Tofacitinib and Baricitinib Are Taken up by Different Uptake Mechanisms Determining the Efficacy of Both Drugs in RA

Int. J. Mol. Sci. 2020; 21:6632 DOI: 10.3390/ijms21186632

Amrhein J,

Drynda S,

Schlatt L,

Karst U,

Lohmann C,

Ciarimboli G,

Bertrand J

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 cellsThe interaction of BARI and TOF with OCTs was investigated using quenching experime...

Keywords:

• JAK,
• Tofacitinib,
• Baricitinib,
• MOA

Assessment of the association of baseline anti-CarbV and anti-MCV antibodies with response to treatment and radiographic progression in an RA population treated with either methotrexate or baricitinib: post-hoc analyses from RA-BEGIN

Arthritis Res Ther. 2020;22(1):193

López-Romero P,

Martinez-Gamboa L,

Bang H,

de la Torre I,

Holzkämper T,

Feist E

Autoantibodies associated with the onset of RA have gained attention in recent years as prognostic biomarkers. Though not used diagnostically, anti-CarbV (carbamylated vimentin) and anti-MCV (vimentin modified by citrullination) baseline titers are being investigated as predictors of treatment response. In this post-hoc analysis of data from the RA-BEGIN cohort of active RA patients, López-Romero and colleagues consider the potential predictive values of baseline anti-CarbV and anti-MCV titers r...

Keywords:

• JAK,
• Baricitinib,
• Efficacy,
• Bone,
• Radiographic

Infections in Baricitinib Clinical Trials for Patients with Active Rheumatoid Arthritis

Annals of the Rheumatic Diseases, May 2020

Winthrop KL,

Harigai M,

Genovese MC,

Lindsey S,

Takeuchi T,

Fleischmann R,

Bradley JD,

Byers NL,

Hyslop DL,

Issa M,

Nishikawa A,

Rooney TP,

Witt S,

Dickson CL,

Smolen JS,

Dougados M

Baricitinib, an oral selective JAK1 and JAK2 inhibitor,8 demonstrated significant clinical efficacy in phase 3 RA trials. Pooled data from these trials, including a long-term extension (LTE), inform the safety profile for baricitinib, mainly to evaluate the incidence of infection in patients with active rheumatoid arthritis (RA), with a focus on serious infection, tuberculosis (TB), herpes zoster (HZ) and opportunistic infection (OI). The data collected were from eight double-blind randomised tr...

Keywords:

• JAK,
• Baricitinib,
• Safety,
• Infections

Efficacy and Safety of Long-Term Baricitinib With and Without Methotrexate for the Treatment of Rheumatoid Arthritis: Experience With Baricitinib Monotherapy Continuation or After Switching From Methotrexate Monotherapy or Baricitinib Plus Methotrexate.

Arthritis Care Res (Hoboken) 2020;72(8):1112-1121

Fleischmann R,

Takeuchi T,

Schiff M,

Schlichting D,

Xie L,

Issa M,

Stoykov I,

Lisse J,

Martinez-Osuna P,

Rooney T,

Zerbini CAF

This 24-week update from the baricitinib RA-BEYOND LTE study follows patients previously treated in the pivotal study RA-BEGIN. It demonstrates the maintained safety and efficacy of baricitinib monotherapy, and the effects of concurrent MTX treatment on response rates and patient reported outcomes. Previous P3 study RA-BEGIN demonstrated the superior efficacy of 4mg baricitinib compared to MTX monotherapy up to 52 weeks, with no major safety events being identified. At the end of the trial, pati...

Keywords:

• JAK,
• Baricitinib,
• Efficacy,
• Safety,
• Switching

Safety of synthetic and biological DMARDs: a systematic literature review informing the 2019 update of the EULAR recommendations for the management of rheumatoid arthritis

Annals of the Rheumatic Diseases 2020;79:760-770

Sepriano A,

Kerschbaumer A,

Smolen JS,

Van Der Heijde D,

Dougados M,

Van Vollenhoven R,

McInnes IB,

Bijlsma JW,

Burmester GR,

De Wit M,

Falzon L,

Landewé R

This SLR informed the 2019 EULAR taskforce updating recommendations for RA management. Overall, no new safety signals were reported. The known safety profile of bDMARDs was confirmed and extended to tsDMARDS. IL-6i associated lower intestinal perforation has been further confirmed, while VTE and PE concerns in JAKi treatment need further evaluation.Previous updates for the EULAR recommendations on RA pharmacological management were conducted in 2016. In this SLR safety of csDMARDs, tsDMARDs, and...

Keywords:

• Safety,
• EULAR

Temporary Interruption of Baricitinib: Characterization of Interruptions and Effect on Clinical Outcomes in Patients With Rheumatoid Arthritis

Arth Res Ther 2020;22:115 doi.org/10.1186/s13075-020-02199-8

Emery P,

Tanaka Y,

Cardillo T,

Schlichting D,

Rooney T,

Beattie S,

Helt C,

Smolen JS

This study aimed to characterize temporary interruptions of baricitinib and describe their impact on efficacy and safety. Brief interruptions during phase 3 baricitinib trials were associated with minor increases in symptoms which were resolved following treatment. In life-long, chronic conditions such as RA, interruption of therapy is common for various reasons, such as side effects, non-compliance, or because a patient requires surgery. Concerns have been raised that these treatment breaks cou...

Keywords:

• JAK,
• Baricitinib,
• Efficacy

Safety Profile of Baricitinib For the Treatment of Rheumatoid Arthritis Over a Median of 3 Years of Treatment: An Updated Integrated Safety Analysis

Lancet Rheumatol 2020;2:e347–57

Genovese MC,

Smolen JS,

Takeuchi T,

Burmester G,

Brinker D,

Rooney TP,

Zhong J,

Daojun M,

Saifan C,

Cardoso A,

Issa M,

Wu W-S,

Winthrop KL

RA is a chronic, life-long disease requiring long-term treatment. As such, it is important to understand the long-term safety profile of DMARDs. In this analysis, baricitinib maintained a stable safety profile during long-term exposure. This baricitinib safety analysis included integrated data from nine Phase 3, 2, and 1b clinical trials, and one long-term extension, with data up to 360 weeks. 3700 patients were included, with maximum follow-up of almost 7 years – representing an additional 3,54...

Keywords:

• JAK,
• Baricitinib,
• Safety

Baricitinib In Patients with Rheumatoid Arthritis With Inadequate Response to Methotrexate: Results From A Phase 3 Study

Clin Exp Rheumatol . Jul-Aug 2020;38(4):732-741. Epub 2020 May 20.

Li Z,

Hu J,

Bao C,

Li X,

Li X,

Xu J,

Spindler AJ,

Zhang X,

Xu J,

He D,

Li Z,

Wang G,

Yang Y,

Wu H,

Ji F,

Tao H,

Zhan L,

Bai F,

Rooney TP,

Zerbini CAF

This study conducted mainly in Chinese patients with RA, and an inadequate response to MTX, showed that baricitinib 4mg was associated with significant improvements and consistent with the findings from previous clinical trials.The efficacy and safety of baricitinib have been assessed in several clinical trials, predominantly in Caucasian populations. However, evidence on the efficacy and safety of baricitinib in Chinese patients is limited, with only one of the main clinical trial program studi...

Keywords:

• JAK,
• Baricitinib,
• Phase 3

Evaluation of Hepatitis B Virus in Clinical Trials of Baricitinib in Rheumatoid Arthritis

RMD Open 2020;6:e001095

Harigai M,

Winthrop K,

Takeuchi T,

Hsieh T-Y,

Chen Y-M,

Smolen JS,

Burmester G,

Walls C,

Wu W-S,

Dickson C,

Liao R,

Genovese MC

Although hepatitis B virus (HBV) reactivation was seen in patients with RA treated with DMARDs, including BARI, who had serology suggestive of prior infection, reactivation was transient even with continued BARI treatment and did not account for any clinically relevant AEs.Reactivation of HBV replication is a recognised complication in patients receiving biologic agents for RA, such as DMARDs. Limited data exist on prevalence of occult infection and the incidence of reactivation in RA patients t...

Keywords:

• JAK,
• Baricitinib,
• Safety,
• Infections

Relative Efficacy and Safety of Tofacitinib, Baricitinib, Upadacitinib, and Filgotinib in Comparison to Adalimumab in Patients with Active Rheumatoid Arthritis

Z Rheumatol. 2020 DOI: 10.1007/s00393-020-00750-1

Lee YH,

Song GG

This Bayesian network meta-analysis, comparing the relative efficacy and safety of JAK inhibitors, determined BARI 4mg + MTX and UPA 15mg + MTX were the most effective. The analysis included 5451 patients with an inadequate response to MTX and active RA, from four RCTs. Relative effects were converted into a probability allowing each treatment to be ranked. BARI and UPA had significantly higher ACR20 response rates than ADA 40mg + MTX whilst TOF 5mg and FIL 200mg had comparable ACR20 response ra...

Keywords:

• JAK,
• Baricitinib,
• Tofacitinib,
• Upadacitinib,
• Safety,
• Efficacy