“…Moreover several studies reported response rates of over 50% with ECF, with apparently moderate toxicity and satisfactory symptom control (Ross et al, 2002;Hejna et al, 2006). And when it compared with FAMTX, it showed a higher response rate (45% vs 21%) and longer survival duration (8.9 months vs 5.7 months), with less myelosuppression, less mucositis, and better quality of life (Webb et al, 1997, Sumpter et al, 2005Lee et al, 2008;Allum et al, 2011;Chan et al, 2011). However, the protracted infusion of 5-FU is expensive, in addition it needs special infusion pump and a well educated patient, consequently, several studied tried to make it convenient either by using 5FU with high dose leucovorin on day 1and 8 in a cycle repeated every 21 days (Karapetis et al, 2010) or to use it biweekly (Felici et al, 2006) with significant benefits.…”