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NCT02655549 · ClinicalTrials.gov registry record · Phase 1

A Study of Anthrax Vaccines Px563L and RPA563 in Healthy Adult Subjects

A Phase 1 study, sponsored by Pfenex.

Completed
Registry status
Phase 1
Development phase
54
Enrollment target

NCT02655549: Completed Phase 1 study, sponsored by Pfenex.

NCT02655549 is a Phase 1 study that has completed, run by Pfenex. The registered enrollment target is 54 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (10% lower). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT02655549, a Phase 1 study, has completed, sponsored by Pfenex.

COMPLETED
Registry status
Phase 1
Development phase
54 participants
Enrollment target

Study Summary

The trial investigates Px563L and RPA563, two formulations of a novel anthrax vaccine.

Interventions

  • BIOLOGICAL Px563L, RPA563, or placebo

Trial Details

FieldValue
Enrollment Target 54 participants
Start Date 2015-12
Est. Completion 2017-06
Phase Phase 1
Pfenex

3 total trials

What the finished NCT02655549 record still lists

NCT02655549 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 54 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (10% lower).

The record links to 0 conditions, and to 1 intervention - of which Px563L, RPA563, or placebo is the first listed.

NCT02655549 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT02655549 about?

NCT02655549 is a clinical study titled "A Study of Anthrax Vaccines Px563L and RPA563 in Healthy Adult Subjects". The trial investigates Px563L and RPA563, two formulations of a novel anthrax vaccine.

What is the current status of trial NCT02655549?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 54 participants. The study started on 2015-12. Estimated completion is 2017-06.

What interventions are being tested in trial NCT02655549?

The interventions under investigation include: Px563L, RPA563, or placebo (BIOLOGICAL).

Who is sponsoring clinical trial NCT02655549?

This trial is sponsored by Pfenex, which has 3 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT02655549's enrollment target sits among peer trials

54 931st of 2000 higher than 1,053 of 2,000 other Phase 1 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 1 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 NCT02655549, the US trial registry maintained by the National Library of Medicine. NCT02655549 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.