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Completed Phase 3 Interventional

A Randomized, Comparative Study of Daily Dapsone and Daily Atovaquone for Prophylaxis Against PCP in HIV-Infected Patients Who Are Intolerant of Trimethoprim and/or Sulfonamides

ClinicalTrials.gov ID: NCT00000802

Public ClinicalTrials.gov record NCT00000802. 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 21, 2026, 2:38 AM 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 compare the efficacy and safety of dapsone versus atovaquone in preventing or delaying the onset of histologically proven or probable Pneumocystis carinii pneumonia in HIV-infected patients with CD4 counts \<= 200 cells/mm3 or \<= 15 percent of the total lymphocyte count who are intolerant to trimethoprim and/or sulfonamides. Trimethoprim/sulfamethoxazole (TMP/SMX), which is effective for secondary PCP prophylaxis, is associated with allergic manifestations and side effects that limit its use. Patients who are intolerant of TMP/SMX require an effective alternative. Dapsone and atovaquone have both shown promise as PCP prophylactic agents.

Study identification

NCT ID
NCT00000802
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Enrollment
700 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
Jul 1997 (Actual)
Last update posted
Nov 4, 2021

Ends 1997

United States locations

U.S. sites
43
U.S. states
20
U.S. cities
33
Facility City State ZIP Site status
Alabama Therapeutics CRS Birmingham Alabama 35294 —
USC CRS Los Angeles California 900331079 —
Stanford CRS Palo Alto California 943055107 —
Ucsd, Avrc Crs San Diego California 921036325 —
Ucsf Aids Crs San Francisco California 941102859 —
Santa Clara Valley Med. Ctr. San Jose California 951282699 —
San Mateo County AIDS Program San Mateo California — —
Harbor-UCLA Med. Ctr. CRS Torrance California 90502 —
University of Colorado Hospital CRS Aurora Colorado 80262 —
Howard University Hosp., Div. of Infectious Diseases, ACTU Washington D.C. District of Columbia 20059 —
Univ. of Miami AIDS CRS Miami Florida 331361013 —
Emory Univ. Hemophilia Program Office Atlanta Georgia 303652225 —
Queens Med. Ctr. Honolulu Hawaii 96816 —
Univ. of Hawaii at Manoa, Leahi Hosp. Honolulu Hawaii 96816 —
Northwestern University CRS Chicago Illinois 60611 —
Cook County Hosp. CORE Ctr. Chicago Illinois 60612 —
Rush Univ. Med. Ctr. ACTG CRS Chicago Illinois 60612 —
Weiss Memorial Hosp. Chicago Illinois 60640 —
Indiana Univ. School of Medicine, Infectious Disease Research Clinic Indianapolis Indiana 462025250 —
Univ. of Iowa Healthcare, Div. of Infectious Diseases Iowa City Iowa 52242 —
Johns Hopkins Adult AIDS CRS Baltimore Maryland 21287 —
Bmc Actg Crs Boston Massachusetts 02118 —
Beth Israel Deaconess - East Campus A0102 CRS Boston Massachusetts 02215 —
Massachusetts General Hospital ACTG CRS Boston Massachusetts — —
Hennepin County Med. Ctr., Div. of Infectious Diseases Minneapolis Minnesota 55415 —
University of Minnesota, ACTU Minneapolis Minnesota 55455 —
St. Louis ConnectCare, Infectious Diseases Clinic St Louis Missouri — —
Washington U CRS St Louis Missouri — —
Univ. of Nebraska Med. Ctr., Durham Outpatient Ctr. Omaha Nebraska — —
SUNY - Buffalo, Erie County Medical Ctr. Buffalo New York 13210 —
Beth Israel Med. Ctr. (Mt. Sinai) New York New York — —
NY Univ. HIV/AIDS CRS New York New York — —
Univ. of Rochester ACTG CRS Rochester New York 14642 —
Unc Aids Crs Chapel Hill North Carolina — —
Carolinas HealthCare System, Carolinas Med. Ctr. Charlotte North Carolina 28203 —
Regional Center for Infectious Disease, Wendover Medical Center CRS Greensboro North Carolina 27401 —
Wake County Health and Human Services CRS Raleigh North Carolina 27610 —
Univ. of Cincinnati CRS Cincinnati Ohio — —
Case CRS Cleveland Ohio 44106 —
MetroHealth CRS Cleveland Ohio — —
The Ohio State Univ. AIDS CRS Columbus Ohio 432101228 —
Hosp. of the Univ. of Pennsylvania CRS Philadelphia Pennsylvania 19104 —
University of Washington AIDS CRS Seattle Washington 981224304 —

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

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 1 non-U.S. site.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00000802, 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 4, 2021 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00000802 live on ClinicalTrials.gov.

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