Predictive Value of Soluble CD146 in Glioblastoma Patients

Condition(s) studied

Investigational drug(s) / intervention(s)

plasma collection: Plasma samples will be prospectively collected at relevant time points during patient treatment.

Study summary

Glioblastoma is the most common malignant primary brain tumor with poor prognosis because of its diffusive and infiltrative nature. The FDA approved the use of the anti-VEGF antibody bevacizumab in recurrent GBM. However, resistance to this anti-angiogenic reagent is frequent and fails to enhance patients' overall survival. The investigators previously identified one novel mechanism responsible for bevacizumab-resistance in CD146-positive glioblastoma (Joshkon et al. Acta Neuropathol Commun, 2022).

Now, the investigators objective is to prospectively monitor the soluble CD146 value in plasma from patients treated by bevacizumab for recurrent glioblastoma.

The investigators will collect plasma at baseline, before the first bevacizumab administration, before the second administration, at the time of first MRI evaluation and at progression. Plasma CD146 value will be analyzed by ELISA.

The investigators expect to confirm the correlation between soluble CD146 value in plasma and patient response to bevacizumab.

Eligibility

Primary outcome measure(s)

• correlation between soluble CD146 plasma value and patient response (RANO) — first evaluation (2 months)
  Soluble CD146 plasma value will be assessed using ELISA. Patient response will be evaluated by MRI and clinical response using the international RANO criteria.

Trial sites (1)

More Assistance Publique Hopitaux De Marseille trials in France

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