab: a Case Series

Ann Rheum Dis 2017;76:2061-64. doi: 10.1136/annrheumdis-2017-211560

Kim ST,

Tayar J,

Trinh VA,

Suarez-Almazor M,

Garcia S,

Hwu P,

Johnson DH,

Uemura M,

Diab A

This case series evaluated the use of tocilizumab (TCZ) as an effective treatment for patients who develop arthritis as an adverse event (AE) of immune checkpoint inhibitor (ICI) cancer treatment. Results suggested that TCZ was an effective treatment, as it reduced the arthritis disease progression.ICIs have been defined as a revolutionary treatment for metastatic melanomas; however, a common AE is the development of polyarthritis. Current arthritis treatments reduce the efficiency of ICI therap...

Tofacitinib Therapy for Rheumatoid Arthritis: A Direct Comparison Study between Biologic-naive and Experienced Patients

Intern Med. 2018 Mar 1;57(5):663-670. doi: 10.2169/internalmedicine.9341-17

Mori S,

Yoshitama T,

Ueki Y

This 6-month prospective direct comparison study analysed the effectiveness of tofacitinib (TOF) therapy on bDMARD-naïve and bDMARD-experienced patients. bDMARD-naïve patients were more responsive to TOF therapy than bDMARD-experienced patients.The study analysed the data of 113 patients diagnosed with high or moderate disease activity, defined using CDAI scores. All patients had failed to achieve CDAI low disease activity or remission with MTX therapy for ≥3 months. Patients were given 5 mg TOF...

Keywords:

• JAK,
• Tofacitinib,
• Phase 4

Tofacitinib or Adalimumab versus Placebo for Psoriatic Arthritis

N Engl J Med 2017; 377:1537-50. DOI: 10.1056/NEJMoa1615975

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

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 were used ...

Keywords:

• JAK,
• Tofacitinib,
• Phase 3

Tofacitinib for Psoriatic Arthritis in Patients with an Inadequate Response to TNF Inhibitors

N Engl J Med 2017;377:1525–36.

Gladman D,

Rigby W,

Azevedo VF,

Behrens F,

Blanco R,

Kaszuba A,

Kudlacz E,

Wang C,

Menon S,

Hendrikx T,

Kanik KS

The study data presented that tofacitinib (TOF) improves efficacy response rates in patients with severe psoriatic arthritis (PsA) who have an inadequate response to TNF inhibitors.The Phase 3 Oral Psoriatic Arthritis Trial (OPAL) Beyond study evaluated patients with active PsA who had inadequate responses to more than one TNFi. Patients were randomised 2:2:1:1 to 5 mg TOF BID or 10 mg TOF BID for 6 months; or PBO, with a switch to 5 mg TOF BID or to 10 mg BID at 3 months.Primary endpoints were ...

Keywords:

• JAK,
• Tofacitinib,
• Phase 3

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

Adv Ther. 2017 Nov;34(11):2422-2435. doi: 10.1007/s12325-017-0617-5

Chastek B,

Chieh-I Chen,

Proudfoot C,

Shinde S,

Kuznik A,

Wei W

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 swi...

Keywords:

• Cost / Cost Effectiveness

Patient-reported Outcomes of Baricitinib in Patients with Rheumatoid Arthritis and No or Limited Prior Disease-modifying Antirheumatic Drug Treatment

Arthritis Res Ther. 2017 Sep 18;19(1):208

Schiff M,

Takeuchi T,

Fleischmann R,

Gaich CL,

DeLozier AM,

Schlichting D,

Kuo W,

Won J,

Carmack T,

Rooney T,

Durez P,

Shaikh S,

Hidalgo RP,

van Vollenhoven R,

Zerbini C

RA-BEGIN was a Phase 3, double-blind randomised active comparator-controlled study to evaluate baricitinib as monotherapy or in combination with MTX in patients with active RA who were naïve to csDMARDS and bDMARDS. In this analysis of the RA-BEGIN study, baricitinib alone or with MTX when used as initial therapy resulted in significant improvements in most patient-reported outcome measures compared with MTX. At baseline, study participants had active RA, impaired physical function, moderate le...

Keywords:

• JAK,
• Baricitinib,
• PRO / QoL

Lymphoma in the Tofacitinib Rheumatoid Arthritis Clinical Development Program

Arthritis Care Res (Hoboken). 2018 May;70(5):685-694. doi: 10.1002/acr.23421

Mariette X,

Chen C,

Biswas P,

Kwok K,

Boy MG

Analysis of 19 studies involving the use of tofacitinib to treat RA showed that lymphoma incidence rate and type were consistent with expectations in the RA population as a whole, and did not increase with tofacitinib exposure time.Previous research has suggested that there is a link between the likelihood of developing malignant tumours and RA. Previously, it has been unclear whether the increased rates seen are due to the use of immunomodulatory therapies, such as tofacitinib, which are used a...

Keywords:

• JAK,
• Tofacitinib,
• Phase 2,
• Phase 3,
• Malignancy

Safety and Efficacy of Baricitinib through 128 Weeks in an Open-label, Longterm Extension Study in Patients with Rheumatoid Arthritis

J Rheumatol. 2018 Jan;45(1):14-21. doi: 10.3899/jrheum.161161

Keystone EC,

Genovese MC,

Schlichting DE,

de la Torre I,

Beattie SD,

Rooney TP,

Taylor PC

This open-label extension (OLE) of a Phase 2b randomised controlled trial (RCT) found that safety data collected over 2 years of treatment were generally consistent with previous findings for baricitinib in RA.In the RCT, baricitinib demonstrated significant improvement in disease activity compared with placebo and an acceptable safety profile in patients with RA and an inadequate response to MTX. Patients who completed the 24-week double-blind period of the study were eligible for the OLE. Rate...

Keywords:

• JAK,
• Baricitinib,
• Phase 3,
• LTE

Evaluation of Newly Proposed Remission Cut-points for Disease Activity Score in 28 Joints (DAS28) in Rheumatoid Arthritis upon IL-6 Pathway Inhibition

Arthritis Res Ther. 2017 Jul 4;19(1):155. doi: 10.1186/s13075-017-1346-5

Schoels M,

Alasti F,

Smolen JS and Aletaha D

DAS28 is not currently included in the joint remission definitions of the ACR and the EULAR because its formula is disproportionately influenced by Acute Phase Response (APR).IL-6 pathway blockers or JAK inhibitors greatly reduce APR, causing patients to be classed as in DAS28 remission despite still having multiple swollen joints.To make DAS28 remission criteria more stringent, the alternative cut-points of <1.9 and <2.2 for CRP and ESR, respectively, have been proposed.This study questioned th...