Clinical trial NCT00000811: A Study to Compare Different Drugs Used to Prevent Serious Bacterial Infections in HIV-Positive Children
Official title: A Randomized, Phase II/III, Double-Blind, Two-Armed Study of Micronized Atovaquone and Azithromycin (AT/AZ) as Compared to Trimethoprim-Sulfamethoxazole (TMP/SMX) in the Prevention of Serious Bacterial Infections When Used in Children Aged 3 Months to 19 Years With HIV Infection
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Bacterial Infections
Pneumonia, Pneumocystis Carinii
HIV Infections
Keywords: Trimethoprim-Sulfamethoxazole Combination
Pneumonia, Pneumocystis carinii
Drug Therapy, Combination
Acquired Immunodeficiency Syndrome
Antiprotozoal Agents
AIDS-Related Complex
Azithromycin
Bacterial Infections
atovaquone
Lead sponsor: National Institute of Allergy and Infectious Diseases (NIAID)
Sponsor class: NIH
Collaborators: name: Pfizer
name: Glaxo Wellcome
name: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
First posted: 2001-08-31
Enrollment: 690
Sex: ALL
Minimum age (years): 3
Maximum age (years): 18
Standard ages: CHILD
Accepts healthy volunteers: no
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This study compares 2 different treatments administered to try to prevent serious bacterial infections (such as pneumonia) in HIV-positive children. A combination of drugs (azithromycin plus atovaquone) will be compared to sulfamethoxazole-trimethoprim (SMX/TMP) alone. This study also evaluates the long-term safety and tolerance of these different drugs.

SMX/TMP is a commonly prescribed drug for the prevention of bacterial infections. However, the combination of azithromycin and atovaquone may be safer and more effective than SMX/TMP. This study compares the 2 treatments.

Detailed description: Although SMX/TMP remains the drug of choice for PCP prophylaxis, drug sensitivity may limit its use. Atovaquone has demonstrated greater safety than SMX/TMP and thus is suitable as a candidate drug for treatment and prophylaxis of PCP. Azithromycin, with a broad anti-microbial spectrum (including mycoplasma and atypical mycoplasma), is an attractive prophylactic agent for use in children with HIV infection, due to its relative safety and once-daily dosing regimen. Therefore, the combination of atovaquone and azithromycin may offer broader antimicrobial coverage and greater safety than SMX/TMP.

Patients are randomized to receive either SMX/TMP or combination micronized atovaquone/azithromycin. Crossover to the alternative regimen may occur if serious toxicity is observed. Patients are monitored for occurrence of serious bacterial infections or PCP breakthrough, and when a serious bacterial infection occurs, patients are crossed over to the alternative regimen. Treatment continues until 2 years after the last patient is enrolled. The first 30 patients will undergo a pharmacokinetic profile. Patients are followed every 4 weeks for the first 4 months, then every 8 weeks thereafter. \[AS PER AMENDMENT 05/28/99: This study was closed to infants and children age 19 months and older on 2/15/99; the study is now open to infants age 3 to 18 months (Stage II). Patients who are age 24 months or older at the time of Stage I closure will have end-of-study evaluations and will no longer be followed on protocol. Patients who are less than 24 months of age at the time of Stage I closure will be allowed to continue in the current version of the protocol. Enrollment for children age 3 to 18 months will continue until 50 subjects have been randomized. Because Stage II is an unblinded study, patients who are less than 24 months of age currently enrolled on Version 4.0 will have their study medication regimen unblinded and their atovaquone dose increased.\]

Eligibility criteria: Inclusion Criteria

Children may be eligible for this study if they:

* Are HIV-positive.
* Are between the age of 3 months and 18 months (consent of parent or guardian required). (This study has been changed. In an earlier version, patients up to 19 years old were eligible.)
* Are at risk for developing pneumonia and need preventive treatment.
* Have a CD4 count of less than 1,500 cells/mm3 if under 1 year of age or a CD4 count of less then 500 cells/mm3 if between 1 and 2 years of age.

Exclusion Criteria

Children will not be eligible for this study if they:

* Have an infection that requires treatment.
* Are allergic to atovaquone, azithromycin, or SMX/TMP.
* Have serious diarrhea for more than 1 week.

Primary outcomes:
Secondary outcomes:
Other outcomes:
Locations:
city: Birmingham
country: United States
facility: Univ of Alabama at Birmingham - Pediatric
state: Alabama
city: Mobile
country: United States
facility: Univ of South Alabama
state: Alabama
city: La Jolla
country: United States
facility: UCSD Med Ctr / Pediatrics / Clinical Sciences
state: California
city: Long Beach
country: United States
facility: Long Beach Memorial (Pediatric)
state: California
city: Los Angeles
country: United States
facility: Children's Hosp of Los Angeles/UCLA Med Ctr
state: California
city: Los Angeles
country: United States
facility: Los Angeles County - USC Med Ctr
state: California
city: Los Angeles
country: United States
facility: Cedars Sinai / UCLA Med Ctr
state: California
city: Los Angeles
country: United States
facility: UCLA Med Ctr / Pediatric
state: California
city: Los Angeles
country: United States
facility: Harbor - UCLA Med Ctr / UCLA School of Medicine
state: California
city: Oakland
country: United States
facility: Children's Hosp of Oakland
state: California
city: San Francisco
country: United States
facility: UCSF / Moffitt Hosp - Pediatric
state: California
city: Denver
country: United States
facility: Children's Hosp of Denver
state: Colorado
city: Farmington
country: United States
facility: Connecticut Children's Med Ctr
state: Connecticut
city: Farmington
country: United States
facility: Univ of Connecticut / Farmington
state: Connecticut
city: New Haven
country: United States
facility: Yale Univ Med School
state: Connecticut
city: Washington
country: United States
facility: Howard Univ Hosp
state: District of Columbia
city: Fort Lauderdale
country: United States
facility: North Broward Hosp District
state: Florida
city: Gainesville
country: United States
facility: Univ of Florida Gainesville
state: Florida
city: Jacksonville
country: United States
facility: Univ of Florida Health Science Ctr / Pediatrics
state: Florida
city: Miami
country: United States
facility: Univ of Miami (Pediatric)
state: Florida
city: Riviera Beach
country: United States
facility: Palm Beach County Health Dept
state: Florida
city: Atlanta
country: United States
facility: Emory Univ Hosp / Pediatrics
state: Georgia
city: Augusta
country: United States
facility: Med College of Georgia
state: Georgia
city: Chicago
country: United States
facility: Cook County Hosp
state: Illinois
city: Chicago
country: United States
facility: Univ of Illinois College of Medicine / Pediatrics
state: Illinois
city: Chicago
country: United States
facility: Chicago Children's Memorial Hosp
state: Illinois
city: Chicago
country: United States
facility: Univ of Chicago Children's Hosp
state: Illinois
city: New Orleans
country: United States
facility: Tulane Univ / Charity Hosp of New Orleans
state: Louisiana
city: New Orleans
country: United States
facility: Earl K Long Early Intervention Clinic
state: Louisiana
city: Baltimore
country: United States
facility: Univ of Maryland at Baltimore / Univ Med Ctr
state: Maryland
city: Baltimore
country: United States
facility: Johns Hopkins Hosp - Pediatric
state: Maryland
city: Boston
country: United States
facility: Children's Hosp of Boston
state: Massachusetts
city: Boston
country: United States
facility: Boston City Hosp / Pediatrics
state: Massachusetts
city: Springfield
country: United States
facility: Baystate Med Ctr of Springfield
state: Massachusetts
city: Worcester
country: United States
facility: Univ of Massachusetts Med School
state: Massachusetts
city: Detroit
country: United States
facility: Children's Hosp of Michigan
state: Michigan
city: Jackson
country: United States
facility: Univ of Mississippi Med Ctr
state: Mississippi
city: Camden
country: United States
facility: Cooper Hosp - Univ Med Ctr / UMDNJ - New Jersey Med Schl
state: New Jersey
city: New Brunswick
country: United States
facility: UMDNJ - Robert Wood Johnson Med School / Pediatrics
state: New Jersey
city: Newark
country: United States
facility: Univ of Medicine & Dentistry of New Jersey / Univ Hosp
state: New Jersey
city: Newark
country: United States
facility: Saint Joseph's Hosp and Med Ctr/UMDNJ - New Jersey Med Schl
state: New Jersey
city: Albany
country: United States
facility: Children's Hosp at Albany Med Ctr
state: New York
city: Bronx
country: United States
facility: Bronx Lebanon Hosp Ctr
state: New York
city: Bronx
country: United States
facility: Montefiore Med Ctr Adolescent AIDS Program
state: New York
city: Brooklyn
country: United States
facility: SUNY - Brooklyn
state: New York
city: Buffalo
country: United States
facility: Children's Hosp Pact Prog / Children's Hosp of Buffalo
state: New York
city: Great Neck
country: United States
facility: North Shore Univ Hosp
state: New York
city: New Hyde Park
country: United States
facility: Schneider Children's Hosp
state: New York
city: New York
country: United States
facility: Beth Israel Med Ctr / Pediatrics
state: New York
city: New York
country: United States
facility: Bellevue Hosp / New York Univ Med Ctr
state: New York
city: New York
country: United States
facility: Cornell Univ Med College
state: New York
city: New York
country: United States
facility: Metropolitan Hosp Ctr
state: New York
city: New York
country: United States
facility: Mount Sinai Med Ctr / Pediatrics
state: New York
city: New York
country: United States
facility: Columbia Presbyterian Med Ctr
state: New York
city: New York
country: United States
facility: Incarnation Children's Ctr / Columbia Presbyterian Med Ctr
state: New York
city: New York
country: United States
facility: Harlem Hosp Ctr
state: New York
city: Rochester
country: United States
facility: Univ of Rochester Med Ctr
state: New York
city: Rochester
country: United States
facility: Univ of Rochester Medical Center
state: New York
city: Stony Brook
country: United States
facility: State Univ of New York at Stony Brook
state: New York
city: Syracuse
country: United States
facility: SUNY Health Sciences Ctr at Syracuse / Pediatrics
state: New York
city: Durham
country: United States
facility: Duke Univ Med Ctr
state: North Carolina
city: Columbus
country: United States
facility: Columbus Children's Hosp
state: Ohio
city: Philadelphia
country: United States
facility: Children's Hosp of Philadelphia
state: Pennsylvania
city: Philadelphia
country: United States
facility: Saint Christopher's Hosp for Children
state: Pennsylvania
city: Charleston
country: United States
facility: Med Univ of South Carolina
state: South Carolina
city: Memphis
country: United States
facility: Saint Jude Children's Research Hosp of Memphis
state: Tennessee
city: Nashville
country: United States
facility: Vanderbilt Univ Med Ctr
state: Tennessee
city: Houston
country: United States
facility: Hermann Hosp / Univ Texas Health Science Ctr
state: Texas
city: Houston
country: United States
facility: Texas Children's Hosp / Baylor Univ
state: Texas
city: Norfolk
country: United States
facility: Children's Hosp of the King's Daughters
state: Virginia
city: Richmond
country: United States
facility: Med College of Virginia
state: Virginia
city: Seattle
country: United States
facility: Children's Hospital & Medical Center / Seattle ACTU
state: Washington
city: Bayamon
country: Puerto Rico
facility: Ramon Ruiz Arnau Univ Hosp / Pediatrics
city: San Juan
country: Puerto Rico
facility: Univ of Puerto Rico / Univ Children's Hosp AIDS
city: San Juan
country: Puerto Rico
facility: San Juan City Hosp
Study officials:
name: Wayne M Dankner
role: STUDY_CHAIR
name: Ram Yogev
role: STUDY_CHAIR
name: Walter T Hughes
role: STUDY_CHAIR
References:
citation: Ngo LY, Yogev R, Dankner WM, Hughes WT, Xu J, Unadkat J. Pharmacokinetics of azithromycin (AZ) when administered alone and with atovaquone (AT). Conf Retroviruses Opportunistic Infect. 1998 Feb 1-5;5th:174 (abstract no 506)
citation: Ngo LY, Yogev R, Dankner WM, Hughes WT, Burchett S, Xu J, Sadler B, Unadkat JD. Pharmacokinetics of azithromycin administered alone and with atovaquone in human immunodeficiency virus-infected children. The ACTG 254 Team. Antimicrob Agents Chemother. 1999 Jun;43(6):1516-9. doi: 10.1128/AAC.43.6.1516.
citation: Perrier M, Schwarz T, Gonzalez O, Brounts S. Squamous cell carcinoma invading the right temporomandibular joint in a Belgian mare. Can Vet J. 2010 Aug;51(8):885-7.