“…Elevated levels of metabolites such as hydroxylamine and octadecan-1-ol were observed in patients with advanced stage disease, who did not survive chemotherapy (Hao et al, 2016b, Hao et al, 2016a). On the other hand, amino acids glutamine, proline, valine, threonine and tyramine were abundant in patients in early stages of the disease, who had higher survival rates (Hao et al, 2016b, Hao et al, 2016a). Interestingly, metabolites such as glycine, phosphoric acid, pyroglutamic acid and octadecenoic acid are associated with advanced disease as well as higher survival and knowledge of these metabolites may prove useful in determination of an effective line of treatment for stage III-IV lung tumor patients (Hao et al, 2016b, Hao et al, 2016a).…”