A Study of Abatacept in Patients With Active Ulcerative Colitis

March 4, 2015 updated by: Bristol-Myers Squibb

A Phase 3, Multi-Center, Randomized, Placebo-Controlled Study to Evaluate the Clinical Efficacy and Safety of Induction and Maintenance Therapy With Abatacept in Subjects With Active Ulcerative Colitis (UC) Who Have Had an Inadequate Clinical Response and/or Intolerance to Medical Therapy

The purpose of this clinical research study is to learn if abatacept can improve signs and symptoms of active ulcerative colitis in patients who have not had an adequate response to other therapies. The safety of this treatment will also be studied

Study Overview

Status

Completed

Conditions

Detailed Description

The Induction Period First Cohort (IP1C) arms (30/10 mg/kg and 10 mg/kg) were placebo-controlled arms that were used for the primary endpoint and its analysis. The Induction Period Second Cohort arms (IP2C 30/10 mg/kg and 10 mg/kg) were not placebo-controlled, their sole purpose being to provide sufficient numbers of participants for the maintenance phase. The first cohort (IP1C) was randomized to receive placebo or 1 of 3 doses of abatacept. Following completion of the IP1C randomization, a second cohort (IP2C) was randomized to receive 1 of 2 doses of abatacept. After all participants in the IP1C completed or discontinued, the data was locked and the formal analysis for the Induction Period primary endpoint was performed. Summary tables for the second cohort (IP2C) and the Maintenance and Open-label phases were generated from a second, subsequent data lock.

Study Type

Interventional

Enrollment (Actual)

591

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Australian Capital Territory
      • Garran, Australian Capital Territory, Australia, 2605
        • Local Institution
    • New South Wales
      • Camperdown, New South Wales, Australia, 2050
        • Local Institution
    • Queensland
      • Herston, Queensland, Australia, 4029
        • Local Institution
      • South Brisbane, Queensland, Australia, 4101
        • Local Institution
    • South Australia
      • Bedford Park, South Australia, Australia, 5042
        • Local Institution
    • Tasmania
      • Launceston, Tasmania, Australia, 7250
        • Local Institution
    • Victoria
      • Box Hill, Victoria, Australia, 3128
        • Local Institution
      • Fitzroy, Victoria, Australia, 3065 VIC
        • Local Institution
      • South Ballarat, Victoria, Australia, 3350
        • Local Institution
    • Western Australia
      • Fremantle, Western Australia, Australia, 6160
        • Local Institution
      • Bruxelles, Belgium, 1200
        • Local Institution
      • Leuven, Belgium, 3000
        • Local Institution
      • Rio De Janeiro, Brazil, 21941
        • Local Institution
      • Sao Paulo, Brazil, 01246
        • Local Institution
    • Bahia
      • Salvador, Bahia, Brazil, 42700
        • Local Institution
    • Goias
      • Goiania, Goias, Brazil, 74535
        • Local Institution
    • Parana
      • Curitiba, Parana, Brazil, 80060
        • Local Institution
    • Rio Grande Do Sul
      • Porto Alegre, Rio Grande Do Sul, Brazil, 90035
        • Local Institution
      • Porto Alegre, Rio Grande Do Sul, Brazil, 90610
        • Local Institution
    • Sao Paulo
      • Campinas, Sao Paulo, Brazil, 13070
        • Local Institution
      • Santo Andre - Sp, Sao Paulo, Brazil, 09060
        • Local Institution
      • Santos, Sao Paulo, Brazil, 11075
        • Local Institution
      • Quebec, Canada, G1L 3L5
        • Local Institution
    • British Columbia
      • Vancouver, British Columbia, Canada, V5Z 1H2
        • Local Institution
      • Vancouver, British Columbia, Canada, V6Z 2K5
        • Local Institution
    • Ontario
      • Kingston, Ontario, Canada, K7L 5G2
        • Local Institution
      • London, Ontario, Canada, N6A 5A5
        • Local Institution
      • Ottawa, Ontario, Canada, K1H 8L6
        • Local Institution
      • Toronto, Ontario, Canada, M5G 1X5
        • Local Institution
      • Toronto, Ontario, Canada, M3N 2V7
        • Local Institution
    • Quebec
      • Levis, Quebec, Canada, G6V 3Z1
        • Local Institution
      • Montreal, Quebec, Canada, H1T 2M4
        • Local Institution
      • Brno - Bohunice, Czech Republic, 625 00
        • Local Institution
      • Ceske Budejovice, Czech Republic, 370 87
        • Local Institution
      • Amiens Cedex 1, France, 80054
        • Local Institution
      • Clichy, France, 92110
        • Local Institution
      • Lille Cedex, France, 59037
        • Local Institution
      • Nice, France, 06200
        • Local Institution
      • Paris, France, 75475
        • Local Institution
      • Pessac, France, 33604
        • Local Institution
      • Toulouse, France, 31059
        • Local Institution
      • Kiel, Germany, 24105
        • Local Institution
      • Muenster, Germany, 48129
        • Local Institution
      • Muenster, Germany, 48159
        • Local Institution
      • Bangalore, India, 560034
        • Local Institution
      • Bangalore, India, 560017
        • Local Institution
      • Delhi, India, 110076
        • Local Institution
      • Hyderabad, India, 500058
        • Local Institution
      • Mangalore, India, 575001
        • Local Institution
      • Manipal, India, 576104
        • Local Institution
      • Mumbai, India, 400 029
        • Local Institution
      • Mumbai, India, 400 022
        • Local Institution
      • Mysore, India, 570004
        • Local Institution
    • Andhra Pradesh
      • Hyderabad, Andhra Pradesh, India, 500082
        • Local Institution
    • Kerala
      • Kochi, Kerala, India, 682304
        • Local Institution
    • Maharashtra
      • Mumbai, Maharashtra, India, 400020
        • Local Institution
      • Dublin, Ireland
        • Local Institution
    • Dublin
      • Dublin 9, Dublin, Ireland
        • Local Institution
      • Napoli, Italy, 80138
        • Local Institution
      • Padova, Italy, 35128
        • Local Institution
      • Roma, Italy, 00133
        • Local Institution
      • Roma, Italy, 00152
        • Local Institution
      • San Giovanni Rotondo, Italy, 71013
        • Local Institution
      • Seoul, Korea, Republic of, 120-752
        • Local Institution
      • Chihuahua, Mexico, 31238
        • Local Institution
    • Coahuila
      • Torreon, Coahuila, Mexico, 27250
        • Local Institution
    • Distrito Federal
      • Df, Distrito Federal, Mexico, 11560
        • Local Institution
      • Mexico, Distrito Federal, Mexico, 14080
        • Local Institution
      • Mexico, D. F., Distrito Federal, Mexico, 06726
        • Local Institution
    • Jalisco
      • Guadalajara, Jalisco, Mexico, 44160
        • Local Institution
      • Guadalajara, Jalisco, Mexico, 44340
        • Local Institution
      • Guadalajara, Jalisco, Mexico, 44200
        • Local Institution
      • Guadalajara, Jalisco, Mexico, 45050
        • Local Institution
      • Guadalajara, Jalisco, Mexico, 45200
        • Local Institution
    • Nuevo Leon
      • Monterrey, Nuevo Leon, Mexico, 64460
        • Local Institution
    • Sinaloa
      • Culiacan, Sinaloa, Mexico, 80230
        • Local Institution
    • Sonora
      • Hermosillo, Sonora, Mexico, 83280
        • Local Institution
      • Amersfoort, Netherlands, 3816 CP
        • Local Institution
      • Amsterdam, Netherlands, 1105 AZ
        • Local Institution
      • Groningen, Netherlands, 9700 RB
        • Local Institution
      • Katowice, Poland, 40-752
        • Local Institution
      • Warszawa, Poland, 02-781
        • Local Institution
      • Wroclaw, Poland, 50-326
        • Local Institution
      • Ponce, Puerto Rico, 00716
        • Local Institution
    • Gauteng
      • Parktown West, Gauteng, South Africa, 2193
        • Local Institution
      • Pretoria, Gauteng, South Africa, 0048
        • Local Institution
    • Kwa Zulu Natal
      • Overport, Kwa Zulu Natal, South Africa, 4091
        • Local Institution
    • Western Cape
      • Belville, Western Cape, South Africa, 7350
        • Local Institution
      • Panorama, Western Cape, South Africa, 7506
        • Local Institution
      • Bern, Switzerland, 3010
        • Local Institution
      • Zuerich, Switzerland, 8091
        • Local Institution
    • Greater London
      • London, Greater London, United Kingdom, E1 1BB
        • Local Institution
      • London, Greater London, United Kingdom, WC1E 6DB
        • Local Institution
    • Oxfordshire
      • Oxford, Oxfordshire, United Kingdom, OX 39DU
        • Local Institution
    • Alabama
      • Birmingham, Alabama, United States, 35294
        • University of Alabama at Birmingham
    • Arizona
      • Scottsdale, Arizona, United States, 85259
        • Mayo Clinic Arizona
    • California
      • Los Angeles, California, United States, 90048
        • Cedars-Sinai Medical Center
      • Sacramento, California, United States, 95825
        • The Permanente Medical Group, Inc
    • Colorado
      • Wheatridge, Colorado, United States, 80033
        • Western States Clinical Research Inc.
    • Connecticut
      • Torrington, Connecticut, United States, 06790
        • Litchfield County Gastroenterology Assoc.
    • Florida
      • Gainesville, Florida, United States, 32610
        • University of Florida
      • Jacksonville, Florida, United States, 32256
        • Borland-Groover Clinic
      • Miami, Florida, United States, 33143
        • Miami Research Associates
      • Winter Park, Florida, United States, 32789
        • Shafran Gasteroenterology Center
    • Georgia
      • Atlanta, Georgia, United States, 30342
        • Atlanta Gastroenterology Associates
    • Illinois
      • Chicago, Illinois, United States, 60612
        • Rush University Medical Center
      • Chicago, Illinois, United States, 60637
        • University of Chicago Hospitals
    • Kansas
      • Pratt, Kansas, United States, 67124
        • Health Science Center
    • Kentucky
      • Lexington, Kentucky, United States, 40536
        • University of Kentucky Chandler Medical Center
      • Louisville, Kentucky, United States, 40202
        • University of Louisville
    • Louisiana
      • Lafayette, Louisiana, United States, 70503
        • Gulf Coast Research
    • Massachusetts
      • Worcester, Massachusetts, United States, 01610
        • Clinical Pharmacology Study Group
    • Minnesota
      • Plymouth, Minnesota, United States, 55446
        • Minnesota Gastroenterology, P.A.
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic Rochester
    • Missouri
      • Kansas City, Missouri, United States, 64131
        • Kansas City Gastroenterology and Hepatology
      • Mexico, Missouri, United States, 65265
        • Center for Digestive & Liver Diseases, Inc.
    • New Jersey
      • Egg Harbor Twp, New Jersey, United States, 08234
        • AGA Clinical Research Associates, LLC
    • New York
      • Fishkill, New York, United States, 12524
        • Hudson Valley Medical Research Llc
      • Great Neck, New York, United States, 11021
        • Long Island Clinical Research
      • New York, New York, United States, 10029
        • Mount Sinai School of Medicine
      • Rochester, New York, United States, 14642
        • University of Rochester Medical Center
      • Rockville Centre, New York, United States, 11570
        • Good, Larry I.
      • Setauket, New York, United States, 11733
        • Gastrointestinal Resrch Assoc.
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599
        • University of North Carolina
      • Charlotte, North Carolina, United States, 28207
        • Charlotte Gastroenterology & Hepatology, PLLC
      • Wilmington, North Carolina, United States, 28401
        • Hanover Medical Specialists, P.A.
      • Winston Salem, North Carolina, United States, 27103
        • Piedmont Medical Research Associates
    • Ohio
      • Canton, Ohio, United States, 44718
        • Gastroenterology Specialists, Inc.
      • Cincinnati, Ohio, United States, 45219
        • Consultants For Clinical Research, Inc.
      • Dayton, Ohio, United States, 45415
        • Gastrointestinal & Liver Diseases Consultants
    • Oklahoma
      • Oklahoma City, Oklahoma, United States, 73104
        • Oklahoma Foundation for Digestive Research
      • Tulsa, Oklahoma, United States, 74104
        • Options Health Research, LLC
      • Tulsa, Oklahoma, United States, 74135
        • Healthcare Research Consultants
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Hospital of the University of Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15212
        • Allegheny Center for Digestive Health
    • South Carolina
      • Charleston, South Carolina, United States, 29425
        • Medical University of South Carolina
    • Tennessee
      • Germantown, Tennessee, United States, 38138
        • Memphis Gastroenterology Group
      • Germantown, Tennessee, United States, 38138
        • Gastroenterology Center of the Midsouth, P.C.
      • Nashville, Tennessee, United States, 37205
        • Nashville Medical Research
    • Texas
      • Austin, Texas, United States, 78705
        • Austin Gastroenterology, PA
      • San Antonio, Texas, United States, 78229
        • Gastroenterology Clinic of San Antonio
      • San Antonio, Texas, United States, 78215
        • Alamo Medical Research
    • Washington
      • Seattle, Washington, United States, 98101
        • Virginia Mason Medical Center
      • Tacoma, Washington, United States, 98405
        • Tacoma Digestive Disease Research Ctr.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Men or women 18 years or older
  • Ulcerative colitis for at lease 3 months
  • Moderate to severe active ulcerative colitis
  • Inadequate response or intolerance to standard ulcerative colitis treatment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Abatacept (ABA)

Induction Period; 3 arms for Cohort 1: ABA 30/~10 mg/kg (ABA administered at 30 mg/kg followed by ABA at ~10 mg/kg), ABA ~10 mg/kg, ABA 3 mg/kg

Induction Period; 2 arms for Cohort 2: ABA 30/~10 mg/kg and Second Cohort ABA ~10 mg/kg

1 arm for maintenance period (ABA ~10 mg/kg)

Dextrose 5% in water, IV. Placebo on days IP-1, IP-15,IP-29, IP-57; 3 mg/kg on days IP-1, IP-15,IP-29, IP-57; 10 mg/kg on days IP-1, IP-15,IP-29, IP-57; or 30 mg/kg on days IP-1,IP-15 and ~10 mg/kg on days IP-29, IP-57 (ABA 30/~10 mg/kg Group).

Induction Period 3 months

Maintenance Period 12 months

Other Names:
  • Orencia
  • BMS-188667
Placebo Comparator: Placebo

1 arm for induction period

1 arm for maintenance period

Normal saline, IV, 0 mg/kg, every 28 days.

Induction Period 3 months

Maintenance Period 12 months

Other: abatacept
1 arm for open-label extension phase (ABA ~10 mg/kg)

~10 mg/kg, once monthly

Open- Label Extension Period until the drug is marketed for UC or the UC development program for abatacept is discontinued

Other Names:
  • Orencia
  • BMS-188667

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Induction Period (IP); Number of Participants With Clinical Response (Per Mayo Score) at Week 12: IP Cohort 1 (IP1C)
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. A clinical response is defined as a reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with an accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point.
Week 12 (Day IP-85)
Maintenance Period (MP); Number of Participants With Clinical Response (Per Mayo Score) at Month 12
Time Frame: Month 12 (Day MP-365)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. A clinical response is defined as a reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with an accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point.
Month 12 (Day MP-365)
Open-Label Extension Period (OL); Number of Participants With Adverse Events (AEs), Related AEs, Deaths, Serious AEs (SAEs), Related SAEs, and AEs Leading to Discontinuation
Time Frame: Day OL-1 through the end of the OL
AE=any new untoward medical occurrence or worsening of a pre-existing medical condition which does not necessarily have a causal relationship with this treatment. Related AE=relationship of certain, probable, possible, or missing. SAE=any untoward medical occurrence that at any dose: results in death, is life-threatening, requires inpatient hospitalization or causes prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, results in development of drug dependency or drug abuse, is an important medical event.
Day OL-1 through the end of the OL
OL; Number of Participants With AEs of Special Interest
Time Frame: Day OL-1 through Day OL-729
AE=any new untoward medical occurrence or worsening of a pre-existing medical condition which does not necessarily have a causal relationship with this treatment. AEs of special interest are those AEs that may be associated with the use of immunomodulatory drugs, including all infections, serious infections, and opportunistic infections; autoimmune disorders; neoplasms; acute infusional AEs (pre-specified AEs occurring within 1 hour of start of infusion) and peri-infusional AEs (pre-specified AEs occurring within 24 hours of the start of infusion).
Day OL-1 through Day OL-729
OL; Number of Participants With Physical Examination Findings
Time Frame: Day OL-1 through Day OL-729
Complete physical examination was obtained at the Screening Visit, Day MP-365, and OL Final Visit/Early Termination visits. Interim physical examinations were performed at other study visits. Interim physical exam were not as comprehensive as the initial full examination but did note any changes in the participant's condition since the last assessment and did not preclude examination of any of the body systems as clinically indicated. Participants were observed for AEs and vital signs (blood pressure, heart rate, and temperature).
Day OL-1 through Day OL-729
OL; Number of Participants With Marked Hematology Laboratory Abnormalities
Time Frame: Day OL-1 through Day OL-729
High=greater than Upper Normal Limit (ULN), Low=lower than Lower Normal Limit (LLN). LLN/ULN= Hemoglobin (HGB): >3 g/dL decrease from Baseline (BL); Hematocrit: <0.75 x BL; Erythrocytes: <0.75 x BL; Platelets (PLT): <0.67 x LLN/>1.5 x ULN; Leukocytes: <0.75 x LLN/ >1.25 x ULN; neutrophils+bands: <1.0 x 10^3 c/uL; eosinophils: >0.750 x 10^3 c/uL; monocytes: >2000 mm3; lymphocytes: <0.750 x 10^3 c/uL/ >7.50 x 10^3 c/uL.
Day OL-1 through Day OL-729
OL; Number of Participants With Liver and Kidney Function and Electrolyte Laboratory Abnormalities
Time Frame: Day OL-1 through Day OL-729
Low=lower than LLN, High=greater than ULN. LLN/ULN= Alkaline phosphatase (ALP): >2 x ULN; aspartate aminotransferase (AST): >3 x ULN; alanine aminotransferase (ALT): >3 x ULN; G-Glutamyl transferase (GGT): >2 x ULN; Bilirubin: >2 x ULN; blood urea nitrogen (BUN): >2 x BL; creatinine: >4 x BL; potassium (K): <0.9 x LLN/ >1.1 x ULN; calcium (Ca): <0.8 x LLN/>1.2 x ULN; phosphorous (P): <0.75 x LLN/ >1.2 5 x ULN
Day OL-1 through Day OL-729
OL; Number of Participants With Chemistry and Urinalysis Laboratory Abnormalities
Time Frame: Day OL-1 through Day OL-729
Low=lower than LLN, High=greater than ULN. LLN/ULN= serum glucose (Glu): <65 mg/dL/ >220 mg/dL; fasting serum Glu: <0.8 x LLN/ >1.5 x ULN; total protein: < 0.9 x LLN/ >1.1 x ULN; albumin:<0.9 x LLN; uric acid: >1.5 x ULN. For Urinalysis (Urine protein, urine Glu, urine blood, leukocyte esterase, Red Blood Cells [RBCs], White Blood Cells [WBCs]): Use ≥2 when BL value missing or value ≥4, or when pre-dose=0 or 0.5. Use ≥3 when pre-dose=1. Use ≥4 when pre-dose=2 or 3
Day OL-1 through Day OL-729

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
IP; Baseline Mayo Score: IP1C
Time Frame: Baseline
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. A clinical response is defined as a reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with an accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point.
Baseline
IP; Number of Participants in Clinical Remission (Per Mayo Score) at Week 12: IP1C
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point.
Week 12 (Day IP-85)
IP; Number of Participants in Mucosal Healing (Per Mayo Score) at Week 12: IP1C
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Mucosal healing was defined as endoscopic subscore ≤ 1 point
Week 12 (Day IP-85)
IP; Number of Participants With Clinical Response (Per Mayo Score) at Week 12 Analyzed by Cochran-Armitage Trend Test for Dose-Response Relationship: IP1C
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. A clinical response is defined as a reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with an accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point.
Week 12 (Day IP-85)
IP; Baseline Inflammatory Bowel Disease Questionnaire (IBDQ) Score: IP1C
Time Frame: Baseline
The Inflammatory Bowel Disease Questionnaire (IBDQ) was used to measure disease specific quality of life. The IBDQ consists of a self-administered 32-item questionnaire that evaluates quality of life across 4 dimensional scores: Bowel, Systemic, Social and Emotional. The response to each question can range from 1 to 7, with 1 indicating severe problem and 7 indicating normal health. The total IBDQ is computed as the sum of the responses to the individual IBDQ questions. The total score can range between 32 to 224 with higher scores indicating a better quality of life.
Baseline
IP; Mean Change From Baseline To Week 12 in Inflammatory Bowel Disease Questionnaire (IBDQ): IP1C
Time Frame: Baseline (Day IP-1), Day IP-85 (Week 12)
The Inflammatory Bowel Disease Questionnaire (IBDQ) was used to measure disease specific quality of life. The IBDQ consists of a self-administered 32-item questionnaire that evaluates quality of life across 4 dimensional scores: Bowel, Systemic, Social and Emotional. The response to each question can range from 1 to 7, with 1 indicating severe problem and 7 indicating normal health. The total IBDQ is computed as the sum of the responses to the individual IBDQ questions. The total score can range between 32 to 224 with higher scores indicating a better quality of life.
Baseline (Day IP-1), Day IP-85 (Week 12)
IP; Number of Participants With Mayo Rectal Bleeding Subscores Indicating Mild Disease (≤1 Point) at Week 12: IP1C
Time Frame: Day IP-85 (Week 12)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. An absolute rectal bleeding subscore of ≤1 point was indicative of mild disease.
Day IP-85 (Week 12)
IP; Number of Participants With Mayo Stool Frequency Subscores Indicating Mild Disease (≤1 Point) at Week 12: IP1C
Time Frame: Day IP-85 (Week 12)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. An absolute stool frequency subscore of ≤1 point was indicative of mild disease.
Day IP-85 (Week 12)
IP; Number of Participants With Mayo Physician Global Assessment (PGA) Subscores Indicating Mild Disease (≤1 Point) at Week 12: IP1C
Time Frame: Day IP-85 (Week 12)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. An absolute PGA subscore of ≤1 point was indicative of mild disease.
Day IP-85 (Week 12)
IP; Number of Participants Who Are Anti-TNF-Inadequate Responders/Anti-TNF Intolerant With Clinical Response At Week 12 Analyzed by Cochran-Armitage Trend Test for Dose-Response Relationship: IP1C
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system (range 0-12 points, high scores=greater severity of disease) is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Clinical response=reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point. Inadequate response/intolerance=inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.
Week 12 (Day IP-85)
IP; Number of Participants With Clinical Response At Week 12 Among Participants With Anti-TNF (Infliximab) Failure/Intolerance: IP1C
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system (range 0-12 points, high scores=greater severity of disease) is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Clinical response=reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point. Inadequate response/intolerance=inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.
Week 12 (Day IP-85)
IP; Number of Participants in Clinical Remission at Week 12 Among Participants With Anti-TNF (Infliximab) Failure/Intolerance: IP1C
Time Frame: Week 12 (Day IP-85)

The Mayo Scoring system (range 0-12 points, high scores=greater severity of disease) is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point. Inadequate response/intolerance

=inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.

Week 12 (Day IP-85)
IP; Number of Participants in Mucosal Healing at Week 12 Among Participants With Anti-TNF (Infliximab) Failure/Intolerance: IP1C
Time Frame: Week 12 (Day IP-85)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Mucosal healing was defined as endoscopic subscore ≤ 1 point. Inadequate response/intolerance = inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.
Week 12 (Day IP-85)
IP; Number of Participants With Adverse Events (AEs), Related AEs, Deaths, Serious AEs (SAEs), Related SAEs, and AEs Leading to Discontinuation: IP1C + IP2C
Time Frame: Day IP-1 through Day IP-85
AE=any new untoward medical occurrence or worsening of a pre-existing medical condition which does not necessarily have a causal relationship with this treatment. Related AE=relationship of certain, probable, possible, or missing. SAE=any untoward medical occurrence that at any dose: results in death, is life-threatening, requires inpatient hospitalization or causes prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, results in development of drug dependency or drug abuse, is an important medical event.
Day IP-1 through Day IP-85
IP; Number of Participants With AEs Of Special Interest: IP1C + IP2C
Time Frame: Day IP-1 through Day IP-85
AE=any new untoward medical occurrence or worsening of a pre-existing medical condition which does not necessarily have a causal relationship with this treatment. AEs of special interest are those AEs that may be associated with the use of immunomodulatory drugs, including all infections, serious infections, and opportunistic infections; autoimmune disorders; neoplasms; acute infusional AEs (pre-specified AEs occurring within 1 hour of start of infusion) and peri-infusional AEs (pre-specified AEs occurring within 24 hours of the start of infusion).
Day IP-1 through Day IP-85
IP; Number of Participants With Physical Examination Findings: IP1C + IP2C
Time Frame: Day IP-1 through Day IP-85
Complete physical examination was obtained at the Screening Visit, Day MP-365, and OL Final Visit/Early Termination visits. Interim physical examinations were performed at other study visits. Interim physical exam were not as comprehensive as the initial full examination but did note any changes in the participant's condition since the last assessment and did not preclude examination of any of the body systems as clinically indicated. Participants were observed for AEs and vital signs (blood pressure, heart rate, and temperature).
Day IP-1 through Day IP-85
IP; Number of Participants With Marked Hematology Laboratory Abnormalities: IP1C
Time Frame: Day IP-1 through Day IP-85
High=greater than Upper Normal Limit (ULN), Low=lower than Lower Normal Limit (LLN). LLN/ULN= Hemoglobin (HGB): >3 g/dL decrease from Baseline (BL); Hematocrit: <0.75 x BL; Erythrocytes: <0.75 x BL; Platelets (PLT): <0.67 x LLN/>1.5 x ULN; Leukocytes: <0.75 x LLN/ >1.25 x ULN; neutrophils+bands: <1.0 x 10^3 c/uL; eosinophils: >0.750 x 10^3 c/uL; monocytes: >2000 mm3; lymphocytes: <0.750 x 10^3 c/uL/ >7.50 x 10^3 c/uL.
Day IP-1 through Day IP-85
IP; Number of Participants With Marked Liver and Kidney Function and Electrolyte Laboratory Abnormalities: IP1C
Time Frame: Day IP-1 through Day IP-85
Low=lower than LLN, High=greater than ULN. LLN/ULN= Alkaline phosphatase (ALP): >2 x ULN; aspartate aminotransferase (AST): >3 x ULN; alanine aminotransferase (ALT): >3 x ULN; G-Glutamyl transferase (GGT): >2 x ULN; Bilirubin: >2 x ULN; blood urea nitrogen (BUN): >2 x BL; creatinine: >4 x BL; Sodium (Na): <0.95 x LLN/ >1.05 x ULN; potassium (K): <0.9 x LLN/ >1.1 x ULN; calcium (Ca): <0.8 x LLN/>1.2 x ULN; phosphorous (P): <0.75 x LLN/ >1.2 5 x ULN
Day IP-1 through Day IP-85
IP; Number of Participants With Marked Chemistry and Urinalysis Laboratory Abnormalities: IP1C
Time Frame: Day IP-1 through Day IP-85
Low=lower than LLN, High=greater than ULN. LLN/ULN= serum glucose (Glu): <65 mg/dL/ >220 mg/dL; total protein: < 0.9 x LLN/ >1.1 x ULN; albumin:<0.9 x LLN; uric acid: >1.5 x ULN. For Urinalysis (Urine protein, urine Glu, urine blood, leukocyte esterase, Red Blood Cells [RBCs], White Blood Cells [WBCs]): Use ≥2 when BL value missing or value ≥4, or when pre-dose=0 or 0.5. Use ≥3 when pre-dose=1. Use ≥4 when pre-dose=2 or 3
Day IP-1 through Day IP-85
IP; Number of Participants With Marked Hematology, Liver and Kidney Function, and Electrolyte Laboratory Abnormalities: IP2C
Time Frame: Day IP-1 through Day IP-85
High=greater than Upper Normal Limit (ULN), Low=lower than Lower Normal Limit (LLN). LLN/ULN= Hemoglobin (HGB): >3 g/dL decrease from Baseline (BL); Hematocrit: <0.75 x BL; Erythrocytes: <0.75 x BL; Platelets (PLT): <0.67 x LLN/>1.5 x ULN; Leukocytes: <0.75 x LLN/ >1.25 x ULN; eosinophils: >0.750 x 10^3 c/uL; monocytes: >2000 mm3; lymphocytes: <0.750 x 10^3 c/uL/ >7.50 x 10^3 c/uL; blood urea nitrogen (BUN): >2 x BL; creatinine: >4 x BL; Sodium (Na): <0.95 x LLN/ >1.05 x ULN; potassium (K): <0.9 x LLN/ >1.1 x ULN; phosphorous (P): <0.75 x LLN/ >1.2 5 x ULN;
Day IP-1 through Day IP-85
IP; Number of Participants With Marked Chemistry and Urinalysis Laboratory Abnormalities: IP2C
Time Frame: Day IP-1 through Day IP-85
Low=lower than LLN, High=greater than ULN. LLN/ULN= serum glucose (Glu): <65 mg/dL/ >220 mg/dL; total protein: < 0.9 x LLN/ >1.1 x ULN; albumin:<0.9 x LLN. For Urinalysis (Urine protein, urine Glu, urine blood, leukocyte esterase, Red Blood Cells [RBCs], White Blood Cells [WBCs]): Use ≥2 when BL value missing or value ≥4, or when pre-dose=0 or 0.5. Use ≥3 when pre-dose=1. Use ≥4 when pre-dose=2 or 3
Day IP-1 through Day IP-85
IP; Number of Participants With Abatacept-Induced Antibodies: IP1C + IP2C
Time Frame: For participants treated in MP: Day IP-1 (Baseline) to Day MP-1 (Day IP-85). For participants treated in OL directly after IP: Day IP-1 to Day OL-1. For participants treated only in IP: All measurements after Day IP-1 (including follow-up visits)
A electrochemiluminescent immunoassay screened sera for drug-specific antibodies, immunocompetition was used to identify specific anti-Abatacept reactivity. CTLA4 and Possibly Ig category=reactivity against extracellular domain of human CTLA4, constant regions of human IgG1, or both (CTLA4Ig; Abatacept molecule). Ig and/or Junction category=reactivity against constant regions and/or hinge region of human IgG1. Drug-induced seropositivity was defined as a post-baseline titer higher than Baseline, or any post-baseline positivity if Baseline value was missing.
For participants treated in MP: Day IP-1 (Baseline) to Day MP-1 (Day IP-85). For participants treated in OL directly after IP: Day IP-1 to Day OL-1. For participants treated only in IP: All measurements after Day IP-1 (including follow-up visits)
MP; Number of Participants in Clinical Remission at Month 12
Time Frame: Month 12 (Day MP-365)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point.
Month 12 (Day MP-365)
MP; Number of Participants With Mayo Endoscopic Subscores Indicating Mucosal Healing (≤1 Point) at Month 12
Time Frame: Month 12 (Day MP-365)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Mucosal healing was defined as endoscopic subscore ≤ 1 point
Month 12 (Day MP-365)
MP; Number of Participants in Clinical Remission at Both Month 6 and Month 12
Time Frame: Month 6 (Day MP-169), Month 12 (Day MP-365)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point.
Month 6 (Day MP-169), Month 12 (Day MP-365)
MP; Number of Participants With Baseline Oral Corticosteroid Use Who Have Discontinued Corticosteroids and Achieved Clinical Remission by Month 12
Time Frame: Day MP-365 (Month 12)
Baseline corticosteroids equivalent of ≤30 mg prednisone daily. The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater frequency or severity. Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point.
Day MP-365 (Month 12)
MP; Mean Change From Baseline to Month 12 in IBDQ
Time Frame: Day MP-365
The Inflammatory Bowel Disease Questionnaire (IBDQ) was used to measure disease specific quality of life. The IBDQ consists of a self-administered 32-item questionnaire that evaluates quality of life across 4 dimensional scores: Bowel, Systemic, Social and Emotional. The response to each question can range from 1 to 7, with 1 indicating severe problem and 7 indicating normal health. The total IBDQ is computed as the sum of the responses to the individual IBDQ questions. The total score can range between 32 to 224 with higher scores indicating a better quality of life.
Day MP-365
MP; Mean Change From Baseline to Month 12 in Short Form-36 (SF-36)
Time Frame: Day MP-365
The SF-36 is a validated instrument to measure health-related quality of life across multiple disease states. Individual subscale scores and 2 summary scores are calculated: (1) physical component summary (PCS) which includes physical functioning, role-physical, bodily pain, and general health; (2) mental component summary (MCS) which includes vitality, social functioning, role-emotional, and mental health. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight, with values ranging from worse health (0) to best health (100).
Day MP-365
MP; Number of Participants With Baseline Oral Corticosteroid Use Who Have Discontinued Corticosteroids for 90 Consecutive Days and Achieved Clinical Remission by Month 12
Time Frame: Day MP-365 (Month 12)
Baseline corticosteroids equivalent of ≤30 mg prednisone daily. The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater frequency or severity. Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point.
Day MP-365 (Month 12)
MP; Number of Participants With Mayo Rectal Bleeding Subscores Indicating Mild Disease (≤1 Point) at Month 12
Time Frame: Day MP-365 (Month 12)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. An absolute rectal bleeding subscore of ≤1 point was indicative of mild disease.
Day MP-365 (Month 12)
MP; Number of Participants With Mayo Stool Frequency Subscores Indicating Mild Disease (≤1 Point) at Month 12
Time Frame: Day MP-365 (Month 12)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. An absolute stool frequency subscore of ≤1 point was indicative of mild disease.
Day MP-365 (Month 12)
MP; Number of Participants With Mayo PGA Subscores Indicating Mild Disease (≤1 Point) at Month 12
Time Frame: Day MP-365 (Month 12)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. An absolute PGA subscore of ≤1 point was indicative of mild disease.
Day MP-365 (Month 12)
MP; Number of Participants With Clinical Response at Month 12 Among Participants With Inadequate Response/Intolerance to Prior Anti-TNF Therapy (Infliximab)
Time Frame: Month 12 (Day MP-365)
The Mayo Scoring system (range 0-12 points, high scores=greater severity of disease) is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Clinical response=reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point. Inadequate response/intolerance=inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.
Month 12 (Day MP-365)
MP; Number of Participants With Clinical Remission at Month 12 Among Participants With Inadequate Response/Intolerance to Prior Anti-TNF Therapy (Infliximab)
Time Frame: Month 12 (Day MP-365)
The Mayo Scoring system (range 0-12 points, high scores=greater severity of disease) is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point. Inadequate response/intolerance =inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.
Month 12 (Day MP-365)
MP; Number of Participants With Clinical Mucosal Healing at Month 12 Among Participants With Inadequate Response/Intolerance to Prior Anti-TNF Therapy (Infliximab)
Time Frame: Month 12 (Day MP-365)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Mucosal healing was defined as endoscopic subscore ≤1 point. Inadequate response/intolerance = inadequate response/intolerance to an approved anti-TNF agent prior to this study at an approved labeled dose for ≥8 weeks.
Month 12 (Day MP-365)
MP; Number of Participants With Abatacept-Induced Antibodies
Time Frame: For participants not entering OL: All measurements starting after Day MP-1 (including follow-up visits). For participants entering OL: From first measurement after Day MP-1 to Day MP-365 (Day OL-1).
A electrochemiluminescent immunoassay screened sera for drug-specific antibodies, immunocompetition was used to identify specific anti-Abatacept reactivity. CTLA4 and Possibly Ig category=reactivity against extracellular domain of human CTLA4, constant regions of human IgG1, or both (CTLA4Ig; Abatacept molecule). Ig and/or Junction category=reactivity against constant regions and/or hinge region of human IgG1. Drug-induced seropositivity was defined as a post-baseline titer higher than Baseline, or any post-baseline positivity if Baseline value was missing.
For participants not entering OL: All measurements starting after Day MP-1 (including follow-up visits). For participants entering OL: From first measurement after Day MP-1 to Day MP-365 (Day OL-1).
MP; Number of Participants With Adverse Events (AEs), Related AEs, Deaths, Serious AEs (SAEs), Related SAEs, and AEs Leading to Discontinuation
Time Frame: Day MP-1 through Day MP-365
AE=any new untoward medical occurrence or worsening of a pre-existing medical condition which does not necessarily have a causal relationship with this treatment. Related AE=relationship of certain, probable, possible, or missing. SAE=any untoward medical occurrence that at any dose: results in death, is life-threatening, requires inpatient hospitalization or causes prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, results in development of drug dependency or drug abuse, is an important medical event.
Day MP-1 through Day MP-365
MP; Number of Participants With AEs of Special Interest
Time Frame: Day MP-1 through Day MP-365
AE=any new untoward medical occurrence or worsening of a pre-existing medical condition which does not necessarily have a causal relationship with this treatment. AEs of special interest are those AEs that may be associated with the use of immunomodulatory drugs, including all infections, serious infections, and opportunistic infections; autoimmune disorders; neoplasms; acute infusional AEs (pre-specified AEs occurring within 1 hour of start of infusion) and peri-infusional AEs (pre-specified AEs occurring within 24 hours of the start of infusion).
Day MP-1 through Day MP-365
MP; Number of Participants With Physical Examination Findings
Time Frame: Day IP-85 through Day MP-365
Complete physical examination was obtained at the Screening Visit, Day MP-365, and OL Final Visit/Early Termination visits. Interim physical examinations were performed at other study visits. Interim physical exam were not as comprehensive as the initial full examination but did note any changes in the participant's condition since the last assessment and did not preclude examination of any of the body systems as clinically indicated. Participants were observed for AEs and vital signs (blood pressure, heart rate, and temperature).
Day IP-85 through Day MP-365
MP; Number of Participants With Marked Hematology Laboratory Abnormalities
Time Frame: Day IP-85 through Day MP-365
High=greater than ULN, Low=lower than LLN. LLN/ULN= HGB: >3 g/dL decrease from Baseline (BL); Hematocrit: <0.75 x BL; Erythrocytes: <0.75 x BL; PLT: <0.67 x LLN/>1.5 x ULN; Leukocytes: <0.75 x LLN/ >1.25 x ULN; neutrophils+bands: <1.0 x 10^3 c/uL; eosinophils: >0.750 x 10^3 c/uL; monocytes: >2000 mm3; lymphocytes: <0.750 x 10^3 c/uL/ >7.50 x 10^3 c/uL; GGT: >2 x ULN; Bilirubin: >2 x ULN; BUN: >2 x BL; Na: <0.95 x LLN/ >1.05 x ULN; K: <0.9 x LLN/ >1.1 x ULN; Ca: <0.8 x LLN/>1.2 x ULN
Day IP-85 through Day MP-365
MP; Number of Participants With Marked Chemistry and Urinalysis Laboratory Abnormalities
Time Frame: Day IP-85 through Day MP-365
Low=lower than LLN, High=greater than ULN. LLN/ULN= serum glucose (Glu): <65 mg/dL/ >220 mg/dL; fasting serum Glu: <0.8 x LLN/ >1.5 x ULN; total protein: < 0.9 x LLN/ >1.1 x ULN; albumin:<0.9 x LLN; uric acid: >1.5 x ULN. For Urinalysis (Urine protein, urine Glu, urine blood, leukocyte esterase, Red Blood Cells [RBCs], White Blood Cells [WBCs]): Use ≥2 when BL value missing or value ≥4, or when pre-dose=0 or 0.5. Use ≥3 when pre-dose=1. Use ≥4 when pre-dose=2 or 3
Day IP-85 through Day MP-365
OL; Number of Participants With Clinical Response Over Time
Time Frame: Day OL-1 through Day OL-729
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. A clinical response is defined as a reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with an accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point.
Day OL-1 through Day OL-729
OL; Number of Participants With Clinical Remission Over Time
Time Frame: Day OL-1 through Day OL-729
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Clinical remission is defined as a Mayo score of ≤ 2 points with no individual subscore exceeding 1 point.
Day OL-1 through Day OL-729
OL; Number of Participants With Mayo Endoscopic Subscores Indicating Mucosal Healing (≤1 Point) During OL
Time Frame: Open-Label Period (Day OL-1 through Day OL-729)
The Mayo Scoring system ranges from 0 - 12 points and is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Higher Mayo scores indicate greater severity of disease. Mucosal healing was defined as endoscopic subscore ≤ 1 point
Open-Label Period (Day OL-1 through Day OL-729)
OL; Number of Participants With Clinical Response or Clinical Remission Upon Retreatment With Abatacept Among Those Who Received Abatacept in the IP or MP Period
Time Frame: Last Study Visit (Day OL-729)
The Mayo Scoring system (range 0-12 points, high scores=greater severity of disease) is a composite index consisting of 4 disease variables (stool frequency, rectal bleeding, endoscopy evaluation, and Physician's Global Assessment). Clinical response=reduction from baseline in the Mayo score of ≥ 3 points and ≥ 30%, with accompanying decrease in the rectal bleeding subscore of ≥ 1 point or absolute rectal bleeding subscore of ≤ 1 point. Clinical remission = Mayo score of ≤ 2 points with no individual subscore exceeding 1 point. Change from Baseline= post-Baseline - Baseline value.
Last Study Visit (Day OL-729)
OL; Number of Participants With Abatacept-Induced Antibodies
Time Frame: For participants receiving OL medication, all measurements starting after Day OL-1 (including follow-up visits and at 56 and 85 days after last dose)
A electrochemiluminescent immunoassay screened sera for drug-specific antibodies, immunocompetition was used to identify specific anti-Abatacept reactivity. CTLA4 and Possibly Ig category=reactivity against extracellular domain of human CTLA4, constant regions of human IgG1, or both (CTLA4Ig; Abatacept molecule). Ig and/or Junction category=reactivity against constant regions and/or hinge region of human IgG1. Drug-induced seropositivity was defined as a post-baseline titer higher than Baseline, or any post-baseline positivity if Baseline value was missing.
For participants receiving OL medication, all measurements starting after Day OL-1 (including follow-up visits and at 56 and 85 days after last dose)
OL; Number of Participants Using Corticosteroids During OL
Time Frame: Day OL-1 through Day OL-729
Participants taking oral corticosteroids (equivalent of ≤ 30 mg prednisone daily) must have met minimum treatment duration at entry into IP and had stable dose for ≥2 weeks prior to entry into the IP.
Day OL-1 through Day OL-729

Collaborators and Investigators

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Publications and helpful links

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Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2006

Primary Completion (Actual)

June 1, 2009

Study Completion (Actual)

November 1, 2009

Study Registration Dates

First Submitted

December 11, 2006

First Submitted That Met QC Criteria

December 11, 2006

First Posted (Estimate)

December 12, 2006

Study Record Updates

Last Update Posted (Estimate)

March 24, 2015

Last Update Submitted That Met QC Criteria

March 4, 2015

Last Verified

March 1, 2015

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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