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Updated: Mar 22, 2026
10:29
Quantitative Structure-Activity Relationship, Activity Prediction, and Molecular Dynamics of Non-nucleotide Reverse Transcriptase Inhibitors
Published on: May 9, 2025
2.6K
Nonnucleoside Reverse-transcriptase Inhibitor- vs Ritonavir-boosted Protease Inhibitor-based Regimens for Initial
Álvaro H Borges1, Andreas Lundh2, Britta Tendal3
1Centre for Health & Infectious Diseases Research, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen.
Summary
This meta-analysis found no significant differences in major clinical outcomes like death or AIDS progression between nonnucleoside reverse-transcriptase inhibitor (NNRTI)-based and ritonavir-boosted protease inhibitor (PI/r)-based HIV therapies.
Area of Science:
- Infectious Diseases
- Immunology
- Pharmacology
Background:
- Previous research indicated nonnucleoside reverse-transcriptase inhibitors (NNRTIs) offer faster virologic suppression, while ritonavir-boosted protease inhibitors (PI/r) enhance CD4 cell recovery.
- However, individual clinical trials lacked the power to definitively compare the long-term clinical outcomes of these two antiretroviral therapy classes.
Purpose of the Study:
- To conduct a meta-analysis comparing the clinical efficacy and safety of initial nonnucleoside reverse-transcriptase inhibitor (NNRTI)-based versus ritonavir-boosted protease inhibitor (PI/r)-based antiretroviral therapies.
- To evaluate differences in mortality, AIDS progression, virologic suppression, CD4 cell count recovery, and treatment discontinuation rates.
Main Methods:
- A systematic search of databases identified randomized controlled trials comparing NNRTI-based with PI/r-based initial HIV therapy.
- A meta-analysis was performed to calculate risk ratios (RRs) and mean differences (MDs) for primary outcomes (death or AIDS progression) and secondary outcomes (virologic suppression, CD4 cell recovery, treatment discontinuation).
Main Results:
- The meta-analysis included 29 trials with 9047 participants. No significant differences were observed in the rates of death or progression to AIDS between NNRTI and PI/r arms.
- Treatment discontinuation rates were comparable, although discontinuation due to virologic failure was more frequent in the NNRTI group.
- At 48 weeks, no significant differences were found in virologic suppression or CD4(+) cell count recovery between the two treatment strategies.
Conclusions:
- This comprehensive meta-analysis demonstrates that initial HIV therapy with nonnucleoside reverse-transcriptase inhibitors (NNRTIs) and ritonavir-boosted protease inhibitors (PI/r) yields similar clinical and viro-immunologic outcomes.
- The findings suggest that treatment decisions can be based on other factors, such as tolerability and patient preference, rather than solely on predicted clinical outcomes.
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