To compare the safety and effectiveness of an investigational drug therapy (trimetrexate plus leucovorin calcium) with that of conventional therapy (sulfamethoxazole-trimethoprim) in the treatment of moderately severe Pneumocystis carinii pneumonia (PCP) in patients who have AIDS, are HIV positive, or are at high risk for HIV infection.

Condition	Treatment or Intervention	Phase
Pneumonia, Pneumocystis carinii HIV Infections	Drug: Trimetrexate glucuronate  Drug: Pentamidine isethionate  Drug: Sulfamethoxazole-Trimethoprim  Drug: Leucovorin calcium	Phase III

Further Study Details: 

Expected Total Enrollment:  364

New treatments are needed to reduce the mortality rate from PCP in AIDS patients and to reduce the high relapse rate found after conventional therapy. Trimetrexate (TMTX) was chosen for this trial because it was found to be much more potent than sulfamethoxazole/trimethoprim (SMX/TMP) against the PCP organism in laboratory tests. Also TMTX, in combination with leucovorin (LCV), did not cause severe toxicity in a preliminary trial. It is believed that TMTX will be more effective than SMX/TMP in treating PCP and in preventing a recurrence of PCP. Preliminary studies suggest that aerosolized pentamidine (PEN) is likely to be effective in preventing a recurrence of PCP.

Patients entered in the study are randomly assigned to TMTX / LCV or to SMX/TMP for a 21-day trial. For the first 10 days, the trial is double-blind (neither patient nor physician knows which drugs the patient is receiving), and drugs are given by intravenous infusion. TMTX is given once every 24 hours and LCV every 6 hours; SMX/TMP is given every 6 hours. Doses are determined by body size. After the first 10 days, LCV and SMX/TMP may be given orally. Doses are adjusted or treatment is changed to intravenous PEN if side effects are too severe. During the 21-day trial, zidovudine (AZT) may not be used because of possible increased bone marrow toxicity. AZT may be resumed as soon as the patient's white cell count is acceptable. Aerosolized PEN therapy is begun 7 - 10 days after completion of therapy for the acute episode. PEN is inhaled once weekly for 4 weeks, then every 2 weeks for 48 weeks.

Ages Eligible for Study:  12 Years and above,  Genders Eligible for Study:  Both

Criteria

Inclusion Criteria

Concurrent Medication: Allowed:

• Acetaminophen:
• 650 mg prescribed as necessary for temperature > 38.7 degrees C. Acetaminophen should not be prescribed as a standing order for more than 48 hours.

Prior Medication: Allowed:

• Zidovudine (AZT) as long as such therapy is suspended prior to randomization and not reinstituted until therapy for the acute episode is completed and the patient's white blood cell count is acceptable.
• Other myelosuppressive therapies which may be handled in the same manner as AZT.
• Prophylaxis for Pneumocystis carinii pneumonia (PCP).
• Unequivocal diagnosis of Pneumocystis carinii pneumonia (PCP) by morphologic confirmation of three or more typical P. carinii organisms in sputum, bronchoalveolar lavage fluid, or lung tissue obtained by transbronchial or open-lung biopsy within 3 days before or after randomization. If morphologic confirmation is not possible prior to therapy, patients may be randomized if the investigator believes there is a high suspicion of PCP based on clinical presentation. If morphologic diagnosis cannot be established within 6 days of randomization, the patient will be withdrawn from study therapy. Resting (A-a) DO2 < 30 torr on room air. Patient, parent, guardian, or person with power of attorney gives informed consent.

Exclusion Criteria

Co-existing Condition: Patients will be excluded for the following reasons:

• History of Type I hypersensitivity (i.e., urticaria, angioedema, or anaphylaxis), exfoliative dermatitis, or other life-threatening reaction secondary to antibiotics containing sulfa, trimethoprim, or trimetrexate.
• History of life-threatening pentamidine toxicity.

Concurrent Medication: Excluded:

• Other drugs for the treatment or prevention of AIDS or Pneumocystis carinii pneumonia (PCP).
• Disalcid.
• Aspirin.
• Acetaminophen q4h as a standing order for more than 48 hours.

Prior Medication: Excluded within 14 days of study entry:

• Systemic steroids exceeding physiological replacement.
• Other investigational drugs including ganciclovir.
• Excluded within 6 weeks of study entry:
• Another antiprotozoal regimen for this episode for therapy of active Pneumocystis carinii pneumonia (PCP).
• Patients who are unable to have arterial blood gas analysis (ABG's) on room air.
• Patients for whom a liter of intravenous fluid (5 percent dextrose in water) per 24 hours, which is required to maintain blinding, would be medically inadvisable.

California
      Los Angeles County - USC Med Ctr, Los Angeles,  California,  90033,  United States
District of Columbia
      George Washington Univ Med Ctr, Washington,  District of Columbia,  20037,  United States
Florida
      Univ of Miami School of Medicine, Miami,  Florida,  331361013,  United States
Illinois
      Northwestern Univ Med School, Chicago,  Illinois,  60611,  United States
Louisiana
      Charity Hosp / Tulane Univ Med School, New Orleans,  Louisiana,  70112,  United States
      Louisiana State Univ Med Ctr / Tulane Med School, New Orleans,  Louisiana,  70112,  United States
      Tulane Univ School of Medicine, New Orleans,  Louisiana,  70112,  United States
Massachusetts
      Univ of Massachusetts Med Ctr, Worcester,  Massachusetts,  01655,  United States
New York
      SUNY / State Univ of New York, Syracuse,  New York,  13210,  United States
      SUNY - Stony Brook, Stony Brook,  New York,  117948153,  United States
      Univ of Rochester Medical Center, Rochester,  New York,  14642,  United States
      Mount Sinai Med Ctr, New York,  New York,  10029,  United States
      Jack Weiler Hosp / Bronx Municipal Hosp, Bronx,  New York,  10465,  United States
      Bronx Municipal Hosp Ctr/Jacobi Med Ctr, Bronx,  New York,  10461,  United States
      Montefiore Med Ctr / Bronx Municipal Hosp, Bronx,  New York,  10467,  United States
      SUNY / Erie County Med Ctr at Buffalo, Buffalo,  New York,  14215,  United States
      Beth Israel Med Ctr / Peter Krueger Clinic, New York,  New York,  10003,  United States
      City Hosp Ctr at Elmhurst / Mount Sinai Hosp, Elmhurst,  New York,  11373,  United States
Ohio
      Holmes Hosp / Univ of Cincinnati Med Ctr, Cincinnati,  Ohio,  452670405,  United States
      Univ Hosp of Cleveland / Case Western Reserve Univ, Cleveland,  Ohio,  44106,  United States
Pennsylvania
      Milton S Hershey Med Ctr, Hershey,  Pennsylvania,  170330850,  United States
      Thomas Jefferson Med College, Philadelphia,  Pennsylvania,  19107,  United States
South Carolina
      Julio Arroyo, West Columbia,  South Carolina,  29169,  United States

Study chairs or principal investigators

Sattler FR,  Study Chair

Study ID Numbers:  ACTG 029
Record last reviewed:  April 1999
Last Updated:  April 7, 2005
Record first received:  November 2, 1999
ClinicalTrials.gov Identifier:  NCT00001013
Health Authority: United States: Federal Government
ClinicalTrials.gov processed this record on 2005-04-08