A Long-Term Study To Examine The Effects Of CP-945,598 On Weight Loss And Safety

This study has been terminated.
(See termination reason in detailed description.)
Information provided by (Responsible Party):
ClinicalTrials.gov Identifier:
First received: September 11, 2006
Last updated: November 5, 2012
Last verified: November 2012

The purpose of this study is to examine the long-term weight loss and safety of CP-945,598 in obese adults

Condition Intervention Phase
Drug: CP-945,598 Treatment A
Drug: CP-945,598 Treatment B
Drug: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: A 2-Year, Randomized, Double-Blind, Placebo-Controlled Phase 3 Study To Evaluate The Long-Term Efficacy And Safety Of CP-945,598 In The Treatment Of Obese Subjects

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Proportion of subjects with 5% weight loss [ Time Frame: 1 year ] [ Designated as safety issue: No ]
  • Change in body weight [ Time Frame: 1 year ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Blood pressure, blood lipids and glucose, waist circumference, quality of life [ Time Frame: 2 years ] [ Designated as safety issue: No ]

Enrollment: 2536
Study Start Date: October 2006
Study Completion Date: January 2009
Primary Completion Date: January 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: CP-945,598 Treatment A Drug: CP-945,598 Treatment A
Arm includes CP-945,598 Treatment A plus Dietary, Physical Activity, and Weight Loss Counseling
Experimental: CP-945,598 Treatment B Drug: CP-945,598 Treatment B
Arm includes CP-945,598 Treatment B plus Dietary, Physical Activity, and Weight Loss Counseling
Placebo Comparator: Placebo Drug: Placebo
Arm includes Placebo plus Dietary, Physical Activity, and Weight Loss Counseling

Detailed Description:

The CP-945,598 program was terminated on November 3, 2008 due to changing regulatory perspectives on the risk/benefit profile of the CB1 class and likely new regulatory requirements for approval. No safety issues were involved in the termination decision.


Ages Eligible for Study:   18 Years to 70 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Obese adults with a body mass index > or = 30 kg/m2; > or = to 27 kg/m2 for those with obesity-related comorbidities including hypertension and dyslipidemia

Exclusion Criteria:

  • Pregnancy
  • Diabetes
  • Adults with serious or unstable current or past medical conditions
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00375401

  Show 82 Study Locations
Sponsors and Collaborators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
No publications provided

Responsible Party: Pfizer
ClinicalTrials.gov Identifier: NCT00375401     History of Changes
Other Study ID Numbers: A5351025
Study First Received: September 11, 2006
Last Updated: November 5, 2012
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Nutrition Disorders
Body Weight
Signs and Symptoms

ClinicalTrials.gov processed this record on April 17, 2014