A Study of Ixekizumab in Participants With Active Psoriatic Arthritis
SPIRIT-P1
A Multicenter, Randomized, Double-Blind, Active and Placebo-Controlled 24-Week Study Followed by Long Term Evaluation of Efficacy and Safety of Ixekizumab (LY2439821) in Biologic Disease-Modifying Antirheumatic Drug-Naive Patients With Active Psoriatic Arthritis
2 other identifiers
interventional
417
14 countries
115
Brief Summary
This study will assess the safety and efficacy of ixekizumab (LY2439821) compared to placebo in participants with active psoriatic arthritis.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_3
Started Dec 2012
Longer than P75 for phase_3
115 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 25, 2012
CompletedFirst Posted
Study publicly available on registry
September 27, 2012
CompletedStudy Start
First participant enrolled
December 1, 2012
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2014
CompletedResults Posted
Study results publicly available
October 27, 2016
CompletedStudy Completion
Last participant's last visit for all outcomes
September 1, 2017
CompletedJanuary 8, 2019
December 1, 2018
2 years
September 25, 2012
April 20, 2016
December 16, 2018
Conditions
Outcome Measures
Primary Outcomes (1)
Percentage of Participants Achieving American College of Rheumatology 20 (ACR20) Response at Week 24 (Efficacy of Ixekizumab in Participants With Active Psoriatic Arthritis. Measure: American College of Rheumatology 20 Index [ACR20])
ACR20 response is defined as a ≥20% improvement from baseline for tender joint count (TJC) and swollen joint count (SJC) and in at least 3 of the following 5 criteria: Participant's assessment of Joint Pain visual analog scale (VAS), Participant's Global Assessment of Disease Activity VAS (PatGA), Physician's Global Assessment of the Disease Activity VAS (PGA), Participant's Assessment of Physical Function using the Health Assessment Questionnaire Disability Index (HAQ-DI), or Acute Phase Reactant as measured by high sensitivity C-reactive protein (hs-CRP).
Week 24
Secondary Outcomes (30)
Percentage of Participants Achieving ACR20 Response
Week 12
Percentage of Participants Achieving American College of Rheumatology 50 (ACR50) Response
Week 24
Percentage of Participants Achieving American College of Rheumatology 70 (ACR70) Score
Week 24
Change From Baseline in Health Assessment Questionnaire-Disability Index (HAQ-DI) Scores (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
Baseline, Week 24
Change From Baseline in Modified Total Sharp Score (mTSS) (Efficacy of Ixekizumab in Participants With Active Psoriatic Arthritis. Measure: Modified Total Sharp Score [mTSS])
Baseline, Week 24
- +25 more secondary outcomes
Study Arms (4)
Ixekizumab Q2W
EXPERIMENTALAdministered by 80 milligram (mg) subcutaneous (SC) injection every 2 weeks (Q2W).
Ixekizumab Q4W
EXPERIMENTALAdministered by 80 mg SC injection every 4 weeks (Q4W).
Placebo
PLACEBO COMPARATORPlacebo for ixekizumab and placebo for adalimumab administered by SC injection.
Adalimumab Q2W
ACTIVE COMPARATORAdministered by 40 mg SC injection Q2W.
Interventions
Eligibility Criteria
You may qualify if:
- Presents with established diagnosis of active psoriatic arthritis for at least 6 months, and currently meets Classification for Psoriatic Arthritis (CASPAR) criteria
- Active psoriatic arthritis (PsA) defined as the presence of at least 3 tender and at least 3 swollen joints
- Presence of active psoriatic skin lesion or a personal history of plaque psoriasis (Ps)
- Men must agree to use a reliable method of birth control or remain abstinent during the study
- Women must agree to use reliable birth control or remain abstinent during the study and for at least 12 weeks after stopping treatment
You may not qualify if:
- Current or prior use of biologic agents for treatment of Ps or PsA
- Inadequate response to greater than or equal to 4 conventional disease-modifying antirheumatic drugs (DMARDs)
- Current use of more than one conventional DMARD
- Evidence of active inflammatory arthritic syndromes or spondyloarthropathies other than PsA
- Have participated in any study with interleukin 17 (IL-17) antagonists, including ixekizumab
- Serious disorder or illness other than psoriatic arthritis
- Serious infection within the last 3 months
- Breastfeeding or nursing (lactating) women
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (116)
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Birmingham, Alabama, 35205, United States
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Huntsville, Alabama, 35801, United States
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Tuscaloosa, Alabama, 35406, United States
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Little Rock, Arkansas, 72205, United States
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Upland, California, 91786, United States
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Trumbull, Connecticut, 06611, United States
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Boca Raton, Florida, 33486, United States
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Orange Park, Florida, 32073, United States
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Tampa, Florida, 33614, United States
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Zephyrhills, Florida, 33542, United States
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Atlanta, Georgia, 30342, United States
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Decatur, Georgia, 30033, United States
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Marietta, Georgia, 30060, United States
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Indianapolis, Indiana, 46227, United States
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Cedar Rapids, Iowa, 52403, United States
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Wichita, Kansas, 67207, United States
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Cumberland, Maryland, 21502, United States
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Hagerstown, Maryland, 21740, United States
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St Louis, Missouri, 63141, United States
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Toms River, New Jersey, 08753, United States
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Voorhees Township, New Jersey, 08043, United States
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Brooklyn, New York, 11201, United States
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Rochester, New York, 14642, United States
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Charlotte, North Carolina, 28210, United States
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Durham, North Carolina, 27704, United States
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Greensboro, North Carolina, 27408, United States
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Dayton, Ohio, 45417, United States
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Duncansville, Pennsylvania, 16635, United States
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Columbia, South Carolina, 29204, United States
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Orangeburg, South Carolina, 29118, United States
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Jackson, Tennessee, 38305, United States
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Dallas, Texas, 75231, United States
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Houston, Texas, 77062, United States
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Kennewick, Washington, 99336, United States
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Seattle, Washington, 98122, United States
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Spokane, Washington, 99204, United States
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Clarksburg, West Virginia, 26301, United States
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Genk, 3600, Belgium
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Ghent, 9000, Belgium
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Liège, 4000, Belgium
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Pleven, 5800, Bulgaria
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Plovdiv, 4002, Bulgaria
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Sliven, 8800, Bulgaria
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Sofia, 1233, Bulgaria
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Stara Zagora, 6000, Bulgaria
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Ottawa, Ontario, K1H 1A2, Canada
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Toronto, Ontario, M5T2S8, Canada
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Waterloo, Ontario, N2J 1C4, Canada
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Québec, G1V3M7, Canada
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Brno, 638 00, Czechia
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Bruntál, 79201, Czechia
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Hlučín, 748 01, Czechia
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Ostrava - Trebovice, 722 00, Czechia
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Prague, 15800, Czechia
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Zlín, 760 01, Czechia
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Tallinn, 13419, Estonia
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Bordeaux, 33076, France
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Nantes, 44093, France
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Orléans, 45032, France
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Toulouse, 31059, France
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Fukuoka, 810-8563, Japan
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Hokkaido, 078-8510, Japan
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Okayama, 700-8558, Japan
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Osaka, 545-8586, Japan
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Tokyo, 160-8582, Japan
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Chihuahua City, 31238, Mexico
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Guadalajara, 45040, Mexico
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Mexico City, 06700, Mexico
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Monterrey, 64000, Mexico
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San Luis Potosí City, 78213, Mexico
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Almelo, 7600SZ, Netherlands
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Amsterdam, 1105 AZ, Netherlands
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Maastricht, 6229 HX, Netherlands
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Nijmegen, 6522 JV, Netherlands
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Rotterdam, 3079 DZ, Netherlands
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Sneek, 8601 ZK, Netherlands
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Bialystok, 158-79, Poland
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Katowice, 40-635, Poland
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Krakow, 31-501, Poland
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Lublin, 20-582, Poland
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Poznan, 60-539, Poland
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Środa Wielkopolska, 63-000, Poland
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Warsaw, 02-118, Poland
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Wroclaw, 51-124, Poland
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Barnaul, 656024, Russia
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Kazan', 420097, Russia
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Moscow, 115522, Russia
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Petrozavodsk, 185019, Russia
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Saint Petersburg, 193257, Russia
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Yekaterinburg, 620102, Russia
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Barcelona, 08034, Spain
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Bilbao, 48013, Spain
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Córdoba, 14004, Spain
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Majadahonda, 28222, Spain
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Málaga, 29009, Spain
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Sabadell, 08208, Spain
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Santander, 39008, Spain
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Seville, 41009, Spain
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Dnipropetrovsk, 49044, Ukraine
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Donetsk, 83045, Ukraine
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Ivano-Frankivsk, 76008, Ukraine
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Kharkiv, 61176, Ukraine
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Kyiv, 03680, Ukraine
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Lutsk, 43024, Ukraine
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Lviv, 79011, Ukraine
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Odesa, 65026, Ukraine
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Vinnytsia, 21029, Ukraine
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Zaporizhzhia, 69600, Ukraine
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Cambridge, Cambridgeshire, CB2 0QQ, United Kingdom
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Goodmayes, Essex, IG7 4DY, United Kingdom
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London, Greater London, E11 1NR, United Kingdom
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Headington, Oxford, OX3 7LE, United Kingdom
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Wolverhampton, West Midlands, WV10 0QP, United Kingdom
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Bradford, West Yorkshire, BD5 0NA, United Kingdom
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Leeds, West Yorkshire, LS7 4SA, United Kingdom
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Liverpool, L9 7AL, United Kingdom
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Kristensen LE, McGonagle D, Rudwaleit M, Kameda H, Wurtzen PA, Ngantcha M, Holzkamper T, Smolen J. Synergistic Improvements in Synovitis, Enthesitis, and Patient-Reported Outcomes for Patients with Psoriatic Arthritis Treated with Ixekizumab in SPIRIT Trials. Rheumatol Ther. 2025 Apr;12(2):381-395. doi: 10.1007/s40744-025-00748-8. Epub 2025 Feb 27.
PMID: 40014255DERIVEDTillett W, Birt J, Vadhariya A, Ross S, Ngantcha M, Ng KJ. Filling the "GAP" in Real-World Assessment of Psoriatic Arthritis Disease Activity: Performance Characteristics of a Global/Pain Composite Endpoint. Rheumatol Ther. 2024 Oct;11(5):1101-1114. doi: 10.1007/s40744-024-00690-1. Epub 2024 Jul 2.
PMID: 38955921DERIVEDArmstrong AW, Jaleel T, Merola JF, Gottlieb AB, Khattri S, Helt CC, Malatestinic WN, Ross SE, Ngantcha ME, de Vlam K. Ixekizumab Demonstrates Rapid and Consistent Efficacy for Patients with Psoriatic Arthritis, Regardless of Psoriasis Severity. Dermatol Ther (Heidelb). 2024 Jun;14(6):1615-1631. doi: 10.1007/s13555-024-01188-y. Epub 2024 May 30.
PMID: 38814433DERIVEDKameda H, Hagimori K, Morisaki Y, Holzkamper T, Konomi A, Dobashi H. Ixekizumab Efficacy in Patients with Severe Peripheral Psoriatic Arthritis: A Post Hoc Analysis of a Phase 3, Randomized, Double-Blind, Placebo-Controlled Study (SPIRIT-P1). Rheumatol Ther. 2023 Dec;10(6):1683-1703. doi: 10.1007/s40744-023-00605-6. Epub 2023 Oct 19.
PMID: 37858007DERIVEDCoates LC, Smolen JS, Mease PJ, Husni ME, Merola JF, Lespessailles E, Kishimoto M, Macpherson L, Bradley AJ, Bolce R, Helliwell PS. Comparative performance of composite measures from two phase III clinical trials of ixekizumab in psoriatic arthritis. RMD Open. 2022 Sep;8(2):e002457. doi: 10.1136/rmdopen-2022-002457.
PMID: 36171019DERIVEDEder L, Tony HP, Odhav S, Agirregoikoa EG, Korkosz M, Schwartzman S, Sprabery AT, Gellett AM, Park SY, Bertram CC, Ogdie A. Responses to Ixekizumab in Male and Female Patients with Psoriatic Arthritis: Results from Two Randomized, Phase 3 Clinical Trials. Rheumatol Ther. 2022 Jun;9(3):919-933. doi: 10.1007/s40744-022-00445-w. Epub 2022 Apr 9.
PMID: 35397092DERIVEDDeodhar AA, Combe B, Accioly AP, Bolce R, Zhu D, Gellett AM, Sprabery AT, Burmester GR. Safety of ixekizumab in patients with psoriatic arthritis: data from four clinical trials with over 2000 patient-years of exposure. Ann Rheum Dis. 2022 Jul;81(7):944-950. doi: 10.1136/annrheumdis-2021-222027. Epub 2022 Apr 7.
PMID: 35393269DERIVEDCombe B, Tsai TF, Huffstutter JE, Sprabery AT, Lin CY, Park SY, Kronbergs A, Hufford MM, Nash P. Ixekizumab, with or without concomitant methotrexate, improves signs and symptoms of PsA: week 52 results from Spirit-P1 and Spirit-P2 studies. Arthritis Res Ther. 2021 Jan 27;23(1):41. doi: 10.1186/s13075-020-02388-5.
PMID: 33499913DERIVEDSchweikert B, Malmberg C, Nunez M, Dilla T, Sapin C, Hartz S. Cost-effectiveness analysis of ixekizumab versus secukinumab in patients with psoriatic arthritis and concomitant moderate-to-severe psoriasis in Spain. BMJ Open. 2020 Aug 13;10(8):e032552. doi: 10.1136/bmjopen-2019-032552.
PMID: 32792421DERIVEDChandran V, van der Heijde D, Fleischmann RM, Lespessailles E, Helliwell PS, Kameda H, Burgos-Vargas R, Erickson JS, Rathmann SS, Sprabery AT, Birt JA, Shuler CL, Gallo G. Ixekizumab treatment of biologic-naive patients with active psoriatic arthritis: 3-year results from a phase III clinical trial (SPIRIT-P1). Rheumatology (Oxford). 2020 Oct 1;59(10):2774-2784. doi: 10.1093/rheumatology/kez684.
PMID: 32031665DERIVEDCombe B, Rahman P, Kameda H, Canete JD, Gallo G, Agada N, Xu W, Genovese MC. Safety results of ixekizumab with 1822.2 patient-years of exposure: an integrated analysis of 3 clinical trials in adult patients with psoriatic arthritis. Arthritis Res Ther. 2020 Jan 21;22(1):14. doi: 10.1186/s13075-020-2099-0.
PMID: 31964419DERIVEDTillett W, Lin CY, Zbrozek A, Sprabery AT, Birt J. A Threshold of Meaning for Work Disability Improvement in Psoriatic Arthritis Measured by the Work Productivity and Activity Impairment Questionnaire. Rheumatol Ther. 2019 Sep;6(3):379-391. doi: 10.1007/s40744-019-0155-5. Epub 2019 Jun 1.
PMID: 31154634DERIVEDCoates LC, Orbai AM, Morita A, Benichou O, Kerr L, Adams DH, Shuler CL, Birt J, Helliwell PS. Achieving minimal disease activity in psoriatic arthritis predicts meaningful improvements in patients' health-related quality of life and productivity. BMC Rheumatol. 2018 Aug 13;2:24. doi: 10.1186/s41927-018-0030-y. eCollection 2018.
PMID: 30886974DERIVEDGladman DD, Orbai AM, Klitz U, Wei JC, Gallo G, Birt J, Rathmann S, Shrom D, Marzo-Ortega H. Ixekizumab and complete resolution of enthesitis and dactylitis: integrated analysis of two phase 3 randomized trials in psoriatic arthritis. Arthritis Res Ther. 2019 Jan 29;21(1):38. doi: 10.1186/s13075-019-1831-0.
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PMID: 29945203DERIVEDCoates LC, Kishimoto M, Gottlieb A, Shuler CL, Lin CY, Lee CH, Mease PJ. Ixekizumab efficacy and safety with and without concomitant conventional disease-modifying antirheumatic drugs (cDMARDs) in biologic DMARD (bDMARD)-naive patients with active psoriatic arthritis (PsA): results from SPIRIT-P1. RMD Open. 2017 Dec 22;3(2):e000567. doi: 10.1136/rmdopen-2017-000567. eCollection 2017.
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PMID: 27553214DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Chief Medical Officer
- Organization
- Eli Lilly and Company
Study Officials
- STUDY DIRECTOR
Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST)
Eli Lilly and Company
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- GT60
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 25, 2012
First Posted
September 27, 2012
Study Start
December 1, 2012
Primary Completion
December 1, 2014
Study Completion
September 1, 2017
Last Updated
January 8, 2019
Results First Posted
October 27, 2016
Record last verified: 2018-12