A Study of Safety and Effectiveness of Ustekinumab (CNTO 1275) in Patients With Moderate to Severe Plaque-type Psoriasis (PHOENIX1)
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ClinicalTrials.gov Identifier: NCT00267969 |
Recruitment Status :
Completed
First Posted : December 22, 2005
Results First Posted : August 24, 2012
Last Update Posted : June 17, 2013
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Condition or disease | Intervention/treatment | Phase |
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Psoriasis | Drug: ustekinumab Drug: placebo | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 766 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Phase 3, Multicenter, Randomized, Double-blind, Placebo Controlled Trial Evaluating the Efficacy and Safety of Ustekinumab (CNTO 1275) in the Treatment of Subjects With Moderate to Severe Plaque-type Psoriasis |
Study Start Date : | December 2005 |
Actual Primary Completion Date : | July 2006 |
Actual Study Completion Date : | May 2011 |

Arm | Intervention/treatment |
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Experimental: ustekinumab 45 mg
Patients received ustekinumab 45 mg at Weeks 0, 4 and 16. Treatments after Week 16 were dependent on clinical response. At Week 40, patients who achieved PASI 75 at both Week 28 and Week 40 were re-randomized to withdraw from therapy (placebo) or continue 45 mg every 12 week maintenance therapy.
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Drug: ustekinumab
Type = exact number, Form = solution for injection, Number = 45 and 90, Unit = mg, Route = subcutaneous (SC) administered at Weeks 0, 4 and 16. Both treatments (45 mg and 90 mg) administered every 12 weeks after Week 16 depending on clinical response.
Other Name: CNTO 1275 |
Experimental: ustekinumab 90 mg
Patients received ustekinumab 90 mg at Week 0, 4 and 16. Treatments after Week 16 were dependent on clinical response. At Week 40, patients who achieved PASI 75 at both Week 28 and Week 40 were re-randomized to withdraw from therapy (placebo) or continue 90 mg every 12 week maintenance therapy.
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Drug: ustekinumab
Type = exact number, Form = solution for injection, Number = 45 and 90, Unit = mg, Route = subcutaneous (SC) administered at Weeks 0, 4 and 16. Both treatments (45 mg and 90 mg) administered every 12 weeks after Week 16 depending on clinical response.
Other Name: CNTO 1275 |
Placebo Comparator: Placebo
Patients received placebo at Weeks 0 and 4. At Weeks 12 and 16, placebo crossed over to receive ustekinumab 45 mg or 90 mg. Treatments after Week 16 were dependent on clinical response.
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Drug: placebo
Form = solution for injection, route = SC administered at Weeks 0 and 4. At Weeks 12 and 16, placebo will be crossed over to receive ustekinumab 45 mg or 90 mg. |
- Psoriasis Area-and-severity Index (PASI) 75% Improvement From Baseline at Week 12. [ Time Frame: Week 12 ]The number of participants achieving at least 75% improvement from baseline in Psoriasis Area and Severity Index (PASI) (0 [best] - 72 [worst]) at Week 12. This is a test of how bad a person's psoriasis is. The combination of redness, scaling, and thickness, as well as overall body involvement determine the PASI score.
- Number of Participants Who Achieved a Physician Global Assessment (PGA) Score of Cleared (0) or Minimal (1) at Week 12 [ Time Frame: Week 12 ]The PGA is used to determine the participant's psoriasis lesions overall at a given time point. Overall lesions will be graded as : (0) = cleared, (1) = minimal, (2) = mild, (3) = moderate, (4) = marked, and (5) = severe for induration, erythema, and scaling. The sum of the 3 scales will be divided by 3 to obtain a final PGA score ranging from 0 [best] to 5 [worst].
- Change From Baseline in Dermatology Life Quality Index (DLQI) at Week 12 [ Time Frame: Baseline (Week 0), Week 12 ]Change from baseline in Dermatology Life Quality Index (DLQI) from baseline at Week 12. This DLQI is a 10-item questionnaire, that in addition to evaluating overall quality of life, can be used to assess 6 different aspects that may affect quality of life: symptoms and feelings, daily activities, leisure, work or school performance, personal relationships, and treatment. Scores range from 0 (no impairment in quality of life) to 30 (most impairment in quality of life).
- Psoriasis Area and Severity Index (PASI) 75 Responders at Week 52 [ Time Frame: Week 52 ]The number of participants achieving at least 75% improvement from baseline in Psoriasis Area and Severity Index (PASI) (0 [best] - 72 [worst]) at Week 52 in participants randomly assigned to a treatment group at Week 40. This is a test of how bad a person's psoriasis is. The combination of redness, scaling, and thickness, as well as overall body involvement determine the PASI score.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Patients with plaque-type psoriasis diagnosed at least 6 months prior and covering at least 10% of total body surface areas
- Have psoriasis area-and-severity index score of >=12
- Patients who are considered by treating dermatologist to be a candidate for phototherapy or systemic treatment of psoriasis
- Have no history of latent or active TB
Exclusion Criteria:
- Currently have nonplaque forms of psoriasis or drug-induced psoriasis
- Have any therapeutic agent targeted at reducing IL-12 or IL-23
- Have had a BCG vaccination within the previous 12 months
- Have a history of chronic or recurrent infectious disease or who have or have had a serious infection requiring hospitalization or intravenous antibiotics within the previous 2 months
- Have or ever have had a nontuberculous mycobacterial infection or opportunistic infection
- Patients known to be infected with human immunodeficiency virus, hepatitis B, or hepatitis C
- Have current signs or symptoms of severe, progressive, or uncontrolled renal, hepatic, hematological, gastrointestinal, endocrine, pulmonary, cardiac, neurologic, cerebral, or psychiatric disease
- Patients with a malignancy or who have a history of malignancy (with the exception of certain skin cancers and pre-invasive cervical cancer)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00267969
United States, Arizona | |
Phoenix, Arizona, United States | |
United States, California | |
Los Angeles, California, United States | |
Redwood City, California, United States | |
Santa Monica, California, United States | |
United States, Colorado | |
Denver, Colorado, United States | |
United States, Delaware | |
Wilmington, Delaware, United States | |
United States, Florida | |
Ocala, Florida, United States | |
United States, Georgia | |
Alpharetta, Georgia, United States | |
Marietta, Georgia, United States | |
Newnan, Georgia, United States | |
United States, Hawaii | |
Honolulu, Hawaii, United States | |
United States, Idaho | |
Boise, Idaho, United States | |
United States, Illinois | |
Normal, Illinois, United States | |
United States, Indiana | |
Indianapolis, Indiana, United States | |
United States, Louisiana | |
Lake Charles, Louisiana, United States | |
United States, Massachusetts | |
Worcester, Massachusetts, United States | |
United States, Minnesota | |
Fridley, Minnesota, United States | |
United States, Missouri | |
Saint Louis, Missouri, United States | |
United States, Nebraska | |
Omaha, Nebraska, United States | |
United States, New Jersey | |
East Windsor, New Jersey, United States | |
United States, New Mexico | |
Albuquerque, New Mexico, United States | |
United States, New York | |
New York, New York, United States | |
United States, Oregon | |
Lake Oswego, Oregon, United States | |
Portland, Oregon, United States | |
United States, Tennessee | |
Goodlettsville, Tennessee, United States | |
United States, Texas | |
Dallas, Texas, United States | |
United States, Washington | |
Seattle, Washington, United States | |
United States, Wisconsin | |
Milwaukee, Wisconsin, United States | |
Belgium | |
Brussels, Belgium | |
Brussel, Belgium | |
Edegem, Belgium | |
Canada, Alberta | |
Edmonton, Alberta, Canada | |
Canada, New Brunswick | |
Moncton, New Brunswick, Canada | |
Canada, Newfoundland and Labrador | |
St-John'S, Newfoundland and Labrador, Canada | |
Canada, Nova Scotia | |
Halifax, Nova Scotia, Canada | |
Canada, Ontario | |
London, Ontario, Canada | |
North Bay, Ontario, Canada | |
Toronto, Ontario, Canada | |
Waterloo, Ontario, Canada | |
Windsor, Ontario, Canada | |
Canada, Quebec | |
Montreal, Quebec, Canada | |
Sainte-Foy, Quebec, Canada | |
Sherbrooke, Quebec, Canada |
Study Director: | Centocor Research & Development, Inc. Clinical Trial | Centocor Research & Development, Inc. |
Responsible Party: | Centocor Research & Development, Inc. |
ClinicalTrials.gov Identifier: | NCT00267969 |
Obsolete Identifiers: | NCT01585714 |
Other Study ID Numbers: |
CR006328 C0743T08 ( Other Identifier: Centocor Research & Development, Inc., PA, USA ) 2005-003529-15 ( EudraCT Number ) |
First Posted: | December 22, 2005 Key Record Dates |
Results First Posted: | August 24, 2012 |
Last Update Posted: | June 17, 2013 |
Last Verified: | June 2013 |
Ustekinumab CNTO1275 Plaque type Psoriasis Interleukin-23 |
IL-23 Psoriasis Interleukin 12 IL-12 |
Psoriasis Skin Diseases, Papulosquamous Skin Diseases Ustekinumab Dermatologic Agents |