Relationship between Expression of TTF-1, TS and Chemotherapy Effect of Pemetrexed in Advanced Lung Adenocarcinoma
World Journal of Cancer Research
Objective: To investigate the relationship between expression of TTF-1, TS and chemotherapy effect of pemetrexed in advanced lung adenocarcinoma. Methods: Eighty patients with advanced lung adenocarcinoma treating by pemetrexed were enrolled in this study and their tumor samples were collected retrospectively for analysis. The expression of TTF-1, TS protein in tumor samples was detected by the immunohistochemical method. The data of therapeutical effect and toxicity were collected and
... lected and analyzed. Results: The TTF-1 positive staining accounted for 71.25% (57/80). The TS positive staining accounted for 22.50% (18/80). TTF-1 and TS expression in lung cancer tissues had negative correlation (r = −0.356, P = 0.002). The response rate (CR + PR) was 46.25%. The efficiency of patients with over-expression of TTF-1 (64.91%) was significant higher than patients with low-expression of TTF-1 (39.13%) (P < 0.05). The efficiency of patients with over-expression of TS (27.78%) was significant lower than patients with low-expression of TS (51.61%) (P < 0.05). The efficiency, median progress time and 1-survival rate of patients with over-expression TS and low-expression of TTF-1 (28.57%, 3.9 months, 28.6%) were all significant lower than patients with over-expression TTF-1 and low-expression of TS (81.13%, 7.4 months, 69.8%) (P < 0.05). Conclusions: The expression of TTF-1 and TS is associated with chemotherapy effect of pemetrexed in advanced lung adenocarcinoma and can be used to detect the sensitivity.