To examine whether or not the overexpressed eEF2 gene was non-mutated, wild-type, the 5′ (84–1334 nt) and the 3′ (1314–2660 nt) sequences of eEF2 mRNA (coding sequence: 84-2660 nt) from five lung adenocarcinomas and five HNSCCs were amplified by RT-PCR and direct sequencing. Here, EEF2 is linked to lung adenocarcinoma.