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NCT00981357 · ClinicalTrials.gov registry record · Phase 2

A Study To Investigate Whether PF-04457845 Is Effective In Treating Pain, Is Safe And Tolerable In Patients With Osteoarthritis Of The Knee

A Phase 2 study, sponsored by Pfizer.

Completed
Registry status
Phase 2
Development phase
76
Enrollment target

NCT00981357: Completed Phase 2 study, sponsored by Pfizer.

NCT00981357 is a Phase 2 study that has completed, run by Pfizer. The registered enrollment target is 76 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (43% lower). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT00981357, a Phase 2 study, has completed, sponsored by Pfizer.

COMPLETED
Registry status
Phase 2
Development phase
76 participants
Enrollment target

Study Summary

Inactivation of the FAAH (Fatty Acid Amide Hydrolase) enzyme has been shown to relieve pain and inflammation in animal studies. PF-04457845 has been shown to inactivate the FAAH enzyme in animals and healthy human volunteers. The purpose of this study is to evaluate whether PF-04457845 can inactivate the FAAH enzyme in patients experiencing pain due to OA and whether this results in these patients experiencing less pain.

Interventions

  • DRUG Naproxen
  • DRUG PF-04457845

Trial Details

FieldValue
Enrollment Target 76 participants
Start Date 2009-11
Est. Completion 2010-05
Phase Phase 2
Pfizer

1,845 total trials

What the finished NCT00981357 record still lists

NCT00981357 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 76 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (43% lower).

The record links to 0 conditions, and to 2 interventions - of which Naproxen is the first listed.

NCT00981357 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00981357 about?

NCT00981357 is a clinical study titled "A Study To Investigate Whether PF-04457845 Is Effective In Treating Pain, Is Safe And Tolerable In Patients With Osteoarthritis Of The Knee". Inactivation of the FAAH (Fatty Acid Amide Hydrolase) enzyme has been shown to relieve pain and inflammation in animal studies. PF-04457845 has been shown to inactivate the FAAH enzyme in animals and healthy human volunteers. The purpose of this study is to evaluate whether PF-04457845 can inactivat...

What is the current status of trial NCT00981357?

This trial is currently completed. It is a Phase 2 study. The enrollment target is 76 participants. The study started on 2009-11. Estimated completion is 2010-05.

What interventions are being tested in trial NCT00981357?

The interventions under investigation include: Naproxen (DRUG), PF-04457845 (DRUG).

Who is sponsoring clinical trial NCT00981357?

This trial is sponsored by Pfizer, which has 1,845 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00981357's enrollment target sits among peer trials

76 893rd of 2000 higher than 1,101 of 2,000 other Phase 2 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 2 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT00981357, the US trial registry maintained by the National Library of Medicine. NCT00981357 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.