He is a founder of the EuResist Network (a European collaborative network devoted to investigating response to antiviral therapy), the President of the ARCA (Antiviral Response Cohort Analysis) collaborative study, a member of the Management Board of the VIRONET-C Foundation (focusing on viral hepatitis) and of the PRESTIGIO Registry (collecting data and samples from people living with multidrug resistant HIV). He has led or participated to many European and Italian projects and has been an investigator in many contracts with pharmaceutical companies in the area of (i) advanced HIV virology, (ii) HIV drug resistance, (iii) antiviral drug discovery.