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Published on: April 9, 2014
Switch from ritonavir to indinavir in combination therapy for HIV-1-infected children
Stephen I Pelton1, Kenneth Stanley, Ram Yogev
1Boston Medical Center, Boston, MA 02118, USA. spelton@bu.edu
Insights
Switching from ritonavir to indinavir in combination antiretroviral therapy for children with HIV-1 was a viable strategy. This change maintained viral load control and CD4 cell counts without significant pharmacokinetic alterations.
Area of Science:
- Pediatric infectious diseases
- Antiretroviral therapy
- HIV-1 management
Background:
- Protease inhibitors are crucial in combination antiretroviral treatment for children with HIV-1.
- Alternative therapeutic strategies are sometimes needed due to tolerance or toxicity issues with protease inhibitors.
Purpose of the Study:
- To evaluate the efficacy and safety of switching from ritonavir to indinavir in pediatric HIV-1 treatment.
- To compare outcomes between children switched to indinavir and those continuing ritonavir.
Main Methods:
- A randomized clinical trial involving HIV-1 infected children aged 2-17 years.
- A switch from ritonavir capsules to indinavir capsules for 25 children when ritonavir became unavailable.
- A matched-pairs analysis comparing the indinavir group with a ritonavir group.
Main Results:
- No significant differences in HIV-1 RNA load (
- No significant differences in median CD4 cell counts over time between the groups.
- Observed toxicities with indinavir were consistent with known side effects; no significant pharmacokinetic interactions were noted.
Conclusions:
- Switching from ritonavir to indinavir is a practical therapeutic strategy in pediatric HIV-1 combination antiretroviral treatment.
- This switch effectively maintained viral suppression and immunological status.
Background:
Protease inhibitors are an effective component of combination antiretroviral treatment for children infected with human immunodeficiency virus 1 (HIV-1), but tolerance or toxicity issues sometimes require an alternative therapeutic strategy.
Methods:
HIV-1-infected children aged 2-17 years received combination therapy with either stavudine plus ritonavir or with zidovudine, lamivudine, and ritonavir as part of a randomized clinical trial. Twenty-one months after the start of the trial, ritonavir in capsule formulation became unavailable. The treatment regimen for 25 children was switched from ritonavir capsules to indinavir capsules (500 mg/m(2) every 8 h). The other study drugs remained unchanged. A matched-pairs analysis was performed to compare the results for these 25 children with the results for 25 matched children whose treatment regimen continued to include ritonavir (in liquid formulation).
Results:
There were no significant differences in the percentage of children with an HIV-1 RNA load of
Conclusions:
The switch from one protease inhibitor (ritonavir) to another (indinavir) as a component of combination antiretroviral treatment in this patient population was a practical therapeutic strategy.
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