Indole DKAs are also inhibitors of the interaction between HIV-1 IN and the cellular cofactor LEDGF/p75 (Lens Epithelium Derived Growth Factor) [35e42]. Problems related to drug-resistant strains observed with the use of Raltegravir has highlighted the necessity to identify molecules able to target different steps in the integration process [43]. LEDGF/p75 is a cellular protein that has been identified as a cellular cofactor of HIV integration and replication [44,45]. It binds HIV-1 IN via a small IN-binding domain (LEDGFIBD) within its C-terminal region and several studies pointed out the essentia role of LEDGF/p75 in viral replication and fitness [46e51]. Therefore, the development of proteineprotein disrupting therapeutics is currently a very important pharmacological target to improve available HAART. In particular, “dual inhibitors” able to interfere with distinct steps of the integration process are very attractive, since a multimode mechanism of action could result in cooperative inhibition of DNA integration and HIV-1 replication in infected cells.