Observational studyTargeted oncology2016
Secondary Metastases Resection After Bevacizumab Plus Irinotecan-Based Chemotherapy in First-Line Therapy of Metastatic Colorectal Cancer in a Real-Life Setting: Results of the ETNA Cohort.
Observational study in Targeted oncology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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15 authors.
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Abstract
purposeResection of metastases after chemotherapy improves survival outcomes of patients with initially inoperable metastatic colorectal cancer (mCRC), yet little data is available for those treated in the first-line setting with bevacizumab plus irinotecan. To provide data on this, the present study described the subgroup of the ETNA cohort who underwent metastases surgery.
methodsThe population of operated patients was described according to metastatic site (exclusively hepatic, non-exclusively hepatic, and non-hepatic). Factors associated with overall survival (OS) and progression-free survival (PFS) were evaluated using multivariable Cox analysis.
resultsA total of 76 patients (21.1 % of the ETNA cohort) underwent metastases resection: 50 % male, median age 61.9 years, 85.5 % ECOG ≤ 1, and median duration of bevacizumab use 7.2 months. No surgery-related deaths were observed and 30.6 % of patients had at least one post-operative complication, mainly infections (11.8 % of resections), bleeding complications (3.5 %), or delayed wound healing (2.4 %). Complete remission was higher for those with exclusively hepatic metastases (22/32, 68.8 %) than those with non-exclusively hepatic metastases (12/24, 50.0 %), or non-hepatic metastases (12/20, 60.0 %). Among operated patients, 52.6 % had died after 5 years of follow-up. In multivariable analysis at 2 years of follow-up, death (HR 0.09 [95 % CI 0.02-0.35]) and progression (HR 0.35 [95 % CI 0.23-0.56]) were less likely for patients with complete remission (CR) after surgery R0-R1 or radiofrequency ablation (RFA) [CR RFA] compared with those who were not resected or with R2 resection.
conclusionIn real-life practice, bevacizumab with irinotecan in first-line therapy for mCRC allows secondary resection of metastases and survival is more favourable in those with complete remission (R0-R1/CR RFA).
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