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NCT03551730 · ClinicalTrials.gov registry record · Phase 2

Phase 2 Healthy Volunteer Study to Evaluate the Ability of PRT064445 to Reverse the Effects of Several Blood Thinner Drugs on Laboratory Tests (Module 3 of 4)

A Phase 2 study, sponsored by Portola Pharmaceuticals.

Completed
Registry status
Phase 2
Development phase
27
Enrollment target

NCT03551730: Completed Phase 2 study, sponsored by Portola Pharmaceuticals.

NCT03551730 is a Phase 2 study that has completed, run by Portola Pharmaceuticals. The registered enrollment target is 27 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (80% lower). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT03551730, a Phase 2 study, has completed, sponsored by Portola Pharmaceuticals.

COMPLETED
Registry status
Phase 2
Development phase
27 participants
Enrollment target

Study Summary

The purpose of this study is to evaluate the ability of PRT064445 to reverse the effects of several blood thinner drugs on laboratory tests. The study also is evaluating the blood levels of PRT064445 given at different doses.

Primary Outcome

Anti-fXa activity was measured immediately prior to (Baseline) and at 2 mins following andexanet/placebo administration. Anti-fXa activity was measured using a commercial kit (Coamatic Heparin-82 33 9363, DiaPharma)

Interventions

  • DRUG Placebo
  • COMBINATION_PRODUCT PRT064445/Enoxaparin
  • COMBINATION_PRODUCT Placebo/Enoxaparin

Trial Details

FieldValue
Enrollment Target 27 participants
Start Date 2012-12
Est. Completion 2015-09
Phase Phase 2
Portola Pharmaceuticals

13 total trials

What the finished NCT03551730 record still lists

NCT03551730 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 27 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (80% lower).

The record links to 0 conditions, and to 3 interventions - of which Placebo is the first listed.

NCT03551730 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03551730 about?

NCT03551730 is a clinical study titled "Phase 2 Healthy Volunteer Study to Evaluate the Ability of PRT064445 to Reverse the Effects of Several Blood Thinner Drugs on Laboratory Tests (Module 3 of 4)". The purpose of this study is to evaluate the ability of PRT064445 to reverse the effects of several blood thinner drugs on laboratory tests. The study also is evaluating the blood levels of PRT064445 given at different doses.

What is the current status of trial NCT03551730?

This trial is currently completed. It is a Phase 2 study. The enrollment target is 27 participants. The study started on 2012-12. Estimated completion is 2015-09.

What interventions are being tested in trial NCT03551730?

The interventions under investigation include: Placebo (DRUG), PRT064445/Enoxaparin (COMBINATION_PRODUCT), Placebo/Enoxaparin (COMBINATION_PRODUCT).

Who is sponsoring clinical trial NCT03551730?

This trial is sponsored by Portola Pharmaceuticals, which has 13 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03551730's enrollment target sits among peer trials

27 1697th of 2000 higher than 293 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 NCT03551730, the US trial registry maintained by the National Library of Medicine. NCT03551730 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.