Recurrent glioblastoma patients treated with bevacizumab combination therapy were included in the study.
Gene expression profiling of tumor tissue was performed by a customized NanoString platform covering 800 genes.
Expression of angiotensinogen and HLA class II genes were identified as independent predictors for bevacizumab response.
The two genes were included in a predictive model for response.
The predictive model, if validated, can be used to identify patients benefitting from bevacizumab combination therapy.