Study of Biologic Tumor and Plasma Biomarkers of Response to TTFields in Patients Treated for Newly Diagnosed Glioblastoma

"For each included patient, blood samples will be collected during baseline visit (before initiation of radio-chemotherapy), then before initiation of TTFields and every 3 months during TTFields treatment. Additional blood samples will be scheduled at recurrence (if applicable).~Moreover, tumor samples (formalin paraffin embedded (FFPE) tumor block and fresh samples) will be collected from surgery specimen on primary tumor by the sponsor for analysis. In case of recurrence, and if a second surgery is possible, tumor samples will also be collected.~Tumor samples will be collected from biopsies taken in the course of routine practice and from surgical specimens collected during surgical procedure."