An individual patient data (IPD) meta-analysis of the impact of thrombocytosis (?plts) on overall survival (OS) whilst using an intermittent chemotherapy (iCTx) strategy in advanced colorectal cancer (aCRC).

2017 
e15044Background: iCTx in pts with aCRC offers potential for improvement in QoL. The COIN trial is the largest study to compare iCTx v. continuous strategies in aCRC, a pre-specified subgroup analysis of 16 baseline factors was undertaken among pts with stable or responding disease after 3 mths of first-line therapy to see if the relative treatment effect differed by subgroup. Baseline ⇡plts alone identified a group of pts with significantly worse OS when an iCTx strategy was applied. Here we seek to validate this finding in other intermittent strategy trials. Methods: Published RCTs of iCTx in aCRC were identified via literature review. Eligible trials could allow one or more re-introductions of “full” initial regimen either upon progression or after a set period of time. Outcome and platelet data were requested and collated into a central database. The COIN trial was declared the discovery dataset and other eligible trials the validating datasets. Two co-primary hypotheses were agreed based upon the COI...
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