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|Ref Type||Journal Article|
|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|
|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.|
|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|