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Completed Phase 2 Interventional

Primary Prophylaxis of Cerebral Toxoplasmosis in HIV-Infected Patients

ClinicalTrials.gov ID: NCT00000643

Public ClinicalTrials.gov record NCT00000643. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 7:30 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

To evaluate the effectiveness of pyrimethamine (given with leucovorin calcium versus placebo (an inactive substance) for the primary prophylaxis (prevention) of cerebral toxoplasmosis in HIV-infected patients. Cerebral toxoplasmosis is one of the most frequently encountered opportunistic infections in the course of AIDS. The mortality (death) rate is estimated to be greater than 50 percent. Pyrimethamine is a drug that appears promising for the primary prevention of cerebral toxoplasmosis in HIV-infected patients.

Study identification

NCT ID
NCT00000643
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Enrollment
150 participants

Conditions and interventions

Eligibility (public fields only)

Age range
13 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Not listed
Primary completion
Not listed
Completion
May 1994 (Actual)
Last update posted
Nov 2, 2021

Ends 1994

United States locations

U.S. sites
24
U.S. states
14
U.S. cities
19
Facility City State ZIP Site status
Stanford CRS Palo Alto California 94304 —
Harbor-UCLA Med. Ctr. CRS Torrance California 90502 —
Univ. of Miami AIDS CRS Miami Florida 33136 —
Northwestern University CRS Chicago Illinois 60611 —
Rush Univ. Med. Ctr. ACTG CRS Chicago Illinois 60611 —
Indiana Univ. School of Medicine, Infectious Disease Research Clinic Indianapolis Indiana 46202 —
Tulane Med. Ctr. - Charity Hosp. of New Orleans, ACTU New Orleans Louisiana — —
Johns Hopkins Adult AIDS CRS Baltimore Maryland 21287 —
Bmc Actg Crs Boston Massachusetts 02118 —
University of Minnesota, ACTU Minneapolis Minnesota 55455 —
St. Louis ConnectCare, Infectious Diseases Clinic St Louis Missouri — —
Washington U CRS St Louis Missouri — —
NJ Med. School CRS Newark New Jersey 07103 —
SUNY - Buffalo, Erie County Medical Ctr. Buffalo New York 14215 —
Beth Israel Med. Ctr. (Mt. Sinai) New York New York 10003 —
NY Univ. HIV/AIDS CRS New York New York 10016 —
Cornell University A2201 New York New York 10021 —
Memorial Sloan-Kettering Cancer Ctr. New York New York 10021 —
Univ. of Rochester ACTG CRS Rochester New York 14642 —
Unc Aids Crs Chapel Hill North Carolina 27599 —
Duke Univ. Med. Ctr. Adult CRS Durham North Carolina 27710 —
Univ. of Cincinnati CRS Cincinnati Ohio 45267 —
Case CRS Cleveland Ohio 44106 —
Pitt CRS Pittsburgh Pennsylvania 15213 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00000643, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Nov 2, 2021 · Synced Oct 20, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00000643 live on ClinicalTrials.gov.

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