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Ref Type Journal Article
PMID (25504632)
Authors Kendra KL, Plummer R, Salgia R, O'Brien ME, Paul EM, Suttle AB, Compton N, Xu CF, Ottesen LH, Villalona-Calero MA
Title A multicenter phase I study of pazopanib in combination with paclitaxel in first-line treatment of patients with advanced solid tumors.
Journal Molecular cancer therapeutics
Vol 14
Issue 2
Date 2015 Feb
Abstract Text This study was designed to evaluate the safety, pharmacokinetics, and clinical activity of pazopanib combined with paclitaxel to determine the recommended phase II dose in the first-line setting in patients with advanced solid tumors. Patients were enrolled in a 3+3 dose-escalation design to determine the maximum tolerated regimen (MTR) of once daily pazopanib plus paclitaxel administered every 3 weeks at four dose levels (DL1-4). Safety, pharmacokinetics, pharmacogenetics, and disease assessments were performed. Twenty-eight patients received treatment. One patient at DL1 had dose-limiting toxicity (DLT) of elevated hepatic enzymes. After pazopanib discontinuation, liver enzyme concentrations remained high until a concurrent medication, simvastatin, was discontinued. This patient had the defective CYP2C8*3*3 genotype. At DL2, 1 patient had DLT of elevated hepatic enzymes with rash and 1 patient had DLT of rash. The MTR was paclitaxel 150 mg/m(2) plus pazopanib 800 mg. The most common toxicities were alopecia, fatigue, hypertension, nausea, diarrhea, dysgeusia, neutropenia, myalgia, hair color changes, and peripheral neuropathy. Coadministration of pazopanib and paclitaxel resulted in a 38% increase in systemic exposure to paclitaxel, relative to administration of paclitaxel alone, at the MTR. Of the 28 patients treated with the combination, 10 achieved a partial response and 10 achieved stable disease of ≥12 weeks. Pazopanib 800 mg daily plus paclitaxel 150 mg/m(2) every 3 weeks was the recommended phase II dose, with a manageable safety profile, and with clinical activity in both melanoma and non-small cell lung cancer that suggest further evaluation of this combination is warranted.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown Advanced Solid Tumor not applicable Paclitaxel + Pazopanib Phase I Actionable In a Phase I trial, the combination of Votrient (pazopanib) and Taxol (paclitaxel) demonstrated safety and resulted in partial response in 36% (10/28) and stable disease in 36% (10/28) of patients with advanced solid tumors (PMID: 25504632). 25504632