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CP-690,550 and Midazolam Drug-Drug Interaction Study

This study has been completed.
Information provided by:
Pfizer Identifier:
First received: May 14, 2009
Last updated: August 12, 2009
Last verified: August 2009
CP-690,550 and midazolam are metabolized by similar enzymes in the liver. This study is designed to assess whether co-administration of CP-690,500 and midazolam will effect the metabolism of midazolam in healthy volunteers.

Condition Intervention Phase
Healthy Volunteer Drug: midazolam; CP-690,550 + midazolam Drug: CP-690,550 + midazolam; midazolam Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 1, Randomized, 2-Way Crossover, Multiple Dose, Open Label Study Of The Effect Of CP-690,550 On Midazolam Pharmacokinetics In Healthy Volunteers

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • AUCinf of midazolam [ Time Frame: 10 Days ]

Secondary Outcome Measures:
  • AUClast, Cmax, Tmax, t1/2 of midazolam [ Time Frame: 10 Days ]
  • Vital signs, laboratory tests and adverse events [ Time Frame: 10 Days ]

Enrollment: 25
Study Start Date: June 2009
Study Completion Date: July 2009
Primary Completion Date: July 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Treatment Sequence 1 Drug: midazolam; CP-690,550 + midazolam
Period 1 : 2 mg midazolam oral syrup alone Period 2: 2 mg midazolam oral syrup plus 30 mg CP-690,550 after 6 days of CP-690,550 at 30 mg BID
Experimental: Treatment Sequence 2 Drug: CP-690,550 + midazolam; midazolam
Period 1: 2 mg midazolam oral syrup plus 30 mg CP-690,550 after 6 days of CP-690,550 at 30 mg BID Period 2: 2 mg midazolam oral syrup alone


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy male and/or female (non-child bearing potential) subjects

Exclusion Criteria:

  • Clinically significant infections within the past 3 months
  • History of previously untreated infection with Mycobacterium tuberculosis
  • Positive screening test for hepatitis B surface antigen, anti-hepatitis C antibody, or human immunodeficiency virus
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00902460

United States, Connecticut
Pfizer Investigational Site
New Haven, Connecticut, United States, 06511
Sponsors and Collaborators
Study Director: Pfizer Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Director, Clinical Trial Disclosure Group, Pfizer, Inc. Identifier: NCT00902460     History of Changes
Other Study ID Numbers: A3921059
Study First Received: May 14, 2009
Last Updated: August 12, 2009

Keywords provided by Pfizer:
drug interactions CYP3A4 CYP3A5 midazolam anti-rheumatic agents

Additional relevant MeSH terms:
Adjuvants, Anesthesia
Hypnotics and Sedatives
Central Nervous System Depressants
Physiological Effects of Drugs
Anti-Anxiety Agents
Tranquilizing Agents
Psychotropic Drugs
Anesthetics, Intravenous
Anesthetics, General
GABA Modulators
GABA Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Protein Kinase Inhibitors
Enzyme Inhibitors processed this record on September 21, 2017