Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 3, 2026, 4:37 PM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
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Conditions
Ulcerative Colitis
Interventions
OPC-6535, Asacol®
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,725 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
26
States / cities
Huntsville, Alabama • Los Angeles, California • Hollywood, Florida + 23 more
Conditions
Ulcerative Colitis
Interventions
OPC-6535 Tablets (drug)
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
28
States / cities
Phoenix, Arizona • Tucson, Arizona • Fresno, California + 25 more
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
tetomilast, placebo
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
40 Years to 75 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
15
States / cities
Birmingham, Alabama • Torrance, California • Kissimmee, Florida + 12 more
Conditions
Ulcerative Colitis
Interventions
OPC-6535 Tablets (drug)
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
23
States / cities
Scottsdale, Arizona • Los Angeles, California • Santa Ana, California + 18 more