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Abstract Number: 1647

Tofacitinib, an Oral Janus Kinase Inhibitor, in the Treatment of Rheumatoid Arthritis: Safety and Efficacy in Open-Label, Long-Term Extension Studies over 8 Years

Jürgen Wollenhaupt1, Joel Silverfield2, Eun Bong Lee3, Ketti Terry4, Kenneth Kwok5, Staci Abramsky5, Min Wang5, Chudy Nduaka6, Ryan DeMasi5 and Lisy Wang4, 1Schoen-Klinik Hamburg-Eilbek Teaching Hospital of the University of Hamburg, Hamburg, Germany, 2Healthpoint Medical Group, Tampa, FL, 3Seoul National University, Seoul, South Korea, 4Pfizer Inc, Groton, CT, 5Pfizer Inc, New York, NY, 6Pfizer Inc, Collegeville, PA

Meeting: 2016 ACR/ARHP Annual Meeting

Date of first publication: September 28, 2016

Keywords: Clinical Response, Rheumatoid arthritis (RA), Safety, tofacitinib and treatment

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Session Information

Date: Monday, November 14, 2016

Session Title: Rheumatoid Arthritis – Small Molecules, Biologics and Gene Therapy - Poster II

Session Type: ACR Poster Session B

Session Time: 9:00AM-11:00AM

Background/Purpose: Tofacitinib is an oral Janus kinase inhibitor for the treatment of RA. The objective of this analysis was to report tofacitinib safety and tolerability and clinical efficacy in long-term extension (LTE) studies over 96 months (Mo).

Methods: Data were pooled from 2 open-label studies (NCT00413699 [ongoing; database unlocked at January 2016 data-cut] and NCT00661661) of patients (pts) with RA who had participated in Phase 1/2/3 tofacitinib studies. Pts received tofacitinib 5 or 10 mg twice daily (BID) as monotherapy or with background DMARDs. Primary endpoints: adverse events (AEs) and confirmed laboratory safety data. Secondary endpoints included clinical efficacy measures (ACR20/50/70 response rates, DAS28-4[ESR], HAQ-DI, and clinical disease activity index). Safety data were included up to Mo 105 and efficacy data up to Mo 90 (n≤100 at Mo 96).

Results: 4,967 pts were treated (mean [max] duration: 1,215 [3,182] days). Total tofacitinib exposure was 16,711 pt-years (py); 77.4% of pts maintained initial dose. In total, 2,370 pts (47.7%) discontinued (AEs: 1,131 [22.8%]; insufficient clinical response: 175 [3.5%]). Most common AE classes: infections and infestations (68.9%) and musculoskeletal/connective tissue disorders (39.0%). Most common AEs: nasopharyngitis (18.7%), upper respiratory tract infection (17.2%), bronchitis and urinary tract infection (12.2% each). Serious AEs occurred in 28.6% of pts, and serious infections (SIEs) in 8.8% of pts. Malignancies, excluding non-melanoma skin cancer, were reported in 3.0% of pts. Incidence rates (IR; pts with events per 100 py) for AEs of interest, with 95% confidence intervals (CIs), are provided in Table 1. IRs for SIEs and malignancies through Mo 105 did not increase vs reported data through Mo 96.1 Confirmed laboratory data are provided in Table 1. No new safety risks were identified. Clinical responses were sustained from Mo 1 to Mo 90 (Table 2).  

Conclusion: In patients with RA who remained in LTEs, tofacitinib (5 or 10 mg BID) with or without background DMARDs was associated with consistent safety through Mo 105, and sustained clinical efficacy through Mo 90. Reference:

  1. Wollenhaupt J et al. Arthritis Rheumatol 2015; 67 (suppl 10): Abstract 1645.

 


Disclosure: J. Wollenhaupt, Pfizer Inc, 8,Pfizer Inc, 2; J. Silverfield, Pfizer Inc, 2; E. B. Lee, Pfizer Inc, 5; K. Terry, Pfizer Inc, 1,Pfizer Inc, 3; K. Kwok, Pfizer Inc, 3,Pfizer Inc, 1; S. Abramsky, Pfizer Inc, 1,Pfizer Inc, 3; M. Wang, Pfizer Inc, 1,Pfizer Inc, 3; C. Nduaka, Pfizer Inc, 1,Pfizer Inc, 3; R. DeMasi, Pfizer Inc, 1,Pfizer Inc, 3; L. Wang, Pfizer Inc, 1,Pfizer Inc, 3.

To cite this abstract in AMA style:

Wollenhaupt J, Silverfield J, Lee EB, Terry K, Kwok K, Abramsky S, Wang M, Nduaka C, DeMasi R, Wang L. Tofacitinib, an Oral Janus Kinase Inhibitor, in the Treatment of Rheumatoid Arthritis: Safety and Efficacy in Open-Label, Long-Term Extension Studies over 8 Years [abstract]. Arthritis Rheumatol. 2016; 68 (suppl 10). https://acrabstracts.org/abstract/tofacitinib-an-oral-janus-kinase-inhibitor-in-the-treatment-of-rheumatoid-arthritis-safety-and-efficacy-in-open-label-long-term-extension-studies-over-8-years/. Accessed February 6, 2023.
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