Durability and tolerability of first-line regimens including two nucleoside reverse transcriptase inhibitors and raltegravir or ritonavir boosted-atazanavir or -darunavir: data from the ICONA Cohort*. Issue 2 (4th March 2018)

• Record Type: Journal Article
• Authors: d'Arminio Monforte, Antonella; Lorenzini, Patrizia; Cozzi-Lepri, Alessandro; Mussini, Cristina; Castagna, Antonella; Baldelli, Franco; Puoti, Massimo; Vichi, Francesca; Maddaloni, Adelaide; Lo Caputo, Sergio; Gianotti, Nicola; Antinori, Andrea
• Is Part Of: HIV clinical trials. Volume 19:Issue 2(2018)
• Page Start: 52
• Page End: 60
• Publication Date: 2018-03-04
• Subjects: Cohort study -- antiretroviral regimens -- therapy discontinuation -- raltegravir -- boosted-atazanavir -- boosted-darunavir; HIV Infections -- Chemotherapy -- Periodicals; AIDS (Disease) -- Chemotherapy -- Periodicals; HIV Infections -- Research -- Periodicals; AIDS (Disease) -- Research -- Periodicals; 616.979206105
• DOI: 10.1080/15284336.2018.1440691
• Languages: English
• ISSNs: 1528-4336

Abstract

Abstract : Background: We aimed to mimic the ACTG 5257 trial, comparing raltegravir (RAL), ritonavir-boosted atazavavir (ATV/r) and ritonavir-boosted darunavir (DRV/r) in the observational setting. Methods: All the ICONA patients starting a first cART with 2NRTI + ATV/r, DRV/r or RAL were included. Primary end-point was treatment failure, i.e. virological failure (confirmed HIV-RNA > 200copies/mL > 6 months therapy) or discontinuation for any reason of the third drug. Secondary end-points: virological failure50 (50 copies/mL threshold), and discontinuation of the third drug due to intolerance/toxicity. Cox regression analyses were run to compare the risk of outcomes between the three regimens. Results: 2249 patients were included, 985 (44%) initiated ATV/r, 1023 (45%) DRV/r and 241 (11%) RAL; median follow-up of 3.6 years (IQR: 2.3–5.2). After controlling for baseline confounding factors, patients given ATV/r showed a 26% higher risk of treatment failure (TF) vs. DRV/r (AHR 1.26, 95%CI 1.11–1.43); patients on RAL had a lower risk of TF vs. ATV/r (AHR 0.81, 95%CI 0.66–0.99). The probability of virological failure50 was significantly lower for people initiating RAL vs. DRV/r (AHR 0.46, 95%CI 0.24–0.87) or ATV/r (AHR 0.52, 95%CI 0.27–0.99). In addition, RAL was associated to a lower risk of discontinuation for toxicity vs. both DRV/r (AHR: 0.37, 95%CI: 0.19–0.72) and ATV/r (AHR: 0.18, 95%CI: 0.09–0.34). ATV/r was associated with a higher risk of discontinuing due to toxicity (AHR 2.09, 95%CI 1.63–2.67) vs. DRV/r. Conclusions: In our observational study, we confirmed higher risk of treatment failure and lower tolerability of ATV/r-based regimens as compared to those including DRV/r or RAL.