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First In Human Study Of Increasing Oral Doses Of PF-04634817

This study has been completed.
Information provided by:
Pfizer Identifier:
First received: March 26, 2010
Last updated: October 12, 2010
Last verified: October 2010
The study will evaluate the hypothesis that at doses and plasma concentrations which affect pharmacodynamic markers of activity at the chemokine receptors, CCR2 and CCR5, the compound is safe and well tolerated. It will also evaluate the hypothesis that the pharmacokinetic profile is robust and consistent with a once or twice a day therapeutic administration.

Condition Intervention Phase
Drug: PF-04634817 Placebo
Drug: PF-04634817
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Double Blind, Randomized, Placebo Controlled, Dose Escalation Study To Investigate The Pharmacokinetics (In The Fed And Fasted State), Safety And Toleration Of Single Oral Doses Of PF-04634817 In Healthy Volunteers

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Safety and toleration: adverse events, supine and standing vital sign measurements, telemetry, 12-lead ECGs, blood and urine tests [ Time Frame: 0-3 days ]
  • Plasma pharmacokinetics: Cmax, Tmax, AUClast, AUCinf, AUC0-24, CL/F, Vz/F and T1/2 [ Time Frame: 0-4 days ]
  • Urinary pharmacokinetics: Aet (mount excreted in urine), Aet% and CLr [ Time Frame: 0-2 days ]
  • p-ERK inhibition in human monocytes [ Time Frame: 0-3 days ]
  • Change in circulating monocytes [ Time Frame: 0-3 days ]

Secondary Outcome Measures:
  • Change from baseline in plasma MCP-1 [ Time Frame: 0-3 days ]
  • MIP 1B stimulated CCR5 receptor internalization [ Time Frame: 0-3 days ]
  • MCP-1 stimulated CCR5 receptor internalization [ Time Frame: 0-3 days ]

Enrollment: 27
Study Start Date: April 2010
Study Completion Date: September 2010
Primary Completion Date: September 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: Placebo Drug: PF-04634817 Placebo
Oral solution, placebo, single dose
Experimental: Cohort 1, 1mg Drug: PF-04634817
Oral solution, 1mg, single dose
Experimental: Cohort 1, 3mg Drug: PF-04634817
Oral solution, 3mg, single dose
Experimental: Cohort 1, 10mg Drug: PF-04634817
Oral solution, 10mg, single dose
Experimental: Cohort 2, 30mg Drug: PF-04634817
Oral solution, 30mg, single dose
Experimental: Cohort 2, 100mg Drug: PF-04634817
Oral solution, 100mg, single dose
Experimental: Cohort 2, 300mg Drug: PF-04634817
Oral solution, 300mg, single dose
Experimental: Cohort 3, 600mg Drug: PF-04634817
Oral solution, 600mg, single dose
Experimental: Cohort 3, 900mg Drug: PF-04634817
Oral solution, 900mg, single dose
Experimental: Cohort 3, up to 900mg (fed) Drug: PF-04634817
Oral solution, up to 900mg, single dose after food
Placebo Comparator: Cohort 3, placebo (fed) Drug: PF-04634817 Placebo
Oral solution, placebo, single dose after food


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

Inclusion Criteria:

  • Healthy male or female (of non-child bearing potential) subjects between 18 and 55 years of age.
  • Body mass index of 17.5 to 30.5 kg/m2 and total body weight > 50kg.

Exclusion Criteria:

  • Evidence or history of any clinically significant disease.
  • Treatment with an investigational drug within 30 days of study start
  • Use of prescription and non-prescription medicines within 7 days of study start
  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: NCT01098877

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: NCT01098877     History of Changes
Other Study ID Numbers: B1261002
Study First Received: March 26, 2010
Last Updated: October 12, 2010

Keywords provided by Pfizer:
pharmacodynamics processed this record on April 28, 2017