RT Journal Article T1 Effectiveness of integrase strand transfer inhibitors in HIV-infected treatment-experienced individuals across Europe. A1 Rossetti, Barbara A1 Fabbiani, Massimiliano A1 Di Carlo, Domenico A1 Incardona, Francesca A1 Abecasis, Ana A1 Gomes, Perpetua A1 Geretti, Anna Maria A1 Seguin-Devaux, Carole A1 Garcia, Federico A1 Kaiser, Rolf A1 Modica, Sara A1 Shallvari, Adrian A1 Sönnerborg, Anders A1 Zazzi, Maurizio K1 HIV K1 INSTI K1 dolutegravir K1 effectiveness K1 elvitegravir K1 integrase strand transfer inhibitors K1 raltegravir K1 treatment-experienced AB To explore the effectiveness and durability of integrase strand transfer inhibitor (INSTI)-based regimens in pre-treated subjects. Treatment-experienced individuals starting an INSTI-based regimen during 2012-2019 were selected from the INTEGRATE collaborative study. The time to virological failure [VF: one measurement of viral load (VL) ≥ 1000 copies/mL or two ≥ 50 copies/ml or one VL measurement ≥ 50 copies/mL followed by treatment change] and to INSTI discontinuation were evaluated. Of 13 560 treatments analysed, 4284 were from INSTI-naïve, non-viraemic (IN-NV) individuals, 1465 were from INSTI-naïve, viraemic (IN-V) individuals, 6016 were from INSTI-experienced, non-viraemic (IE-NV) individuals and 1795 were from INSTI-experienced, viraemic (IE-V) individuals. Major INSTI drug resistance mutations (DRMs) were previously detected in 4/519 (0.8%) IN-NV, 3/394 (0.8%) IN-V, 7/1510 (0.5%) IE-NV and 25/935 (2.7%) IE-V individuals. The 1-year estimated probabilities of VF were 3.1% [95% confidence interval (CI): 2.5-3.8] in IN-NV, 18.4% (95% CI: 15.8-21.2) in IN-V, 4.2% (95% CI: 3.6-4.9) in IE-NV and 23.9% (95% CI: 20.9-26.9) in IE-V subjects. The 1-year estimated probabilities of INSTI discontinuation were 12.1% (95% CI: 11.1-13.0) in IN-NV, 19.6% (95% CI: 17.5-21.6) in IN-V, 10.8% (95% CI: 10.0-11.6) in IE-NV and 21.7% (95% CI: 19.7-23.5) in IE-V subjects. Both VF and INSTI discontinuation occur at substantial rates in viraemic subjects. Detection of DRMs in a proportion of INSTI-experienced individuals makes INSTI resistance testing mandatory after failure. PB Wiley-Blackwell Publishing Ltd. YR 2022 FD 2022-01-18 LK http://hdl.handle.net/10668/19961 UL http://hdl.handle.net/10668/19961 LA en NO Rossetti B, Fabbiani M, Di Carlo D, Incardona F, Abecasis A, Gomes P, et al. Effectiveness of integrase strand transfer inhibitors in HIV-infected treatment-experienced individuals across Europe. HIV Med. 2022 Aug;23(7):774-789. DS RISalud RD Apr 8, 2025