Pharmacokinetic, Pharmacodynamic and Pharmacogenetic Study of Nab-Paclitaxel (Nanoparticle Albumin Bound-Paclitaxel) in Patients With Advanced Solid Tumors

OBJECTIVES:

Primary

• To develop a population pharmacokinetic model for paclitaxel administered as paclitaxel albumin-stabilized nanoparticle formulation (nab-paclitaxel) to a large population of patients with advanced or refractory cancer to characterize the inter-individual pharmacokinetic variability of this agent.

Secondary

• To explore nab-paclitaxel pharmacokinetic parameters in patients with metastatic prostate cancer (castrate), metastatic breast cancer, advanced non-small cell lung cancer and other incurable advanced or refractory tumors amenable to treatment with nab-paclitaxel.
• To explore the association between exposure to total and unbound paclitaxel after administration of nab-paclitaxel and neutropenia.
• To explore the association between the CYP2C8*3 variant and paclitaxel clearance.
• To explore the association between other variants of CYP2C8 and other genes involved in paclitaxel disposition including CYP3A4, CYP3A5, SLCO1B3 (OATP8), and ABCB1 (MDR1) and paclitaxel pharmacokinetic parameters and toxicity after one course of treatment.