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A Randomized, Double-Blind Study of 566C80 Versus Septra (Sulfamethoxazole/Trimethoprim) for the Treatment of Pneumocystis Carinii Pneumonia in AIDS Patients

2014-08-27 04:00:02 | BioPortfolio

Summary

To evaluate the effectiveness of atovaquone (566C80) compared to a standard antipneumocystis agent, (SMX/TMP), for the treatment of mild to moderate Pneumocystis carinii pneumonia (PCP) in AIDS patients. To compare the safety of short-term (21 days) treatment with 566C80 and SMX/TMP in AIDS patients with an acute episode of PCP.

Standard therapies for acute treatment of PCP involve either SMX/TMP or pentamidine isetionate. Although both treatments are equally effective, side effects prevent completion of therapy in 11-55 percent of patients.

Description

Standard therapies for acute treatment of PCP involve either SMX/TMP or pentamidine isetionate. Although both treatments are equally effective, side effects prevent completion of therapy in 11-55 percent of patients.

Patients are randomized into one of two treatment groups to receive either (1) 566C80 for 21 days, or (2) SMX/TMP for 21 days. Patients will be stratified according to severity of PCP. Group A will be those with an arterial-alveolar (A-a) DO2 < 35 mm Hg. Group B will have an A-a DO2 of 35-45 mm Hg., and will also be required to receive therapy with Corticosteroids. All doses are taken with food. During the 21 days of treatment, patients are examined clinically for adverse effects and have hematology (blood-related) and clinical chemistry studies conducted a minimum of 2 times weekly. More frequent monitoring may be required at the discretion of the investigator. To evaluate the effectiveness of study medication, the clinical status of each patient is evaluated 2 to 3 times per week (e.g., dyspnea score, cough score, chest tightness/pain score, vital signs). Also, on days 7 and 21 of treatment, an arterial blood gas measurement and chest X-ray are performed. Patients who experience severe toxicities will be discontinued from the study and placed on alternative therapy. Patients will also be removed from study if they show significant clinical deterioration within the first 7 days of therapy or if there is no improvement after 10 days of therapy. This study involves a double placebo with one group randomized to receive oral 566C80 and placebo tablets which look like SMX/TMP while the other group will receive SMX/TMP and placebo tablets looking like 566C80.

Study Design

Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Primary Purpose: Treatment

Conditions

Pneumonia, Pneumocystis Carinii

Intervention

Atovaquone, Sulfamethoxazole-Trimethoprim

Location

Univ of Alabama at Birmingham
Birmingham
Alabama
United States
35294

Status

Completed

Source

National Institute of Allergy and Infectious Diseases (NIAID)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T04:00:02-0400

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Medical and Biotech [MESH] Definitions

A species of PNEUMOCYSTIS infecting humans and causing PNEUMOCYSTIS PNEUMONIA. It also occasionally causes extrapulmonary disease in immunocompromised patients. Its former name was Pneumocystis carinii f. sp. hominis.

The prototype species of PNEUMOCYSTIS infecting the laboratory rat, Rattus norvegicus (RATS). It was formerly called Pneumocystis carinii f. sp. carinii. Other species of Pneumocystis can also infect rats.

A drug combination with broad-spectrum antibacterial activity against both gram-positive and gram-negative organisms. It is effective in the treatment of many infections, including PNEUMOCYSTIS PNEUMONIA in AIDS.

This drug combination has proved to be an effective therapeutic agent with broad-spectrum antibacterial activity against both gram-positive and gram-negative organisms. It is effective in the treatment of many infections, including PNEUMOCYSTIS PNEUMONIA in AIDS.

A pyrimidine inhibitor of dihydrofolate reductase, it is an antibacterial related to PYRIMETHAMINE. The interference with folic acid metabolism may cause a depression of hematopoiesis. It is potentiated by SULFONAMIDES and the TRIMETHOPRIM-SULFAMETHOXAZOLE COMBINATION is the form most often used. It is sometimes used alone as an antimalarial. TRIMETHOPRIM RESISTANCE has been reported.

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