“…When sequential chemotherapy offered, it is possible to overcome the drug resistance of single regimen used for a relatively longer period. Actually, the debate about maintenance therapy for advanced NSCLC had been re-ignited in recent years (Hosoe et al, 2003;Grossi et al, 2004;Chiappori et al, 2005;Pallis et al, 2006). The results of several randomized phase III studies reported showing a significant advantage of maintenance treatment in advanced NSCLC (Ciuleanu et al, 2007;Fidias et al, 2009;Cappuzzo et al, 2010).…”