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Our objective was to assess therapeutic non-inferiority of dual treatment with lopinavir–ritonavir and lamivudine to triple treatment with lopinavir–ritonavir plus two nucleos(t)ides for maintenance of HIV-1 viral suppression.

In this randomised, open-label, non-inferiority trial, we recruited patients from 32 HIV units in hospitals in Spain and France. Eligible patients were HIV-infected adults (aged ≥18 years) with HIV-1 RNA of less than 50 copies per mL, for at least 6 months on triple treatment with lopinavir–ritonavir (twice daily) plus lamivudine or emtricitabine and a second nucleos(t)ide, with no resistance or virological failure to these drugs, and no positive hepatitis B serum surface antigen. Investigators at each centre randomly assigned patients (1:1; block size of four; stratified by time to suppression [<1 year or >1 year] and nadir CD4 cell count [<100 cells per μL or >100 cells per μL]; computer …