Journal
CANCER TREATMENT REVIEWS
Volume 40, Issue 4, Pages 485-494Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ctrv.2013.09.012
Keywords
Biologic agents; Breast cancer; Chemotherapy; Colorectal cancer; Maintenance therapy; Meta-analysis; Metastatic disease; Randomized clinical trial; Non-small cell lung cancer
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Breast, colorectal and lung cancers represent the three most incident forms of cancer worldwide. Among these three big killers, lung cancer is considered the one with the worst prognosis due to its high mortality even in early stages. Due to their more favorable prognosis, breast and colorectal cancers might appear to have benefited from major advances. Most oncologists who are faced with metastatic non-small-cell lung cancer (NSCLC) find the reported results very frustrating when compared with those for metastatic breast (MBC) and colorectal cancers (MCRC). The aim of this analysis was to quantify and compare the relative magnitude of overall survival (OS) improvements in the first-line approaches in metastatic NSCLC, MBC and MCRC through the analysis of the main landmark meta-analyses and randomized clinical trials (RCTs) of commercially available drugs. Five items were considered and analyzed for each cancer. Moreover we evaluated the real clinical impact of the results reported by each item on the entire population; for each big killer an overall hazard ratio (HR) was estimated: 0.88 (95%(+) CI: 0.72-1.07) for MBC, 0.94 (95%(+) CI: 0.82-1.07) for MCRC, and about 0.80 (95%(+) CI: 0.73-0.90) for advanced NSCLC. We showed that, in the last decades, these three tumors had important and constant OS improvements reached step by step. The relative magnitude of OS improvement seems higher in metastatic NSCLC than MBC and MCRC. (C) 2013 Elsevier Ltd. All rights reserved.
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