Psoriasis, ArthriticPhase 3SPIRIT-P1NCT01695239
A Study of Ixekizumab in Participants With Active Psoriatic Arthritis
A Phase 3 study testing Ixekizumab and Adalimumab in people with Psoriasis, Arthritic, run by Eli Lilly and Company at 116 sites in 15 countries.
Trial summary
This study will assess the safety and efficacy of ixekizumab (LY2439821) compared to placebo in participants with active psoriatic arthritis. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Psoriasis, Arthritic
- What is being tested?
- Ixekizumab and Adalimumab
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 417 participants
- Where
- 116 sitesin 15 countries
- Study dates
- Dec 2012to Sep 2017
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 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
Who cannot join
- 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
Trial locations and contacts
116 sites in 15 countries.
116 sites in 15 countries
United States37 sites
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Atlanta, Georgia, 30342
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Birmingham, Alabama, 35205
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Boca Raton, Florida, 33486
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Brooklyn, New York, 11201
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Cedar Rapids, Iowa, 52403
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Charlotte, North Carolina, 28210
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Clarksburg, West Virginia, 26301
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Columbia, South Carolina, 29204
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Cumberland, Maryland, 21502
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Dallas, Texas, 75231
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Dayton, Ohio, 45417
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Decatur, Georgia, 30033
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Duncansville, Pennsylvania, 16635
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Durham, North Carolina, 27704
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Greensboro, North Carolina, 27408
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Hagerstown, Maryland, 21740
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Houston, Texas, 77062
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Huntsville, Alabama, 35801
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Indianapolis, Indiana, 46227
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Jackson, Tennessee, 38305
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Kennewick, Washington, 99336
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Little Rock, Arkansas, 72205
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Marietta, Georgia, 30060
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Orange Park, Florida, 32073
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Orangeburg, South Carolina, 29118
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Rochester, New York, 14642
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Seattle, Washington, 98122
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Spokane, Washington, 99204
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St Louis, Missouri, 63141
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Tampa, Florida, 33614
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Toms River, New Jersey, 08753
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Trumbull, Connecticut, 06611
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Tuscaloosa, Alabama, 35406
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Upland, California, 91786
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Voorhees Township, New Jersey, 08043
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Wichita, Kansas, 67207
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Zephyrhills, Florida, 33542
Ukraine10 sites
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Dnipropetrovsk, 49044
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Donetsk, 83045
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Ivano-Frankivsk, 76008
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Kharkiv, 61176
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Kyiv, 03680
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Lutsk, 43024
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Lviv, 79011
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Odesa, 65026
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Vinnytsia, 21029
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Zaporizhzhya, 69600
Poland8 sites
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Bialystok, 158-79
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Katowice, 40-635
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Krakow, 31-501
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Lublin, 20-582
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Poznan, 60-539
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Środa Wielkopolska, 63-000
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Warsaw, 02-118
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Wroclaw, 51-124
Spain8 sites
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Barcelona, 08034
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Bilbao, 48013
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Córdoba, 14004
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Majadahonda, 28222
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Málaga, 29009
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Sabadell, 08208
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Santander, 39008
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Seville, 41009
United Kingdom8 sites
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Bradford, West Yorkshire, BD5 0NA
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Cambridge, Cambridgeshire, CB2 0QQ
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Goodmayes, Essex, IG7 4DY
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Headington, Oxford, OX3 7LE
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Leeds, West Yorkshire, LS7 4SA
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Liverpool, L9 7AL
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London, Greater London, E11 1NR
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Wolverhampton, West Midlands, WV10 0QP
Czechia6 sites
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Brno, 638 00
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Bruntál, 79201
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Hlučín, 748 01
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Ostrava - Trebovice, 722 00
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Prague, 15800
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Zlín, 760 01
Netherlands6 sites
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Almelo, 7600SZ
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Amsterdam, 1105 AZ
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Maastricht, 6229 HX
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Nijmegen, 6522 JV
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Rotterdam, 3079 DZ
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Sneek, 8601 ZK
Russia6 sites
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Barnaul, 656024
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Kazan', 420097
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Moscow, 115522
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Petrozavodsk, 185019
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Saint Petersburg, 193257
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Yekaterinburg, 620102
Bulgaria5 sites
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Pleven, 5800
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Plovdiv, 4002
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Sliven, 8800
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Sofia, 1233
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Stara Zagora, 6000
Japan5 sites
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Fukuoka, 810-8563
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Hokkaido, 078-8510
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Okayama, 700-8558
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Osaka, 545-8586
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Tokyo, 160-8582
Mexico5 sites
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Chihuahua City, 31238
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Guadalajara, 45040
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Mexico City, 06700
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Monterrey, 64000
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San Luis Potosí City, 78213
Canada4 sites
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Ottawa, Ontario, K1H 1A2
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Québec, G1V3M7
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Toronto, Ontario, M5T2S8
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Waterloo, Ontario, N2J 1C4
France4 sites
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Bordeaux, 33076
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Nantes, 44093
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Orléans, 45032
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Toulouse, 31059
Belgium3 sites
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Genk, 3600
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Ghent, 9000
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Liège, 4000
Estonia1 site
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Tallinn, 13419
About this study
Official title: 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
This study will assess the safety and efficacy of ixekizumab (LY2439821) compared to placebo in participants with active psoriatic arthritis.
- Conditions
- Psoriasis, Arthritic
- Being tested
- Ixekizumab, Placebo, Adalimumab
- Medical subject headings
- Arthritis, Psoriatic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
IxekizumabDrug
Also called LY2439821
Administered SC
PlaceboDrug
Administered SC
AdalimumabDrug
Administered SC
| Study group | Role | What they receive |
|---|---|---|
| Ixekizumab Q2W | Experimental | Administered by 80 milligram (mg) subcutaneous (SC) injection every 2 weeks (Q2W). Receives: Drug: Ixekizumab |
| Ixekizumab Q4W | Experimental | Administered by 80 mg SC injection every 4 weeks (Q4W). Receives: Drug: Ixekizumab |
| Placebo | Placebo comparator | Placebo for ixekizumab and placebo for adalimumab administered by SC injection. Receives: Drug: Placebo |
| Adalimumab Q2W | Active comparator | Administered by 40 mg SC injection Q2W. Receives: Drug: Adalimumab |
What is being measured
The primary outcome is the main question the study is designed to answer.
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).
Measured: Week 24
Secondary outcomes (30)
Percentage of Participants Achieving ACR20 Response
ACR20 response is defined as a ≥20% improvement from baseline for TJC and SJC and in at least 3 of the following 5 criteria: Participant's assessment of Joint Pain VAS, Participant's Global Assessment of Disease Activity VAS, Physician's Global Assessment of the Disease Activity VAS, Participant's Assessment of Physical Function using the HAQ-DI, or hs-CRP.
Measured: Week 12
Percentage of Participants Achieving American College of Rheumatology 50 (ACR50) Response
ACR50 response is defined as a ≥50% improvement from baseline for TJC and SJC and in at least 3 of the following 5 criteria: Participant's assessment of Joint Pain VAS, Participant's Global Assessment of Disease Activity VAS, Physician's Global Assessment of the Disease Activity VAS, Participant's Assessment of Physical Function using the HAQ-DI, or hs-CRP.
Measured: Week 24
Percentage of Participants Achieving American College of Rheumatology 70 (ACR70) Score
ACR70 response is defined as a ≥70% improvement from baseline for TJC and SJC and in at least 3 of the following 5 criteria: Participant's assessment of Joint Pain VAS, Participant's Global Assessment of Disease Activity VAS, Physician's Global Assessment of the Disease Activity VAS, Participant's Assessment of Physical Function using the HAQ-DI, or hs-CRP.
Measured: 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])
HAQ-DI is a participant reported questionnaire that measures disease-associated disability (physical function). It consists of 24 questions with 8 domains: dressing/grooming, arising, eating, walking, hygiene, reach, grip, and other daily activities. The disability section scores the participant's self-perception on the degree of difficulty (0 = without any difficulty, 1 = with some difficulty, 2 = with much difficulty, and 3 = unable to do), covering the 8 domains. The HAQ-DI is a composite ranging from 0-3 with lower scores indicating less functional disability. The reported use of special aids or devices and/or the need for assistance of another person to perform these activities is assessed. Least Square (LS) mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline score, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: 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])
The mTSS measures the extent of bone erosions (20 joints per hand and 12 joints per foot) and joint space narrowing (20 joints per hand and 6 joints per foot), with higher scores representing greater damage. An increase from baseline represents disease progression and / or joint worsening. Scores range from 0-528. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, and baseline cDMARD experience, visit, treatment by visit interaction.
Measured: Baseline, Week 24
Percentage of Participants Achieving Psoriasis Area and Severity Index 75%, 90%, 100% (PASI 75, 90, 100)
The PASI is an index that combines assessments of the extent of body-surface involvement in 4 anatomical regions (head, trunk, arms, and legs) and the severity of desquamation, erythema, and plaque induration/infiltration (thickness) in each region, yielding an overall score of 0 for no psoriasis to 72 for the most severe disease. Participants achieving PASI 75 were defined as having an improvement of at least 75% in the PASI compared to their baseline measures. Participants achieving PASI 90 were defined as having an improvement of ≥90% in the PASI score compared to baseline. Participants achieving PASI 100 were defined as having an improvement of 100% in the PASI score compared to baseline.
Measured: Week 12
Change From Baseline in Leeds Enthesitis Index (LEI)
The LEI was developed specifically for use in PsA. It measures enthesitis at 6 sites (lateral epicondyle, left and right; medial femoral condyle, left and right; Achilles tendon insertion, left and right). Each site was assigned a score of 0 (absent) or 1 (present); the results from each site were then added to produce a total score (range 0 to 6). LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, treatment by visit interaction.
Measured: Baseline, Week 12
Change From Baseline in Itching Severity Using the Itch Numeric Rating Scale (NRS) (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
The Itch NRS is a participant-administered, 11-point horizontal scale anchored at 0 and 10, with 0 representing "no itch" and 10 representing "worst itch imaginable." Overall severity of a participant's itching from psoriasis was indicated by circling the number that best described the worst level of itching in the past 24 hours. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 12
Change From Baseline in Fatigue Severity NRS Score (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
The Fatigue Severity NRS is a participant-administered single-item 11-point horizontal scale anchored at 0 and 10, with 0 representing "no fatigue" and 10 representing "as bad as you can imagine." Participants rated their fatigue (feeling tired or worn out) by circling the 1 number that described their worst level of fatigue during the past 24 hours. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Joint Space Narrowing Score (JSN) And Bone Erosion Score (BES)
JSN score (a component of the modified Total Sharp Score [mTSS]) measures the extent of joint space narrowing in peripheral joints. JSN (20 joints per hand and 6 joints per foot), with higher scores representing greater damage. JSN score range is 0 (no narrowing) to 208 (high narrowing). Increase from baseline represents disease progression and / or joint worsening. BES (a component of the [mTSS]) measures the extent of bone erosion in peripheral joints. BES measures the extent of joint erosions (20 joints per hand and 12 joints per foot), with higher scores representing greater damage. Erosion score range is from 0 (no erosion) to 320 (high erosion). LS mean was calculated using linear extrapolation for ANCOVA analysis with treatment, baseline score, geographic region, and baseline cDMARD experience.
Measured: Baseline, Week 24
Change From Baseline in Medical Outcomes Study 36-item Short Form Health Survey (SF-36): Physical Component Summary (PCS) and Mental Component Summary (MCS) (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
SF-36 is a standardized participant-administered measure designed to evaluate 8 domains of functional health and well being: physical and social functioning, physical and emotional role (role-physical, role-emotional) limitations, bodily pain, general health, vitality, mental health with 2 components (physical component score [PCS] and mental component score [MCS]). The PCS and MCS scores range from 0 to 100, with higher scores indicating better levels of function and/or better health. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Quick Inventory of Depressive Symptomatology-Self Reported 16 Items (QIDS-SR16) (Quality of Life and Outcome Assessments. Measures: Patient Reported Outcomes [PRO])
The QIDS-SR16 is a self-administered 16-item instrument intended to assess the existence and severity of symptoms of depression. A participant is asked to consider each statement as it relates to the way they have felt for the past 7 days. Each item scaled from 0 (no symptoms) to 3 (all symptoms). The 16 items corresponding to 9 depression domains are summed to give a single score ranging from 0 to 27, with higher scores denoting greater symptom severity. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Disease Activity Score (28 Diarthrodial Joint Count) Based on C-ReactiveProtein (DAS28-CRP) Measure: Non-Arthritic Disease
The DAS28-CRP is a measure of disease activity in 28 joints that consists of a composite numerical score with the following variables: TJC28, SJC28, hs-CRP measured in milligram/liter (mg/L), and Participant's Global Assessment of Disease Activity recorded by participants on a 0 to 100 millimeter (mm) VAS. For DAS28-CRP, the Tender Joint Count 28 (TJC28) and Swollen Joint Count (SJC28) are a subset of TJC and SJC, and include 14 joints on each side of the body: 2 shoulders, 2 elbows, 2 wrists, 10 metacarpophalangeal joints, the 2 interphalangeal joints of the thumb, the 8 proximal interphalangeal joints, and the 2 knees. DAS28 values range from 0 to 9.4. Higher values indicate more severe symptoms and greater functional impairment. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit.
Measured: Baseline, Week 24
Percentage of Participants Meeting the Psoriatic Arthritis Response Criteria (PsARC Modified)
The PsARC is a composite criteria reported in terms of the percentage of participants achieving response according to the following criterion: TJC, SJC, PGA, and PatGA. Overall response is defined by improvement from baseline assessment in 2 of 4 criteria, 1 of which must be a joint count; there must not be worsening in any of the 4 criteria: at least 30% reduction in TJC, at least 30% reduction in SJC, at least a 20 millimeter (mm) reduction in PGA and at least a 20 mm reduction in PatGA which is equivalent to 20 mm reduction. The results from the 2 VAS measures were assessed as a difference from baseline in mm.
Measured: Week 24
Percentage of Participants Achieving Static Physician Global Assessment (sPGA) of 0 or 1 and With at Least a 2-point Improvement From Baseline
The sPGA is the physician's determination of the severity of the participant's psoriasis lesions overall at a given time point. Overall lesions were categorized by descriptions for induration, erythema, and scaling. For the analysis of responses, the participant's psoriasis was assessed at a given time point on in which 0 = clear, 1 = minimal, 2 = mild, 3 = moderate, 4 = severe, 5 = very severe.
Measured: Week 24
Percent Change From Baseline in Body Surface Area (BSA)
The investigator evaluated the percentage involvement of psoriasis on each participant's BSA on a continuous scale from 0% = no involvement to 100% = full involvement, where 1% corresponded to the size of the participant's handprint including the palm, fingers, and thumb. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in the Nail Psoriasis Severity Index (NAPSI) Score Fingernail Involvement at Baseline
The NAPSI scale is used to evaluate the severity of fingernail bed Ps and fingernail matrix Ps by area of involvement. The fingernail is divided into quadrants. Each fingernail is given a score for fingernail bed Ps 0 (none) to 4 (Ps in 4 quadrants of the fingernail) and fingernail matrix Ps 0 (none) to 4 (Ps in 4 quadrants of the matrix), depending on the presence (score of 1) or absence (score of 0) of any of the features of fingernail bed or matrix Ps in each quadrant. The sum of all fingernails equals the total NAPSI score range is from 0 (no effect) to 80 (more severe psoriasis). LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Leeds Dactylitis Index-Basic (LDI-B)
The LDI-B measures the severity of dactylitis. In each digit, the ratio of the circumference of the affected digit to the circumference of the digit on the opposite hand or foot measured in mm. Each dactylitic digit was defined by a minimum increase of 10% in circumference over the contra-lateral digit. If the same digits on each hand or foot were thought to be involved, the clinician referred to a table of normative values for a value which was used to provide the comparison. The calculated ratio was multiplied by a tenderness score of 0 (not tender) or 1 (tender). Tenderness was assessed in the area between the joints. The results of each digit were then added to produce a total score. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in in the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI)
The BASDAI is a self-administered measure used to answer 6 questions with a 0 to 10 centimeter (cm) VAS pertaining to the 5 major symptoms of axial activity. To give each symptom equal weighting, the mean of the 2 scores relating to morning stiffness was taken. The resulting 0 to 50 score was divided by 5 to give a final 0 to 10 BASDAI Score. BASDAI ranges from 0-10. Higher scores represent greater disease activity. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Number of Participants With Treatment Emergent Anti-Ixekizumab Antibodies (TE-ADA) and Neutralizing Antibodies (NAb)
Number of participants with positive treatment emergent anti-ixekizumab antibodies and NAb was summarized by treatment group.
Measured: Baseline to Week 24
Percent Change in American College of Rheumatology-N (ACR-N) Score
The ACR-N score is a continuous measure of clinical, laboratory, and functional outcomes that characterizes the percentage of improvement from baseline in disease activity and the lowest of either a) the percent change in tender joint count (TJC) b) the percent change in swollen joint count (SJC), or c) the median percent change of the remaining 5 ACR core criteria. An ACR-N score of X has improvement of at least X% in both TJC and SJC and a median improvement of at least X% in 5 criteria: patient's assessment of arthritis pain, PatGA, PGA, HAQ-DI and hs-CRP. ACR-N is calculated by allowing for negative results which indicate worsening. LS mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment.
Measured: Baseline, 24 Weeks
Change From Baseline in Tender Joint Counts (TJC)
TJC is calculated based on tenderness response of 68 joints. TJC possible values range from 0 to 68. A lower TJC indicated less joint tenderness. A higher TJC indicated more joint tenderness. TJC is the number of tender and painful joints determined for each participant by examination of 68 joints. Joints were assessed by pressure and joint manipulation on physical examination. Participants were asked for pain sensations on these manipulations and watched for spontaneous pain reactions. Any positive response on pressure, movement, or both was translated into a single tender-versus-nontender dichotomy. LS mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Swollen Joint Counts (SJC)
SJC is calculated based on swelling response of 66 joints. SJC possible values range from 0 to 66. A lower SJC indicated less joint swelling. A higher SJC indicated more joint swelling. SJC is the number of swollen joints determined for each participant by examination of 66 joints. Joints were classified as either swollen or not swollen. Swelling was defined as palpable fluctuating synovitis of the joint. LS mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Patient's Assessment of Pain VAS
The VAS is an instrument used to measure a person's subjective quantitative evaluation of an item such as pain intensity. The VAS contains a continuous line between two end points whereby the respondent places a mark on the line to indicate his or her response. In this study, participants scored their pain intensity in the most affected joint of the gout flare on a 0 100 mm VAS. The scale ranged from 0 (no pain) to 100 (unbearable pain). The scores were measured to the nearest millimeter from the left. LS mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Patient's Global Assessment of Disease Severity (PatGA) VAS
Participants scored their overall assessment of their PsA activity on a 0 to 100 mm horizontal VAS. The scale ranged from 0 (no disease activity) to 100 (extremely active disease activity). The scores were measured to the nearest millimeter from the left. LS mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Physician's Global Assessment of Disease Activity VAS
The investigator was asked to give an overall assessment of the severity of the participant's current PsA activity using a 0 to 100 mm horizontal VAS. The scale ranged from 0 no disease activity to 100 extremely active disease activity. The scores were measured to the nearest millimeter from the left. Least Square (LS) mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: Baseline, 24 Weeks
Change From Baseline in C-Reactive Protein (CRP)
CRP milligram/liter (mg/L) was measured with a high sensitivity assay at a central laboratory to assess acute phase reactant. LS mean was calculated using Mixed Model Repeated Measurements (MMRM) analysis with treatment, baseline, geographic region, baseline conventional disease modifying anti-rheumatic drugs (cDMARD) experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Change From Baseline in Leeds Enthesitis Index (LEI)
The LEI was developed specifically for use in PsA. It measures enthesitis at 6 sites (lateral epicondyle, left and right; medial femoral condyle, left and right; Achilles tendon insertion, left and right). Each site was assigned a score of 0 (absent) or 1 (present); the results from each site were then added to produce a total score (range 0 to 6). LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, treatment by visit interaction.
Measured: Baseline, Week 24
Percentage of Participants Achieving Psoriasis Area and Severity Index 75%, 90%, 100% (PASI 75, 90, 100)
The PASI is an index that combines assessments of the extent of body-surface involvement in 4 anatomical regions (head, trunk, arms, and legs) and the severity of desquamation, erythema, and plaque induration/infiltration (thickness) in each region, yielding an overall score of 0 for no psoriasis to 72 for the most severe disease. Participants achieving PASI 75 were defined as having an improvement of at least 75% in the PASI compared to their baseline measures. Participants achieving PASI 90 were defined as having an improvement of ≥90% in the PASI score compared to baseline. Participants achieving PASI 100 were defined as having an improvement of 100% in the PASI score compared to baseline.
Measured: Week 24
Change From Baseline in Itching Severity Using the Itch NRS
The Itch NRS is a participant-administered, 11-point horizontal scale anchored at 0 and 10, with 0 representing "no itch" and 10 representing "worst itch imaginable." Overall severity of a participant's itching from psoriasis was indicated by circling the number that best described the worst level of itching in the past 24 hours. LS mean was calculated using MMRM analysis with treatment, baseline score, geographic region, baseline cDMARD experience, visit, and treatment-by-visit interaction.
Measured: Baseline, Week 24
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Sep 2012 (estimated)
- Study startDec 2012
- Primary completionDec 2014
- Study completionSep 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (18)Papers the sponsor has linked to this study.
- Other trials for Psoriasis, ArthriticStudies of the same condition, open and under way.
- More trials run by Eli Lilly and CompanyThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 417 participants (actual)
Sponsor and investigators
- Lead sponsor
- Eli Lilly and Company
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- 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), Study director, Eli Lilly and Company
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01695239
- Sponsor's protocol ID
- 13731
- Other IDs
- I1F-MC-RHAP
- Acronym
- SPIRIT-P1
- Status last verified
- Dec 2018
- First submitted
- 25 Sep 2012
- Last updated
- 8 Jan 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Publications
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.
PubMed 40014255Tillett 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.
PubMed 38955921Armstrong 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.
PubMed 38814433Kameda 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.
PubMed 37858007Coates 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.
PubMed 36171019Eder 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.
PubMed 35397092Deodhar 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.
PubMed 35393269Combe 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.
PubMed 33499913Schweikert 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.
PubMed 32792421Chandran 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.
PubMed 32031665Combe 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.
PubMed 31964419Tillett 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.
PubMed 31154634Coates 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.
PubMed 30886974Gladman 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.
PubMed 30696483Gottlieb AB, Strand V, Kishimoto M, Mease P, Thaci D, Birt J, Lee CH, Shuler CL, Lin CY, Gladman DD. Ixekizumab improves patient-reported outcomes up to 52 weeks in bDMARD-naive patients with active psoriatic arthritis (SPIRIT-P1). Rheumatology (Oxford). 2018 Oct 1;57(10):1777-1788. doi: 10.1093/rheumatology/key161.
PubMed 29945203
Study at a glance
From the registry record, last updated by the sponsor on 8 Jan 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- 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
- ClinicalTrials.gov ID
- NCT01695239
- Acronym / sponsor ID
- SPIRIT-P1 / 13731
- Conditions
- Psoriasis, Arthritic
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 417 participants (actual)
- Lead sponsor
- Eli Lilly and CompanyIndustry (pharma, biotech, devices)
- Study start
- Dec 2012
- Primary completion
- Dec 2014 (actual)
- Study completion
- Sep 2017 (actual)
- First posted
- 27 Sep 2012 (estimated)
- Results
- Posted 27 Oct 2016
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will assess the safety and efficacy of ixekizumab (LY2439821) compared to placebo in participants with active psoriatic arthritis.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Ixekizumab Q2W | Experimental | Drug: IxekizumabAdministered by 80 milligram (mg) subcutaneous (SC) injection every 2 weeks (Q2W). |
| Ixekizumab Q4W | Experimental | Drug: IxekizumabAdministered by 80 mg SC injection every 4 weeks (Q4W). |
| Placebo | Placebo comparator | Drug: PlaceboPlacebo for ixekizumab and placebo for adalimumab administered by SC injection. |
| Adalimumab Q2W | Active comparator | Drug: AdalimumabAdministered by 40 mg SC injection Q2W. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- 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
Key exclusion criteria (8 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| IxekizumabAlso: LY2439821Administered SC | Drug | Ixekizumab Q2W, Ixekizumab Q4W |
| PlaceboAdministered SC | Drug | Placebo |
| AdalimumabAdministered SC | Drug | Adalimumab Q2W |
Primary outcome
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])
Time frame: Week 24
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).
30 secondary outcomes
Percentage of Participants Achieving ACR20 Response
Time frame: Week 12
Percentage of Participants Achieving American College of Rheumatology 50 (ACR50) Response
Time frame: Week 24
Percentage of Participants Achieving American College of Rheumatology 70 (ACR70) Score
Time frame: 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])
Time frame: 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])
Time frame: Baseline, Week 24
Percentage of Participants Achieving Psoriasis Area and Severity Index 75%, 90%, 100% (PASI 75, 90, 100)
Time frame: Week 12
Change From Baseline in Leeds Enthesitis Index (LEI)
Time frame: Baseline, Week 12
Change From Baseline in Itching Severity Using the Itch Numeric Rating Scale (NRS) (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
Time frame: Baseline, Week 12
Change From Baseline in Fatigue Severity NRS Score (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
Time frame: Baseline, Week 24
Change From Baseline in Joint Space Narrowing Score (JSN) And Bone Erosion Score (BES)
Time frame: Baseline, Week 24
Change From Baseline in Medical Outcomes Study 36-item Short Form Health Survey (SF-36): Physical Component Summary (PCS) and Mental Component Summary (MCS) (Quality of Life and Outcome Assessments Measures: Participant Reported Outcomes [PRO])
Time frame: Baseline, Week 24
Change From Baseline in Quick Inventory of Depressive Symptomatology-Self Reported 16 Items (QIDS-SR16) (Quality of Life and Outcome Assessments. Measures: Patient Reported Outcomes [PRO])
Time frame: Baseline, Week 24
Change From Baseline in Disease Activity Score (28 Diarthrodial Joint Count) Based on C-ReactiveProtein (DAS28-CRP) Measure: Non-Arthritic Disease
Time frame: Baseline, Week 24
Percentage of Participants Meeting the Psoriatic Arthritis Response Criteria (PsARC Modified)
Time frame: Week 24
Percentage of Participants Achieving Static Physician Global Assessment (sPGA) of 0 or 1 and With at Least a 2-point Improvement From Baseline
Time frame: Week 24
Percent Change From Baseline in Body Surface Area (BSA)
Time frame: Baseline, Week 24
Change From Baseline in the Nail Psoriasis Severity Index (NAPSI) Score Fingernail Involvement at Baseline
Time frame: Baseline, Week 24
Change From Baseline in Leeds Dactylitis Index-Basic (LDI-B)
Time frame: Baseline, Week 24
Change From Baseline in in the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI)
Time frame: Baseline, Week 24
Number of Participants With Treatment Emergent Anti-Ixekizumab Antibodies (TE-ADA) and Neutralizing Antibodies (NAb)
Time frame: Baseline to Week 24
Percent Change in American College of Rheumatology-N (ACR-N) Score
Time frame: Baseline, 24 Weeks
Change From Baseline in Tender Joint Counts (TJC)
Time frame: Baseline, Week 24
Change From Baseline in Swollen Joint Counts (SJC)
Time frame: Baseline, Week 24
Change From Baseline in Patient's Assessment of Pain VAS
Time frame: Baseline, Week 24
Change From Baseline in Patient's Global Assessment of Disease Severity (PatGA) VAS
Time frame: Baseline, Week 24
Change From Baseline in Physician's Global Assessment of Disease Activity VAS
Time frame: Baseline, 24 Weeks
Change From Baseline in C-Reactive Protein (CRP)
Time frame: Baseline, Week 24
Change From Baseline in Leeds Enthesitis Index (LEI)
Time frame: Baseline, Week 24
Percentage of Participants Achieving Psoriasis Area and Severity Index 75%, 90%, 100% (PASI 75, 90, 100)
Time frame: Week 24
Change From Baseline in Itching Severity Using the Itch NRS
Time frame: Baseline, Week 24
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Jan 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 40014255Kristensen 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.
- Derived from this study: PubMed 38955921Tillett 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.
- Derived from this study: PubMed 38814433Armstrong 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.
- Derived from this study: PubMed 37858007Kameda 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.
- Derived from this study: PubMed 36171019Coates 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.
- Derived from this study: PubMed 35397092Eder 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.
- Derived from this study: PubMed 35393269Deodhar 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.
- Derived from this study: PubMed 33499913Combe 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.
- Derived from this study: PubMed 32792421Schweikert 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.
- Derived from this study: PubMed 32031665Chandran 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.
- Derived from this study: PubMed 31964419Combe 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.
- Derived from this study: PubMed 31154634Tillett 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.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
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) study director
Eli Lilly and Company
116 sites in 15 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Ixekizumab and Adalimumab in people with Psoriasis, Arthritic, run by Eli Lilly and Company at 116 sites in 15 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 8 Jan 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 116 sites in United States, Ukraine, Poland, Spain, United Kingdom and 10 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 27 Oct 2016). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
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]) (time frame: Week 24). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01695239, which also lists 18 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jan 2019.