A phase I trial of human corticotropin-releasing factor (hCRF) in patients with peritumoral brain edema

Annals of Oncology : Official Journal of the European Society for Medical Oncology
M A Villalona-CaleroD D Von Hoff

Abstract

Human corticotropin-releasing factor (hCRF) is an endogenous peptide responsible for the secretion and synthesis of corticosteroids. In animal models of peritumoral brain edema, hCRF has significant anti-edematous action. This effect, which appears to be independent of the release of adrenal steroids, appears mediated by a direct effect on endothelial cells. We conducted a feasibility and phase I study with hCRF given by continuous infusion to patients with brain metastasis. Peritumoral brain edema documented by MRI and the use of either no steroids or stable steroid doses for more than a week were required. MRIs were repeated at completion of infusion and estimations by dual echo-image sequence (Proton density and T2-weighted images) of the amount of peritumoral edema were performed. The study was performed in two stages. In the feasibility part, patients were randomized to receive either 0.66 or 1 microgram/kg/h of hCRF or placebo over 24 hours. The second part was a dose finding study of hCRF over 72 hours at escalating doses. Seventeen patients were enrolled; only one was receiving steroids (stable doses) at study entrance; dose-limiting toxicity (hypotension) was observed at 4 micrograms/kg/h x 72 hours in two out of four ...Continue Reading

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