The Certara Blog: PBPK Modeling & Simulation

Using Virtual Twin Technology to Predict Drug Exposure in Individual Patients

Using Virtual Twin™ Technology to Predict Drug Exposure in Individual Patients

Physiologically-based pharmacokinetics (PBPK) is a valuable resource to support decisions throughout drug development for sponsors and regulators. PBPK is used extensively to predict drug-drug interactions (DDIs), to inform dosing and clinical study design, to predict drug exposure, to predict variation in drug clearance, and to understand mechanisms of drug disposition. Virtual Twin technology, based on […]

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Using Virtual Twin Technology for Model-informed Precision Dosing

Using Virtual Twin™ Technology for Model-informed Precision Dosing

In a recent Expert Review of Clinical Pharmacology article, I assessed the status and future direction of precision dosing in clinical medicine.1 Model-informed precision dosing (MIPD) is a modeling and simulation (M&S) approach in healthcare that is used to predict the most effective and/or least toxic drug dose for a patient. MIPD could revolutionize healthcare […]

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Clinical Pharmacology Gap Analysis - Your FAQs

Clinical Pharmacology Gap Analysis: Your FAQs

As drug development has become more complex, with a higher risk of failure, greater uncertainty, and increased expense, the need for a quantitative and regulatory science-based strategy becomes clear. The first step in that performing that strategic assessment is a gap analysis and roadmap. Over the last couple of months, I’ve written a series of blog […]

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Clinical Pharmacology Gap Analysis - Lessons Learned

Clinical Pharmacology Gap Analysis: Lessons Learned

Clinical pharmacology gap analysis is a tool for outlining your drug program’s needs, prioritizing these needs, and providing a framework for how to satisfy them. This tool can create value for drug development programs. While gap analysis can be performed at any point in the drug development continuum, early engagement is best for maximizing its benefits. […]

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Beam Me Up, Scotty! Probing the Mechanisms of Transporter-mediated Drug Disposition

Beam Me Up, Scotty! Probing the Mechanisms of Transporter-mediated Drug Disposition

Over the last 15 years, the importance of drug transporters has become paramount for understanding drug absorption, distribution into tissues, and in particular, drug-drug interactions (DDIs). In vitro-in vivo extrapolation (IVIVE) is an approach to link in vitro systems to the human in vivo situation using algorithms and physiologically-based scaling factors. In this blog, I […]

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Validate Your Expertise in PK/PD NCA Analysis Through Certara Professional Certification

Validate Your Expertise in PK/PD NCA Analysis Through Certara Professional Certification

In the ongoing commitment to education and coinciding with the launch of Phoenix 8.1, Certara has introduced a new certification program available through Certara University. The new online accreditation program validates the scientists’ PK/PD data analysis skills using Certara software such as Phoenix WinNonlin and expands their professional reach. I caught up with Ana Henry, […]

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Using M&S to Evaluate Oncology Drug Dosing

Using M&S to Evaluate Oncology Drug Dosing

There are numerous challenges in developing oncology drugs: (1) they are often very toxic which precludes conducting clinical trials in healthy volunteers, (2) the PK of a drug may be altered in cancer patients due to demographic and physiological differences as compared to healthy volunteers, and (3) cancer patients face elevated drug-drug interaction (DDI) risk […]

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How to Maximize the Benefits of Clinical Pharmacology Gap Analysis

How to Maximize the Benefits of Clinical Pharmacology Gap Analysis

Many companies have tried and true clinical pharmacology practices. But when the rubber hits the road for your drug program, will these practices support regulatory success? Has your historic approach to drug development been updated to include the latest modeling and simulation innovations? It’s hard to change how you’ve historically done things. But, do you […]

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Skin in the Game - Mechanistic Modeling of Dermal Drug Absorption

Skin in the Game: Mechanistic Modeling of Dermal Drug Absorption

The ability to estimate systemic exposure from dermal absorption is essential in developing new dermatological medications or assessing the toxicological liability of commercially-used chemicals. Historically, animal models were used to evaluate dermal drug absorption prior to clinical testing. However, both differences in human and animal physiology as well as ethical concerns over animal testing have […]

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Using Virtual Cancer Patients to Probe the Mechanisms of Oncology Drug Disposition

Using Virtual Cancer Patients to Probe the Mechanisms of Oncology Drug Disposition

Oncology drug developers face a distinct set of challenges. Oncology drugs are often very toxic which precludes conducting clinical trials in healthy volunteers. In addition, cancer patients differ from healthy people in terms of their demographics and physiology. These changes mean that the pharmacokinetics of drugs may be altered in this population compared to healthy […]

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Using PBPK Models to Assess Fetal Drug Exposure

Using PBPK Models to Assess Fetal Drug Exposure

The tragedy of thalidomide provides a cautionary tale about the potential for birth defects resulting from fetal exposure to drugs. Thalidomide was used to treat morning sickness in pregnant women. By the time it was banned in 1962, more than 10,000 children had been born with thalidomide-induced birth defects. “Phocomelia,” wherein babies were born with […]

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The Biggest Drug Development News Stories in 2017

The Biggest Drug Development News Stories in 2017

When I reflect on the state of drug development in 2017, the opening lines of Charles Dickens’ A Tale of Two Cities comes to mind. It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, […]

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Using PBPK Models to Optimize Anti-HIV Drug Dosing in Pregnant Women

Using PBPK Models to Optimize Anti-HIV Drug Dosing in Pregnant Women

Antiretroviral drugs are a critical tool in preventing mother-to-child transmission of HIV. Yet, antiviral treatment options for pregnant women lag behind the “non-pregnant” population. In this blog post, I’ll discuss the reasons for this lag and how physiologically-based pharmacokinetic (PBPK) models can simulate PK during pregnancy and thus help optimize dosing for this special population. […]

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A Targeted Approach to Medicine and Dosing—A Necessity for Sustainable Healthcare

A Targeted Approach to Medicine and Dosing—A Necessity for Sustainable Healthcare

President Obama, during his 2015 State of the Union Address, launched the Precision Medicine Initiative “to enable a new era of medicine through research, technology, and policies that empower patients, researchers, and providers to work together toward development of individualized care.” The message given to the American people reinforced the critical need to implement precision medicine into […]

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Modeling & Simulation Take a Prominent Role in FDA’s Newly Published DDI Guidances

Modeling & Simulation Take a Prominent Role in FDA’s Newly Published DDI Guidances

On October 25, 2017, the FDA published two new guidance documents on drug-drug interactions (DDI). These guidance documents replace the February 2012 guidance, “Drug Interaction Studies—Study Design, Data Analysis, Implications for Dosing, and Labeling Recommendations.” According to the FDA, these new guidances reflect the agency’s current thinking and greater learnings on DDI and provides a […]

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A Chat with Biopharmaceutics Expert, Professor Jennifer Dressman

A Chat with Biopharmaceutics Expert, Professor Jennifer Dressman

Professor Jennifer Dressman is fearless—both in her science and her career. Born and raised in Australia, she holds degrees in pharmacy and a doctorate in pharmaceutics. Having held positions at Burroughs Wellcome and the University of Michigan, College of Pharmacy in the United States, she was offered her dream job as a professor at the […]

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FDA Reauthorization Act (FDARA) Affirms Commitment to Innovative MIDD Strategies

FDA Reauthorization Act (FDARA) Affirms Commitment to Innovative MIDD Strategies

Quietly, without any political rancor, the FDA Reauthorization Act of 2017 (FDARA) was passed by the US Congress and was signed into law by President Trump in late August. The FDARA reauthorizes the Prescription Drug User Act Fee Amendments (PDUFA) for the fifth time, the Medical Device User Act Fee Amendments (MDUFA) for the third […]

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New FDA Commissioner Endorses Use of M&S to Advance Drug Development

New FDA Commissioner Endorses Use of M&S to Advance Drug Development

With the swearing in of Dr. Scott Gottlieb as Commissioner of Food and Drugs in May, many have wondered as to the climate he will set for the US FDA. Certara’s mission and business thesis aligns with the FDA’s July 7 announcement regarding the steps it is taking to implement the 21st Century Cures Act. […]

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