A phase I trial of the oral hedgehog inhibitor taladegib (LY2940680) in combination with weekly paclitaxel in patients with advanced, solid tumours.
2017
2594Background: Aberrant Hedgehog (Hh) signaling is implicated in carcinogenesis and is associated with poor prognosis in multiple tumours types. Hh inhibitors increase sensitivity to paclitaxel in taxane-resistant cell lines. Taladegib is an orally bioavailable, potent inhibitor of Smoothened, a key Hh pathway component, with activity in basal cell carcinoma. The single agent recommended dose is 400mg od. We present the dose escalation phase of a phase I study of weekly paclitaxel with oral taladegib. Methods: Primary objective: determine the dose limiting toxicity (DLT) and maximum tolerated dose (MTD) of taladegib on a continuous oral daily dosing regimen in combination with paclitaxel (80mg/m2, iv, day 1, 8 and 15 q 28) in patients with advanced solid cancers. Secondary objectives: assess the safety and tolerability, determine the recommended phase II dose (RP2D), and evaluate the pharmacokinetics of taladegib and paclitaxel. Exploratory objective: assess preliminary efficacy. A standard 3 + 3 dose es...
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