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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01172938
Other study ID # CC-10004-PSA-002
Secondary ID
Status Completed
Phase Phase 3
First received
Last updated
Start date June 2, 2010
Est. completion date October 27, 2016

Study information

Verified date June 2020
Source Amgen
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this study is to determine whether apremilast is safe and effective in the treatment of patients with psoriatic arthritis, specifically in improving signs and symptoms of psoriatic arthritis (tender and swollen joints, pain, physical function) in treated patients.


Description:

Psoriatic arthritis (PsA) is an inflammatory arthritis that occurs in 6-39% of psoriasis patients. The immunopathogenesis of PsA, which mirrors but is not identical to that seen in psoriatic plaques, reflects a complex interaction among resident dendritic, fibroblastic and endothelial cells, and inflammatory cells attracted to the synovium by cytokines and chemokines. Apremilast (CC-10004) is a novel oral agent that modulates multiple inflammatory pathways through targeted phosphodiesterase type 4 (PDE4) enzyme inhibition. Therefore, apremilast has the potential to be effective in the treatment of PsA.


Recruitment information / eligibility

Status Completed
Enrollment 504
Est. completion date October 27, 2016
Est. primary completion date April 27, 2012
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Males or females, aged = 18 years at time of consent.

- Have a diagnosis of Psoriatic Arthritis (PSA, by any criteria) of = 6 months duration.

- Meet the Classification Criteria for Psoriatic Arthritis (CASPAR) at time of screening.

- Must have been inadequately treated by disease-modifying antirheumatic drugs (DMARDs)

- May not have axial involvement alone

- Concurrent treatment allowed with methotrexate, leflunomide, or sulfasalazine

- Have = 3 swollen AND = 3 tender joints.

- Males & Females must use contraception

- Stable dose of nonsteroidal anti-inflammatory drugs (NSAIDs), narcotics and low dose oral corticosteroids allowed.

Exclusion Criteria:

- Pregnant or breast feeding.

- History of allergy to any component of the investigational product.

- Hepatitis B surface antigen and/or Hepatitis C antibody positive at screening.

- Therapeutic failure on > 3 agents for PsA or > 1 biologic tumor necrosis factor (TNF) blocker

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Apremilast 20mg
Apremilast 20 mg twice daily, orally
Apremilast 30mg
Apremilast 30 mg twice daily, orally
Placebo + 20 mg Apremilast
Placebo + 20 mg Apremilast
Placebo + 30 mg Apremilast
Placebo + 30 mg Apremilast

Locations

Country Name City State
Australia Eastern Health Clinical School Box Hill
Australia Monash Medical Centre Clayton Victoria
Australia Repatriation General Hospital Daws Park
Australia St Vincent's Hospital Melbourne Fitzroy
Australia Emeritus Research Malvern
Austria Medizinische Universitat Wien Vienna
Austria Ordination Wien Dr. Hanusch Vienna
Austria Kaiser-Franz-Josef Spital Wien
Canada Ultranova Skincare Barrie Ontario
Canada MAC Research Incorporated Hamilton Ontario
Canada K-W Musculoskeletal Research Inc. Kitchener Ontario
Canada Saint Josephs Healthcare System London Ontario
Canada Credit Valley Professional Building Mississauga Ontario
Canada Hospital Maisonneuve - Rosemont Montreal Quebec
Canada Institut de Rhumatologie de Montreal Montreal Quebec
Canada The Arthritis Program Research Group Inc. Newmarket Ontario
Canada Centre de Rhumatologie St-Louis Sainte Foy Quebec
Canada Saskatoon Osteoporosis Centre Saskatoon Saskatchewan
Canada Centre Hospitalier Universitaire de Sherbrooke-Hospital Fleurimont Sherbrooke Quebec
Canada Nexus Clinical Research St John's Newfoundland and Labrador
Canada St. Clare's Health Care Corporation of St. John's St John's Newfoundland and Labrador
Canada Toronto Western Hospital Toronto Ontario
Canada Probity Medical Research Inc Waterloo Ontario
Canada Jude Rodrigues Private Practice Windsor Ontario
France Ipros - Chr Orleans Orleans
France Hopital Purpan Toulouse Cedex
Germany Klinikum Duisburg, Wedau Kliniken Duisburg
Germany Friedrich-Alexander-Universiät Erlangen Nürnberg Erlangen
Germany Allgemeines Krankenhaus Eilbeck Hamburg
Germany Rheumazentrum Ruhrgebiet Herne
Germany Praxis Prof. Herbert Kellner München
Hungary Honvéd Kórház - Állami Egészségügyi Központ Budapest
Hungary Qualiclinic kft Budapest
Hungary Synexus Magyarország Kft. Budapest
Hungary MAV Korhaz es Rendelointezet Szolnok Szolnok
Hungary Veszprém Megyei Önkormányzat Csolnoky Ferenc Kórház-Rendelöintézet Veszprém
New Zealand P3 Research Crofton Downs
New Zealand Waikato hospital Hamilton
New Zealand Middlemore Clinical Trials New Zealand
New Zealand Queen Elizabeth Hospital for Rheumatic Disease Rotorua
New Zealand North Shore Hospital Takapuna
New Zealand Timaru Hospital Timaru
Poland Szpital Uniwersytecki im. Dr A.Jurasza Bydgoszcz
Poland Szpital Uniwersytecki nr 2 im. Dr Jana Biziela w Bydgoszczy Bydgoszcz
Poland Synexus SCM Sp. z o.o. Gdynia
Poland Synexus SCM Sp. z o.o. Katowice
Poland Wojewodzki Zespol Reumatologiczny Sopot
Poland Synexus SCM Sp. z o.o. Oddz. Warszawa Warszawa
Russian Federation Kemerovo State Medical Academy Kemerovo
Russian Federation Ryazan I.P. Pavlov State Medical University Ryazan
Russian Federation Departmental Hospital at Smolensk Station RZhD JSC Smolensk
Russian Federation Regional Clinical Hospital Vladimir
Russian Federation Voronezh Regional Clinical Hopsital #1, Voronezh State Medical Academy Voronezh
South Africa Groote Schuur Hospital Cape Town
South Africa Panorama Medical Centre Cape Town
South Africa Chelmsford Medical Centre 2 Durban
South Africa Clinresco Centres Pty Ltd Johannesburg
South Africa The Park Pinelands
Spain Hospital General Universitario Gregorio Maranon Madrid
Spain Hospital Universitario La Paz Madrid
Spain Hospital Universitario Marques de Valdecilla Santander
Spain Hospital Clinico Universitario de Santiago Santiago de Compostela
United Kingdom Barnsley Hospital Barnsley South Yorkshire
United Kingdom Colchester General Hospital Colchester
United Kingdom West Suffolk Hospital Edmunds
United States Arthritis and Rheumatic Disease Specialties Aventura Florida
United States Achieve Clinical Research LLC Birmingham Alabama
United States Sonora Clinical Research, LLC Boise Idaho
United States Coeur D'Alene Arthritis Clinic Coeur d'Alene Idaho
United States Dermatology Treatment and Research Center Dallas Texas
United States Altoona Center for Clinical Research Duncansville Pennsylvania
United States Physicians East Greenville North Carolina
United States Accurate Clinical Research Inc Houston Texas
United States North Florida Dermatology Jacksonville Florida
United States UCSD-Thornton Hospital La Jolla California
United States Justus Fiechtner MD PC Lansing Michigan
United States Arthritis and Osteoporosis Associates LLP Lubbock Texas
United States St. Francis Hospital and Health Centers Michigan City Indiana
United States Carolina Bone and Joint Monroe North Carolina
United States Health Research of Oklahoma Oklahoma City Oklahoma
United States Stanford University Medical Center Palo Alto California
United States Arizona Research Center Phoenix Arizona
United States University of Utah Salt Lake City Utah
United States Seattle Rheumatology Associates Seattle Washington
United States Arthritis Northwest Rheumatology Spokane Washington
United States The Arthritis Center Springfield Illinois
United States Tampa Medical Group Pa Tampa Florida
United States Inland Rheumatology Clinical Trials Upland California
United States Center for Clinical Studies Webster Texas
United States Clinical Research Center of Reading, LLP West Reading Pennsylvania
United States The Center for Rheumatology and Bone Research Wheaton Maryland
United States Piedmont Medical Research Associates Inc Winston-Salem North Carolina

Sponsors (1)

Lead Sponsor Collaborator
Amgen

Countries where clinical trial is conducted

United States,  Australia,  Austria,  Canada,  France,  Germany,  Hungary,  New Zealand,  Poland,  Russian Federation,  South Africa,  Spain,  United Kingdom, 

References & Publications (1)

Kavanaugh A, Mease PJ, Gomez-Reino JJ, Adebajo AO, Wollenhaupt J, Gladman DD, Hochfeld M, Teng LL, Schett G, Lespessailles E, Hall S. Longterm (52-week) results of a phase III randomized, controlled trial of apremilast in patients with psoriatic arthritis — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Percentage of Participants With an American College of Rheumatology 20% (ACR20) Response at Week 16 Percentage of participants with an American College of Rheumatology 20% (ACR20) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 20% improvement in 78 tender joint count; • = 20% improvement in 76 swollen joint count; and • = 20% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and Week 16
Secondary Change From Baseline in Health Assessment Questionnaire- Disability Index (HAQ-DI) at Week 16 The Health Assessment Questionnaire - Disability Index is a patient-reported questionnaire consisting of 20 questions referring to eight domains: dressing/grooming, arising, eating, walking, hygiene, reach, grip, and usual activities. Participants assessed their ability to do each task over the past week using the following response categories: without any difficulty (0); with some difficulty (1); with much difficulty (2); and unable to do (3). Scores on each task are summed and averaged to provide an overall score ranging from 0 to 3, where zero represents no disability and three very severe, high-dependency disability. Negative mean changes from Baseline in the overall score indicate improvement in functional ability. Baseline and Week 16
Secondary Percentage of Participants With an ACR 20 Response at Week 24 Percentage of participants with an American College of Rheumatology 20% (ACR20) response at Week 24. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 20% improvement in 78 tender joint count; • = 20% improvement in 76 swollen joint count; and • = 20% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and Week 24
Secondary Change From Baseline in Health Assessment Questionnaire- Disability Index (HAQ-DI) at Week 24 The Health Assessment Questionnaire - Disability Index is a patient-reported questionnaire consisting of 20 questions referring to eight domains: dressing/grooming, arising, eating, walking, hygiene, reach, grip, and usual activities. Participants assessed their ability to do each task over the past week using the following response categories: without any difficulty (0); with some difficulty (1); with much difficulty (2); and unable to do (3). Scores on each task are summed and averaged to provide an overall score ranging from 0 to 3, where zero represents no disability and three very severe, high-dependency disability. Negative mean changes from Baseline in the overall score indicate improvement in functional ability. Baseline and Week 24
Secondary Change From Baseline in 36-item Short Form Health Survey (SF-36) Physical Functioning Domain at Week 16 The Medical Outcome Study Short Form 36-Item Health Survey, Version 2 (SF-36) is a self-administered instrument that measures the impact of disease on overall quality of life and consists of 36 questions in eight domains (physical function, pain, general and mental health, vitality, social function, physical and emotional health). Norm-based scores were used in analyses, calibrated so that 50 is the average score and the standard deviation equals 10. Higher scores indicate a higher level of functioning. The physical functioning domain assesses limitations in physical activities because of health problems. A positive change from Baseline score indicates an improvement. Baseline and Week 16
Secondary Percentage of Participants With a Modified Psoriatic Arthritis Response Criteria (PsARC) Response at Week 16 Modified PsARC response is defined as improvement in at least 2 of the 4 measures, at least one of which must be tender joint count or swollen joint count, and no worsening in any of the 4 measures: • 78 tender joint count, • 76 swollen joint count, • Patient global assessment of disease activity, measured on a 100 mm visual Analog scale (VAS), where 0 mm = lowest disease activity and 100 mm = highest; • Physician global assessment of disease activity, measured on a 100 mm VAS, where 0 mm = lowest disease activity and 100 mm = highest. Improvement or worsening in joint counts is defined as decrease or increase, respectively, from Baseline by = 30%, and improvement or worsening in global assessments is defined as decrease or increase, respectively, from Baseline by = 20 mm VAS. Baseline and Week 16
Secondary Change From Baseline in Patient's Assessment of Pain at Week 16 The participant was asked to place a vertical line on a 100-mm visual analog scale on which the left-hand boundary (score = 0 mm) represents "no pain," and the right-hand boundary (score = 100 mm) represents "pain as severe as can be imagined." The distance from the mark to the left-hand boundary was recorded in millimeters. Baseline and Week 16
Secondary Change From Baseline in Maastricht Ankylosing Spondylitis Entheses Score (MASES) at Week 16 The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Baseline and Week 16
Secondary Change From Baseline in Dactylitis Severity Score at Week 16 Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet will be rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Baseline and Week 16
Secondary Change From Baseline in Clinical Disease Activity Index (CDAI) at Week 16 The Clinical Disease Activity Index (CDAI) is a composite index that is calculated as the sum of the: • 28 tender joint count (TJC), • 28 swollen joint count (SJC), • Patient's Global Assessment of Disease Activity measured on a 10 cm visual analog scale (VAS), where 0 cm = lowest disease activity and 10 cm = highest; • Physician's Global Assessment of Disease Activity -measured on a 10 cm VAS, where 0 cm = lowest disease activity and 10 cm = highest. The CDAI score ranges from 0 to 76 where lower scores indicate less disease activity. The following thresholds of disease activity have been defined for the CDAI: Remission: = 2.8 Low Disease Activity: > 2.8 and = 10 Moderate Disease Activity: > 10 and = 22 High Disease Activity: > 22. Baseline and Week 16
Secondary Change From Baseline in the Disease Activity Score (DAS28) at Week 16 The DAS28 measures the severity of disease at a specific time and is derived from the following variables: • 28 tender joint count • 28 swollen joint count, which do not include the distal interphalangeal (DIP) joints, the hip joint, or the joints below the knee; • C-reactive protein (CRP) • Patient's global assessment of disease activity. DAS28(CRP) scores range from 0 to approximately 10, with the upper bound dependent on the highest possible level of CRP. A DAS28 score higher than 5.1 indicates high disease activity, a DAS28 score less than 3.2 indicates low disease activity, and a DAS28 score less than 2.6 indicates clinical remission. Baseline and Week 16
Secondary Change From Baseline in the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fatigue) Score at Week 16 The FACIT-Fatigue scale is a 13-item self-administered questionnaire that assesses both the physical and functional consequences of fatigue. Each question is answered on a 5-point scale, where 0 means "not at all," and 4 means "very much." The FACIT-Fatigue scale score ranges from 0 to 52, with higher scores denoting lower levels of fatigue. A positive change from Baseline score indicates an improvement. Baseline and Week 16
Secondary Change From Baseline in SF-36 Physical Function at Week 24 The Medical Outcome Study Short Form 36-Item Health Survey, Version 2 (SF-36) is a self-administered instrument that measures the impact of disease on overall quality of life and consists of 36 questions in eight domains (physical function, pain, general and mental health, vitality, social function, physical and emotional health). Norm-based scores were used in analyses, calibrated so that 50 is the average score and the standard deviation equals 10. Higher scores indicate a higher level of functioning. The physical functioning domain assesses limitations in physical activities because of health problems. A positive change from Baseline score indicates an improvement. Baseline and Week 24
Secondary Percentage of Participants With a Modified Psoriatic Arthritis Response Criteria (PsARC) Response at Week 24 Modified PsARC response is defined as improvement in at least 2 of the 4 measures, at least one of which must be tender joint count or swollen joint count, and no worsening in any of the 4 measures: •78 tender joint count, •76 swollen joint count, •Patient global assessment of disease activity, measured on a 100 mm visual Analog scale (VAS), where 0 mm = lowest disease activity and 100 mm = highest; •Physician global assessment of disease activity, measured on a 100 mm VAS, where 0 mm = lowest disease activity and 100 mm = highest. Improvement or worsening in joint counts is defined as decrease or increase, respectively, from baseline by = 30%, and improvement or worsening in global assessments is defined as decrease or increase, respectively, from baseline by = 20 mm VAS. Baseline and Week 24
Secondary Change From Baseline in Patient's Assessment of Pain at Week 24 The participant was asked to place a vertical line on a 100-mm visual analog scale on which the left-hand boundary (score = 0 mm) represents "no pain," and the right-hand boundary (score = 100 mm) represents "pain as severe as can be imagined." The distance from the mark to the left-hand boundary was recorded in millimeters. Baseline and Week 24
Secondary Change From Baseline in Maastricht Ankylosing Spondylitis Entheses Score (MASES) at Week 24 The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Baseline and Week 24
Secondary Change From Baseline in Dactylitis Severity Score at Week 24 Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet will be rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Baseline and Week 24
Secondary Change From Baseline in Clinical Disease Activity Index (CDAI) at Week 24 The Clinical Disease Activity Index (CDAI) is a composite index that is calculated as the sum of the: • 28 tender joint count (TJC), • 28 swollen joint count (SJC), • Patient's Global Assessment of Disease Activity measured on a 10 cm visual analog scale (VAS), where 0 cm = lowest disease activity and 10 cm = highest; • Physician's Global Assessment of Disease Activity -measured on a 10 cm VAS, where 0 cm = lowest disease activity and 10 cm = highest. The CDAI score ranges from 0-76 where lower scores indicate less disease activity. The following thresholds of disease activity have been defined for the CDAI: Remission: = 2.8; Low Disease Activity: > 2.8 and = 10; Moderate Disease Activity: > 10 and = 22; High Disease Activity: > 22. Baseline and Week 24
Secondary Change From Baseline in the Disease Activity Score (DAS28) at Week 24 The DAS28 measures the severity of disease at a specific time and is derived from the following variables: • 28 tender joint count • 28 swollen joint count, which do not include the DIP joints, the hip joint, or the joints below the knee; • C-reactive protein (CRP) • Patient's global assessment of disease activity. DAS28(CRP) scores range from 0 to approximately 10, with the upper bound dependent on the highest possible level of CRP. A DAS28 score higher than 5.1 indicates high disease activity, a DAS28 score less than 3.2 indicates low disease activity, and a DAS28 score less than 2.6 indicates clinical remission. Baseline and Week 24
Secondary Change From Baseline in the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fatigue) Score at Week 24 The FACIT-Fatigue scale is a 13-item self-administered questionnaire that assesses both the physical and functional consequences of fatigue. Each question is answered on a 5-point scale, where 0 means "not at all," and 4 means "very much." The FACIT-Fatigue scale score ranges from 0 to 52, with higher scores denoting lower levels of fatigue. A positive change from Baseline score indicates an improvement. Baseline and Week 24
Secondary Percentage of Participants With MASES Improvement = 20% at Week 16 Percentage of participants with pre-existing enthesopathy whose MASES improved by = 20% from Baseline after 16 weeks of treatment. The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Baseline and Week 16
Secondary Percentage of Participants With Dactylitis Improvement = 1 Point at Week 16 Percentage of participants with pre-existing dactylitis whose dactylitis severity score improved by = 1 after 16 weeks of treatment. Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet was rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Baseline and Week 16
Secondary Percentage of Participants With Good or Moderate European League Against Rheumatism (EULAR) Response at Week 16 A EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2. A Moderate Response is defined as either: • an improvement (decrease) in the DAS28 of greater than 0.6 and less than or equal to 1.2 and attainment of a DAS28 score of less than or equal to 5.1 or, • an improvement (decrease) in the DAS28 of more than 1.2 and attainment of a DAS28 score of greater than 3.2. Baseline and Week 16
Secondary Percentage of Participants With MASES Improvement = 20% at Week 24 Percentage of participants with pre-existing enthesopathy whose MASES improved by = 20% from Baseline after 24 weeks of treatment. The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Baseline and Week 24
Secondary Percentage of Participants With Dactylitis Improvement = 1 Point at Week 24 Percentage of participants with pre-existing dactylitis whose dactylitis severity score improved by = 1 after 24 weeks of treatment. Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet was rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Baseline and Week 24
Secondary Percentage of Participants With Good or Moderate EULAR Response at Week 24 EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2. A Moderate Response is defined as either: • an improvement (decrease) in the DAS28 of greater than 0.6 and less than or equal to 1.2 and attainment of a DAS28 score of less than or equal to 5.1 or, • an improvement (decrease) in the DAS28 of more than 1.2 and attainment of a DAS28 score of greater than 3.2. Baseline and Week 24
Secondary Percentage of Participants With a ACR 50 Response at Week 16 Percentage of participants with an American College of Rheumatology 50% (ACR50) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 50% improvement in 78 tender joint count; • = 50% improvement in 76 swollen joint count; and • = 50% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and Week 16
Secondary Percentage of Participants With an ACR 70 Response at Week 16 Percentage of participants with an American College of Rheumatology 70% (ACR70) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 70% improvement in 78 tender joint count; • = 70% improvement in 76 swollen joint count; and • = 70% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and Week 16
Secondary Percentage of Participants With an ACR 50 Response at Week 24 Percentage of participants with an American College of Rheumatology 50% (ACR50) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 50% improvement in 78 tender joint count; • = 50% improvement in 76 swollen joint count; and • = 50% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and Week 24
Secondary Percentage of Participants With a ACR 70 Response at Week 24 Percentage of participants with an American College of Rheumatology 70% (ACR70) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 70% improvement in 78 tender joint count; • = 70% improvement in 76 swollen joint count; and • = 70% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and week 24
Secondary Percentage of Participants Achieving a MASES Score of Zero at Week 16 Percentage of participants with pre-existing enthesopathy whose MASES improves to 0 after 16 weeks of treatment. The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Week 16
Secondary Percentage of Participants Achieving a Dactylitis Score of Zero at Week 16 Percentage of participants with pre-existing dactylitis whose dactylitis severity score improves to zero after 16 weeks of treatment. Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet was rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Week 16
Secondary Percentage of Participants Achieving a MASES Score of Zero at Week 24 Percentage of participants with pre-existing enthesopathy whose MASES improves to 0 after 24 weeks of treatment. The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Week 24
Secondary Percentage of Participants Achieving a Dactylitis Score of Zero at Week 24 Percentage of participants with pre-existing dactylitis whose dactylitis severity score improves to zero after 24 weeks of treatment. Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet was rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Week 24
Secondary Percentage of Participants With a ACR 20 Response at Week 52 Percentage of participants with an American College of Rheumatology 20% (ACR20) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 20% improvement in 78 tender joint count; • = 20% improvement in 76 swollen joint count; and • = 20% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Baseline and Week 52
Secondary Change From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) at Week 52 The Health Assessment Questionnaire - Disability Index is a patient-reported questionnaire consisting of 20 questions referring to eight domains: dressing/grooming, arising, eating, walking, hygiene, reach, grip, and usual activities. Participants assessed their ability to do each task over the past week using the following response categories: without any difficulty (0); with some difficulty (1); with much difficulty (2); and unable to do (3). Scores on each task are summed and averaged to provide an overall score ranging from 0 to 3, where zero represents no disability and three very severe, high-dependency disability. Negative mean changes from Baseline in the overall score indicate improvement in functional ability. Baseline and Week 52
Secondary Change From Baseline in the SF-36 Physical Functioning Domain at Week 52 The Medical Outcome Study Short Form 36-Item Health Survey, Version 2 (SF-36) is a self-administered instrument that measures the impact of disease on overall quality of life and consists of 36 questions in eight domains (physical function, pain, general and mental health, vitality, social function, physical and emotional health). Norm-based scores were used in analyses, calibrated so that 50 is the average score and the standard deviation equals 10. Higher scores indicate a higher level of functioning. The physical functioning domain assesses limitations in physical activities because of health problems. A positive change from Baseline score indicates an improvement. Baseline and Week 52
Secondary Percentage of Participants With a Modified PsARC Response at Week 52 Modified PsARC response is defined as improvement in at least 2 of the 4 measures, at least one of which must be tender joint count or swollen joint count, and no worsening in any of the 4 measures: • 78 tender joint count, • 76 swollen joint count, • Patient global assessment of disease activity, measured on a 100 mm visual Analog scale (VAS), where 0 mm = lowest disease activity and 100 mm = highest; • Physician global assessment of disease activity, measured on a 100 mm VAS, where 0 mm = lowest disease activity and 100 mm = highest. Improvement or worsening in joint counts is defined as decrease or increase, respectively, from Baseline by = 30%, and improvement or worsening in global assessments is defined as decrease or increase, respectively, from Baseline by = 20 mm VAS. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Baseline and Week 52
Secondary Change From Baseline in the Patient Assessment of Pain at Week 52 The participant was asked to place a vertical line on a 100-mm visual analog scale on which the left-hand boundary (score = 0 mm) represents "no pain," and the right-hand boundary (score = 100 mm) represents "pain as severe as can be imagined." The distance from the mark to the left-hand boundary was recorded in millimeters. Baseline and Week 52
Secondary Change From Baseline in Maastricht Ankylosing Spondylitis Entheses Score (MASES) at Week 52 The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Baseline and week 52
Secondary Change From Baseline in the Dactylitis Severity Score at Week 52 Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet will be rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Baseline and Week 52
Secondary Change From Baseline in the CDAI Score at Week 52 The Clinical Disease Activity Index (CDAI) is a composite index that is calculated as the sum of the: • 28 tender joint count (TJC), • 28 swollen joint count (SJC), • Patient's Global Assessment of Disease Activity measured on a 10 cm visual analog scale (VAS), where 0 cm = lowest disease activity and 10 cm = highest; • Physician's Global Assessment of Disease Activity -measured on a 10 cm VAS, where 0 cm = lowest disease activity and 10 cm = highest. The CDAI score ranges from 0-76 where lower scores indicate less disease activity. The following thresholds of disease activity have been defined for the CDAI: Remission: = 2.8 Low Disease Activity: > 2.8 and = 10 Moderate Disease Activity: > 10 and = 22 High Disease Activity: > 22. Baseline and Week 52
Secondary Change From Baseline in the DAS28 at Week 52 The DAS28 measures the severity of disease at a specific time and is derived from the following variables: • 28 tender joint count • 28 swollen joint count, which do not include the DIP joints, the hip joint, or the joints below the knee; • C-reactive protein (CRP) • Patient's global assessment of disease activity. DAS28(CRP) scores range from 0 to approximately 10, with the upper bound dependent on the highest possible level of CRP. A DAS28 score higher than 5.1 indicates high disease activity, a DAS28 score less than 3.2 indicates low disease activity, and a DAS28 score less than 2.6 indicates clinical remission. Baseline and Week 52
Secondary Change From Baseline in the FACIT-Fatigue Scale Score at Week 52 The FACIT-Fatigue scale is a 13-item self-administered questionnaire that assesses both the physical and functional consequences of fatigue. Each question is answered on a 5-point scale, where 0 means "not at all," and 4 means "very much." The FACIT-Fatigue scale score ranges from 0 to 52, with higher scores denoting lower levels of fatigue. A positive change from Baseline score indicates an improvement. Baseline and Week 52
Secondary Percentage of Participants With MASES Improvement = 20% at Week 52 Percentage of participants with pre-existing enthesopathy whose MASES improved by = 20% from Baseline after 52 weeks. The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Baseline and Week 52
Secondary Percentage of Participants With Dactylitis Improvement = 1 Point at Week 52 Percentage of participants with pre-existing dactylitis whose dactylitis severity score improved by = 1 after 52 weeks. Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet was rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Baseline and Week 52
Secondary Percentage of Participants Achieving Good or Moderate EULAR Response at Week 52 A EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2. A Moderate Response is defined as either: • an improvement (decrease) in the DAS28 of greater than 0.6 and less than or equal to 1.2 and attainment of a DAS28 score of less than or equal to 5.1 or, • an improvement (decrease) in the DAS28 of more than 1.2 and attainment of a DAS28 score of greater than 3.2. Baseline and Week 52
Secondary Percentage of Participants With an ACR 50 Response at Week 52 Percentage of participants with an American College of Rheumatology 50% (ACR50) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 50% improvement in 78 tender joint count; • = 50% improvement in 76 swollen joint count; and • = 50% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Baseline and Week 52
Secondary Percentage of Participants With an ACR 70 Response at Week 52 Percentage of participants with an American College of Rheumatology 70% (ACR70) response. A participant was a responder if the following 3 criteria for improvement from Baseline were met: • = 70% improvement in 78 tender joint count; • = 70% improvement in 76 swollen joint count; and • = 70% improvement in at least 3 of the 5 following parameters: ? Patient's assessment of pain (measured on a 100 mm visual analog scale [VAS]); ? Patient's global assessment of disease activity (measured on a 100 mm VAS); ? Physician's global assessment of disease activity (measured on a 100 mm VAS); ? Patient's self-assessment of physical function (Health Assessment Questionnaire - Disability Index (HAQ-DI)); ? C-Reactive Protein. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Baseline and Week 52
Secondary Percentage of Participants Achieving a MASES Score of Zero at Week 52 Percentage of participants with pre-existing enthesopathy whose MASES improves to 0 after 24 weeks. The Maastricht Ankylosing Spondylitis Enthesitis Score quantitates inflammation of the entheses (enthesitis) by assessing pain at the following entheses (sites where tendons or ligaments insert into the bone): 1st costochondral joints left/right; 7th costochondral joints left/right; posterior superior iliac spine left/right; anterior superior iliac spine left/right; iliac crest left/right; 5th lumbar spinous process; and the proximal insertion of the Archilles tendon left/right. The MASES, ranging from 0 to 13, is the number of painful entheses out of 13 entheses. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Week 52
Secondary Percentage of Participants Achieving a Dactylitis Score of Zero at Week 52 Percentage of participants with pre-existing dactylitis whose dactylitis severity score improves to zero after 52 weeks. Dactylitis is characterized by swelling of the entire finger or toe. Each digit on the hands and feet was rated as zero for no dactylitis or 1 for dactylitis present. The dactylitis severity score is the sum of the individual scores for each digit. The dactylitis severity score, ranging from 0 to 20, is the number of digits on the hands and feet with dactylitis present. Two-sided 95% confidence interval is based on the Clopper-Pearson method. Week 52
Secondary Number of Participants With Adverse Events During the Placebo-Controlled Period A Treatment Emergent Adverse Event (TEAE) is an AE with a start date on or after the date of the first dose of Investigational Product (IP). An AE is any noxious, unintended, or untoward medical occurrence, that may appear or worsen in a participant during the course of study. It may be a new intercurrent illness, a worsening concomitant illness, an injury, or any concomitant impairment of the participant's health, including laboratory test values regardless of etiology. Any worsening (ie, any clinically significant adverse change in the frequency or intensity of a preexisting condition) was considered an AE. A serious AE (SAE) is any untoward adverse event that is fatal, life-threatening, results in persistent or significant disability or incapacity, requires or prolongs existing in-patient hospitalization, is a congenital anomaly or birth defect, or a condition that may jeopardize the patient or may require intervention to prevent one of the outcomes listed above. Week 0 to Week 16 for placebo participants who entered early escape at Week 16 and up to Week 24 for all other participants (placebo participants who remained on placebo through week 24 and participants randomized to the APR 20 mg BID or APR 30 mg BID)
Secondary Number of Participants With Adverse Events During the Apremilast-Exposure Period A TEAE is an AE with a start date on or after the date of the first dose of Investigational Product (IP) and no later than 28 days after the last dose of IP. An AE is any noxious, unintended, or untoward medical occurrence, that may appear or worsen in a participant during the course of study. It may be a new intercurrent illness, a worsening concomitant illness, an injury, or any concomitant impairment of the participant's health, including laboratory test values regardless of etiology. Any worsening (ie, any clinically significant adverse change in the frequency or intensity of a preexisting condition) was considered an AE. A serious AE (SAE) is any untoward adverse event that is fatal, life-threatening, results in persistent or significant disability or incapacity, requires or prolongs existing in-patient hospitalization, is a congenital anomaly or birth defect, or a condition that may jeopardize the patient or may require intervention to prevent one of the outcomes listed above. Baseline to Week 260; median total exposure to Apremilast was 170 weeks
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