Correlation of Rash with Survival on FLEX Trial: Predictive or Prognostic?

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Completing our tour of clinical factors that we might use for predicting benefit with the EGFR monoclonal antibody Erbitux (cetuximab) in the FLEX trial is the development of a rash. We're actually discussing rash separately from the other clinical factors from the FLEX trial that we discussed in the prior post for a couple of reasons.