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NCT00000966 · ClinicalTrials.gov registry record · Phase 1

A Study of Azithromycin Plus Pyrimethamine in the Treatment of a Brain Infection in Patients With AIDS

A Phase 1 study, sponsored by Pfizer.

Completed
Registry status
Phase 1
Development phase
45
Enrollment target

NCT00000966: Completed Phase 1 study, sponsored by Pfizer.

NCT00000966 is a Phase 1 study that has completed, run by Pfizer. The registered enrollment target is 45 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (25% lower). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT00000966, a Phase 1 study, has completed, sponsored by Pfizer.

COMPLETED
Registry status
Phase 1
Development phase
45 participants
Enrollment target

Study Summary

To evaluate the effectiveness and toxicity of oral azithromycin and pyrimethamine as acute therapy for toxoplasmic encephalitis in AIDS patients. To assess the toxicity and effectiveness of azithromycin alone as maintenance therapy. Encephalitis caused by Toxoplasma gondii is the most frequent cause of focal central nervous system infection in patients with AIDS. Untreated, the encephalitis is fatal. Standard treatment for toxoplasmic encephalitis is associated with serious adverse effects. Thus, alternative treatments are needed.

Interventions

  • DRUG Azithromycin
  • DRUG Leucovorin calcium
  • DRUG Pyrimethamine

Trial Details

FieldValue
Enrollment Target 45 participants
Phase Phase 1
Pfizer

1,845 total trials

What the finished NCT00000966 record still lists

NCT00000966 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 45 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (25% lower).

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

NCT00000966 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00000966 about?

NCT00000966 is a clinical study titled "A Study of Azithromycin Plus Pyrimethamine in the Treatment of a Brain Infection in Patients With AIDS". To evaluate the effectiveness and toxicity of oral azithromycin and pyrimethamine as acute therapy for toxoplasmic encephalitis in AIDS patients. To assess the toxicity and effectiveness of azithromycin alone as maintenance therapy. Encephalitis caused by Toxoplasma gondii is the most frequent caus...

What is the current status of trial NCT00000966?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 45 participants.

What interventions are being tested in trial NCT00000966?

The interventions under investigation include: Azithromycin (DRUG), Leucovorin calcium (DRUG), Pyrimethamine (DRUG).

Who is sponsoring clinical trial NCT00000966?

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 NCT00000966's enrollment target sits among peer trials

45 1066th of 2000 higher than 915 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 NCT00000966, the US trial registry maintained by the National Library of Medicine. NCT00000966 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.