The Certara Blog: PBPK Modeling & Simulation

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

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

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

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

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

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

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

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

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

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

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

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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Mechanistic Modeling of Genome Scale Molecular Interaction Networks

Upon the completion of the Human Genome Project, the lead investigator, Dr. Francis Collins remarked: Science is a voyage of exploration into the unknown. We are here today to celebrate a milestone along a truly unprecedented voyage, this one into ourselves. Alexander Pope wrote, “Know then thyself. Presume not God to scan. The proper study […]

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Nurturing the Pharmacometricians of the Future

As a scientist, you always remember your first conference. The ability to share your research and learn from your peers is an invaluable part of any scientist’s training. That’s why I’m so proud that Certara helps support the travel and accommodation expenses for a selected number of students wishing to attend the Population Approach Group […]

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PBPK Modeling of Supersaturating Drug Product Behavior

The problem of supersaturating drug products might loosely be summed up as: “If you’re not part of the solution, you’re part of the precipitate!” Indeed, more than 60% of new drug candidates are poorly soluble1 which can severely limit their bioavailability. To ameliorate this issue, a common approach is formulating to create supersaturated solutions of […]

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Predicting Drug Exposure During Pregnancy Using PBPK Models

Moms want the best for their kids even before they’re born. When I was pregnant with my son and daughter, I watched my diet and tried to stay active. During both of my pregnancies, I had to take medications several times. And I was always concerned about whether the medications could impact my unborn children. […]

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New Tools Support Developing Better TB Drugs

Tuberculosis (TB)—caused by infection with the mycobacterium Mycobacterium tuberculosis—is one of the top 10 leading causes of death worldwide with a total of 1.8 million people dying from the disease in 2015. TB is also the leading cause of death in HIV-infected individuals. TB usually attacks the lungs but can infect any part of the […]

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The Ides of March—FDA’s Pharmaceutical and Clinical Pharmacology Advisory Committee Meeting

While ominously scheduled for March 15, no such drama (like the assassination of Julius Caesar, the origins of ‘beware the Ides of March’) occurred during the FDA’s Pharmaceutical Science and Clinical Pharmacology Advisory Committee meeting. It was quite productive, acknowledging the tremendous impact of modeling and simulation in drug development and regulatory review moving the technology further into the mainstream.

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