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We previously hosted a webinar on Carthera's SonoCloud trial, which uses a skull-implantable ultrasound device to open the blood-brain barrier so chemotherapy can better reach glioblastoma (GBM) tumors. Now, a new published study has shown that an investigational liquid biopsy tool (a blood test that detects cancer material circulating in the bloodstream) was able to detect tumor-derived vesicles released after paclitaxel chemotherapy treatment and that the detection of these vesicles correlated with survival. While more prospective validation is needed, these early findings give hope that doctors may soon have a real-time way to see whether this therapy is working.