Abstract

Aim: FP-208 is a novel and effective small-molecule inhibitor blocking the mammalian target of rapamycin complex-1/mammalian target of rapamycin complex-2/PI3Ka. To investigate the pharmacokinetic profile of FP-208, a rapid and reliable analytical method was needed to be established to determine FP-208 in the plasma of patients with solid tumors. Materials & methods: FP208 was separated on a charged surface hybrid(CSH) C18 column (2.1mm×50mm, 1.7μm) after the plasma samples were purified using a protein precipitation method. Detection was performed on an AB Sciex 5500 mass spectrometer in the positive electrospray ionization mode. The established method was validated according to the bioanalytical guidelines. Conclusion: For the first time, the developed and validated method was successfully applied in the first-in-human study for FP-208 in patients with solid tumors after oral administration (Number: CTR20180683).

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