Figure 1. Show PFS of all patient treated with platinum +5-FU +cetuximab (A); and stratified by platinum (B): carboplatin +5-FU+cetuximab versus cisplatin +5-FU+cetuximab.

Analysis was performed using log-rank test. Abbreviations: PFS stands for progression-free-survival; C stands for platinum (carboplatin or cisplatin); 5-FU stands for 5-fluourouracil.