Lopinavir/Ritonavir Monotherapy Versus Standard Highly Active Antiretroviral Therapy (HAART) in HIV/HCV Coinfected Patients Starting Treatment With Anti-Hepatitis C Virus (HCV) Therapy

This is a pilot, randomised, open label, controlled clinical trial. All eligible patients(CD4\>350, HIV RNA\<50 copies and no PI mutations) will be randomized (1:1) to receive LPV/r new tabs (200/50 mg, 2 cpr BID) monotherapy (arm A) or LPV/r + selected NUCS (arm B) associated to anti-HCV therapy for 12 months. The number of subjects to recruit, in each arm of the study, is equal to 25, the total number of subjects to enrol will be 50. * Group A: will receive LPV/r monotherapy and anti HCV drugs for 12 months. * Group B: will receive LPV/r+ selected NUCS and anti HCV drugs for 12 months. All the patients will be followed-up for six months after the end of anti-HCV drugs for the evaluation of Sustained Virological Response (SVR). At the end of the co-treatment for HCV/HIV, each subject will be treated for HIV infection according to physician decisions.As anti-HCV drugs the patients will receive PEG-IFNa 2a 180 mcg/week + Ribavirin 1-1.2 g/day .At the end of the third month of combined therapy, only patients who reach an early virological response will continue anti-HCV drugs.