Axitinib in Metastatic Renal Cell Carcinoma: Results of a Pharmacokinetic and Pharmacodynamic Analysis

Axitinib is a potent and selective inhibitor of vascular endothelial growth factor receptors 1, 2, and 3, approved for second-line therapy for advanced renal cell carcinoma (RCC). Axitinib population pharmacokinetic and pharmacokinetic/pharmacodynamic relationships were evaluated. Using nonlinear mixed effects modeling with pooled data from 383 healthy volunteers, 181 patients with metastatic RCC, and 26 patients … Continued

What is a Loading Dose?

Drug therapy in chronic disease situations requires systemic drug levels to reach target steady-state levels for maximum safety and efficacy. The time it takes for a drug to reach steady-state is a function of the elimination half-life of the drug. The following table illustrates how long it will take to achieve steady-state relative to the … Continued

Certara Signs Partnership Agreement with ChemAxon

Certara’s D360 to offer access to ChemAxon’s MarvinSketch and JChem Cartridge for Oracle. ST. LOUIS, MO – March 19, 2013 – Certara™, a leading provider of software and scientific consulting services to improve productivity and decision-making from drug discovery through clinical development, announced that Certara and ChemAxon have signed a partnership agreement. The partnership will focus on … Continued

The Superposition Principle

The superposition principle has nothing to do with a super-hero; however, you might be perceived as a hero if you can explain the principle to others. The superposition principle is a mathematical concept that helps us analyze concentration-time data. While it may seem complicated, it is actually nothing more than addition! The superposition principle states … Continued

A Poor Metabolizer of Both CYP2C19 and CYP2D6 Identified by Mechanistic Pharmacokinetic Simulation in a Fatal Drug Poisoning Case Involving Venlafaxine

We present a fatal drug poisoning case involving venlafaxine (VEN). The deceased took his medication regularly (including 150 mg VEN twice daily), and nothing in the case or autopsy findings pointed towards suicide. The toxicological assessment concluded that the cause of death was most likely due to a poisoning with a combination of VEN, oxycodone … Continued