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TTF-1 Expression Predicts the Merit of Additional Antiangiogenic Treatment in Non-squamous Non-small Cell Lung Cancer.
Anticancer Research 2018 September
BACKGROUND/AIM: To investigate whether TTF-1 expression predicts a beneficial response of non-squamous non-small-cell lung cancer (NS-NSCLC) patients to bevacizumab.
PATIENTS AND METHODS: We retrospectively screened 118 advanced NS-NSCLC patients who were treated with pemetrexed plus platinum derivatives alone (Bev(-)) or with bevacizumab (Bev(+)), and investigated the relationship between expression of TTF-1 and treatment outcomes.
RESULTS: Among the 92 TTF-1-positive patients, clinical outcomes in the Bev(+) group were significantly better than those in the Bev(-) group (response rate, 51.4% vs. 27.3%, p=0.027; median progression-free survival, 216 days vs. 137 days, p=0.012). Overall survival in the Bev(+) group tended to be longer than that in the Bev(-) group. However, the addition of bevacizumab to the standard treatment of 26 TTF-1-negative patients offered no clinical benefit.
CONCLUSION: TTF-1 expression may serve as a predictive marker to identify patients who may benefit from the addition of bevacizumab to platinum doublet therapy.
PATIENTS AND METHODS: We retrospectively screened 118 advanced NS-NSCLC patients who were treated with pemetrexed plus platinum derivatives alone (Bev(-)) or with bevacizumab (Bev(+)), and investigated the relationship between expression of TTF-1 and treatment outcomes.
RESULTS: Among the 92 TTF-1-positive patients, clinical outcomes in the Bev(+) group were significantly better than those in the Bev(-) group (response rate, 51.4% vs. 27.3%, p=0.027; median progression-free survival, 216 days vs. 137 days, p=0.012). Overall survival in the Bev(+) group tended to be longer than that in the Bev(-) group. However, the addition of bevacizumab to the standard treatment of 26 TTF-1-negative patients offered no clinical benefit.
CONCLUSION: TTF-1 expression may serve as a predictive marker to identify patients who may benefit from the addition of bevacizumab to platinum doublet therapy.
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