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Clinical Trial
. 2019 May 23;21(1):125.
doi: 10.1186/s13075-019-1916-9.

Etanercept treatment for extended oligoarticular juvenile idiopathic arthritis, enthesitis-related arthritis, or psoriatic arthritis: 6-year efficacy and safety data from an open-label trial

Ivan Foeldvari  1 , Tamàs Constantin  2 , Jelena Vojinović  3 , Gerd Horneff  4   5 , Vyacheslav Chasnyk  6 , Joke Dehoorne  7 , Violeta Panaviene  8   9 , Gordana Sušić  10 , Valda Stanevicha  11 , Katarzyna Kobusinska  12 , Zbigniew Zuber  13 , Bogna Dobrzyniecka  14 , Irina Nikishina  15 , Brigitte Bader-Meunier  16 , Luciana Breda  17 , Pavla Doležalová  18 , Chantal Job-Deslandre  19 , Ingrida Rumba-Rozenfelde  20   21 , Nico Wulffraat  22 , Ronald D Pedersen  23 , Jack F Bukowski  23 , Bonnie Vlahos  23 , Alberto Martini  24 , Nicolino Ruperto  25 ; Paediatric Rheumatology International Trials Organisation (PRINTO)
Affiliations
Clinical Trial

Etanercept treatment for extended oligoarticular juvenile idiopathic arthritis, enthesitis-related arthritis, or psoriatic arthritis: 6-year efficacy and safety data from an open-label trial

Ivan Foeldvari et al. Arthritis Res Ther. .

Abstract

Background: To describe the 6-year safety and efficacy of etanercept (ETN) in children with extended oligoarticular juvenile idiopathic arthritis (eoJIA), enthesitis-related arthritis (ERA), and psoriatic arthritis (PsA) METHODS: Patients who completed the 2-year, open-label, phase III CLinical Study In Pediatric Patients of Etanercept for Treatment of ERA, PsA, and Extended Oligoarthritis (CLIPPER) were allowed to enroll in its 8-year long-term extension (CLIPPER2). Children received ETN at a once-weekly dose of 0.8 mg/kg, up to a maximum dose of 50 mg/week. Efficacy assessments included the JIA core set of outcomes, the JIA American College of Rheumatology response criteria (JIA-ACR), and the Juvenile Arthritis Disease Activity Score (JADAS). Efficacy data are reported as responder analyses using a hybrid method for missing data imputation and as observed cases. Safety assessments included treatment-emergent adverse events (TEAEs).

Results: Out of 127 patients originally enrolled in CLIPPER, 109 (86%) entered CLIPPER2. After 6 years of trial participation (2 years in CLIPPER and 4 years in CLIPPER2), 41 (32%) patients were still taking ETN, 13 (11%) entered the treatment withdrawal phase after achieving low/inactive disease (of whom 7 had to restart ETN), 36 (28%) discontinued treatment for other reasons but are still being observed, and 37 (29%) discontinued treatment permanently. According to the hybrid imputation analysis, proportions of patients achieving JIA ACR90, JIA ACR100, and JADAS inactive disease after the initial 2 years of treatment were 58%, 48%, and 32%, respectively. After the additional 4 years, those proportions in patients who remained in the trial were 46%, 35%, and 24%. Most frequently reported TEAEs [n (%), events per 100 patient-years] were headache [28 (22%), 5.3], arthralgia [24 (19%), 4.6], and pyrexia [20 (16%), 3.8]. Number and frequency of TEAEs, excluding infections and injection site reactions, decreased over the 6-year period from 193 and 173.8, respectively, during year 1 to 37 and 61.3 during year 6. A single case of malignancy (Hodgkin's lymphoma) and no cases of active tuberculosis, demyelinating disorders, or deaths were reported.

Conclusions: Open-label etanercept treatment for up to 6 years was safe, well tolerated, and effective in patients with eoJIA, ERA, and PsA.

Trial registration: ClinicalTrials.gov: CLIPPER, NCT00962741 , registered 20 August, 2009, CLIPPER2, NCT01421069 , registered 22 August, 2011.

Keywords: Clinical trial; Efficacy; Enthesitis-related arthritis; Enthesitis-related arthritis (ERA); Etanercept; Extended oligoarticular juvenile idiopathic arthritis (eoJIA); Juvenile idiopathic arthritis; Psoriatic arthritis (PsA); Safety.

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Conflict of interest statement

I. Foeldvari has served on advisory boards with AbbVie, Novartis, Chugai, and Genzyme.

T. Constantin has received speaker’s fees from or served as a consultant for AbbVie, Novartis, Pfizer, and Roche.

J. Vojinović has received honoraria from AbbVie, Pfizer, TEVA, MSD, and Roche.

G. Horneff has received honoraria from Chugai, UCB, Pfizer, AbbVie, Roche, and Novartis.

J. Dehoorne has received speaker’s fees from or served as a consultant for AbbVie, Pfizer, and Roche.

V. Stanevicha has received consulting fees from AbbVie and Roche and has a partnership with Pfizer.

I. Nikishina has received honoraria from AbbVie, Bristol-Myers Squibb, Janssen, MSD, Novartis, Pfizer, and Roche.

P. Doležalová has received speaker’s bureau honoraria from Pfizer, AbbVie, Novartis, Hoffman-La Roche, Medac, Swedish Orphan Biovitrum, Eli Lilly, Sanofi, and Genzyme.

R. Pedersen and B. Vlahos are employees of Pfizer, the sponsor of this study, and own company stock.

J. Bukowski is a former employee of Pfizer, the sponsor of this study, and may own company stock.

A. Martini has received speaker’s bureau and honoraria from Abbott, AbbVie, Amgen, Biogen Idec, Bristol-Myers Squibb, Astellas, Boehringer, Italfarmaco, Janssen, MedImmune, Novartis, Novo Nordisk, Pfizer, Sanofi, Roche, Servier, and Takeda.

N. Ruperto has received speaker’s bureau and honoraria from Abbott, AbbVie, Amgen, Biogen Idec, Astellas, Alter, AstraZeneca, Boehringer, Bristol-Myers Squibb, CD-Pharma, Celgene, Crescendo Bioscience, EMD Serono, Hoffman-La Roche, Italfarmaco, Janssen, MedImmune, Medac, Novartis, Novo Nordisk, Pfizer, Sanofi Aventis, Servier, Takeda, and Vertex.

The IRCCS Istituto Giannina Gaslini, which is the public hospital where Dr. Ruperto and Prof Martini work as full-time employees, has received contributions to support the research activities of the network of PRINTO (www.printo.it) from Abbott, Bristol-Myers Squibb, Francesco Angelini SPA, Glaxo SmithKline, Janssen Biotech Inc., Novartis, Pfizer Inc., Roche, Sanofi Aventis, and Schwarz Biosciences GmbH; this money has been reinvested for the research activities of the hospital in a fully independent manner without any commitment to third parties.

V. Chasnyk, V. Panaviene, G. Sušić, K. Kobusinska, Z. Zuber, B. Dobrzyniecka, B. Bader-Meunier, L. Breda, C. Job-Deslandre, I. Rumba-Rozenfelde, and N. Wulffraat declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Study flow. (a) Patients actively receiving treatment with ETN. (b) Patients who either achieved CRACR or who, in the investigator’s clinical judgment, had a good clinical response and would benefit from treatment withdrawal. (c) Patients in the withdrawal period who required re-treatment per the investigator’s clinical judgment and re-started ETN. (d) Patients who stopped treatment but were still followed in CLIPPER2. (e) Patients who were no longer being followed as part of CLIPPER or CLIPPER2. *Includes two patients who entered the observational period directly from CLIPPER, plus three patients who entered the observational period from another treatment phase. †Nine out of 22 patients entered the withdrawal period because of a treatment-emergent adverse event. Abbreviations: CRACR, clinical remission, based on the American College of Rheumatology criteria [21]
Fig. 2
Fig. 2
JADAS 73 Score by visit (observed cases). CI, confidence interval; CID, clinically inactive disease; eoJIA, extended oligoarticular juvenile idiopathic arthritis; ERA, enthesitis-related arthritis; HDA, high disease activity; JADAS, Juvenile Arthritis Disease Activity Score; LDA, low disease activity; MDA, moderate disease activity; PsA, psoriatic arthritis
Fig. 3
Fig. 3
ACR30–100 and JIA inactive disease response rates by visit (hybrid imputation method). Note: For patients with PsA, values for ACR30 and ACR50 overlap completely for all visits after week 24. Abbreviations: eoJIA, extended oligoarticular juvenile idiopathic arthritis; ERA, enthesitis-related arthritis; PsA, psoriatic arthritis
See this image and copyright information in PMC

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