A Comparison of Two Anti-HIV Drug Regimens for Youth Who Have Failed Prior Therapy

National Institute of Allergy and Infectious Diseases (NIAID)

Status and phase

Completed

Phase 2

Conditions

HIV Infections

Treatments

Drug: Zidovudine

Drug: Abacavir sulfate

Drug: Lamivudine

Drug: Saquinavir

Drug: Emtricitabine

Drug: Lopinavir/ritonavir

Drug: Tenofovir disoproxil fumarate

Study type

Interventional

Funder types

NIH

Identifiers

NCT00102206

PACTG P1053

P1053

10131 (Registry Identifier)

Details and patient eligibility

About

HIV infected children and adolescents who have taken many anti-HIV drugs may have limited treatment options and are at high risk for progressing to AIDS. The purpose of this study is to determine whether an anti-HIV treatment regimen of 2 protease inhibitors (PIs) and 2 nucleoside reverse transcriptase inhibitors (NRTIs) is more effective than a regimen of 4 NRTIs in treatment-experienced children and adolescents who have failed previous anti-HIV treatment.

Full description

HIV infected children and adolescents on anti-HIV treatment regimens have traditionally had more difficulty with non-adherence and drug resistance than adults, often resulting in virologic failure. Additionally, HIV infected children with extensive exposure to antiretrovirals (ARVs) are likely to have fewer therapeutic options for salvage therapy, and their physicians find it difficult to choose regimens that will keep the HIV infection under control. This study will compare the efficacy of three 4-drug ARV salvage regimens in treatment-experienced, HIV infected children and adolescents who have experienced virologic failure.

This study will last at least 96 weeks. Participants will be randomly assigned to one of three groups. Group 1A will receive a dual-PI based regimen of lopinavir/ritonavir (LPV/r), saquinavir (SQV), and the NRTIs emtricitabine (FTC) and abacavir sulfate (ABC). Group 1B will receive a dual-PI based regimen of LPV/r, SQV, FTC, and tenofovir disoproxil fumarate (TDF). Group 2 will receive an NRTI-only regimen of ABC, lamivudine, zidovudine, and TDF.

There will be 11 study visits during Step I of this study. Medical history, a physical exam, and blood collection will occur at all visits. Dual-energy x-ray absorptiometry (DEXA) scans will occur at study entry and at Weeks 24, 48, 72, and 96. Urine collection will occur at most visits; participants will also take part in adherence modules at most visits. Participants will be asked to complete a pill count form at Weeks 4 and 24. Additionally, some study participants will be asked to participate in an intensive pharmacokinetics study at Week 4.

Enrollment

6 patients

Sex

All

Ages

4 to 21 years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria for Step I:

HIV infected
No currently available therapeutic options that would likely result in long-term suppression of virus to less than 400 copies/ml
Two measurements within 4 months prior to screening and at screening of either CD4% of less than 15% and HIV viral load of greater than 10,000 copies/ml OR HIV viral load greater than 30,000 copies/ml
Previous exposure to non-nucleoside reverse transcriptase inhibitors (NNRTIs), NRTIs, and PIs AND have experienced virologic failure. More information on previous treatment regimen requirements is available in the protocol.
Prior or current virologic failure with genotypic or phenotypic resistance OR historical virologic failure with a PI- or NNRTI-containing regimen
Resistance to 2 or more drugs in most recent treatment regimen within 26 weeks prior to study screening
Able and willing to swallow study medications
Parent or guardian willing to provide informed consent, if applicable
Willing to use acceptable methods of contraception

Exclusion Criteria for Step I:

Previous cumulative exposure to TDF for more than 24 weeks OR more than 14 days of TDF exposure during the 24 weeks prior to study entry
Grade 1 lipase or higher within 28 days prior to study entry
Grade 3 or higher laboratory abnormality (except for lipase) within 28 days prior to study entry
History of allergy or hypersensitivity to any of the study drugs
Active CDC Stage C opportunistic infection or serious bacterial infection requiring therapy at the time of screening
Chemotherapy for active cancer
Require certain medications
Abnormal kidney function
Any clinically significant diseases other than HIV infection or findings during medical history screening that, in the opinion of the investigator, may interfere with the study
Pregnancy or breastfeeding