The Roundtable: Our Thoughts About Model Based Drug Development

Best Practices for Writing Clinical Study Protocols

Kelley Kendle

The pharmaceutical industry has long grappled with the problem of poorly written clinical study protocols. The study protocol describes the conduct of a study, its objectives, methodology, design, and statistical considerations and ensures the safety of participants and integrity of data collected. The teams generally responsible for protocol writing are the medical writing and regulatory […]

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Topics: Clinical Transparency & Disclosure, Regulatory & Medical Writing

Feedback from the Phoenix Community: Our Visits with the FDA

Nathan Teuscher

We recently completed a week-long set of meetings with the FDA, where we met with over 300 FDA reviewers from 7 of the 11 FDA centers that use Phoenix. Here are a few topics that took center-stage during our visits: Q: How can we create Phoenix workflow templates that are reusable across different studies with […]

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Topics: PK/PD Modeling & Simulation

Modeling PK/PD Systems with Distributed Delays

Suzanne Minton

Many biological systems exhibit time delays. For instance, there is a delay between the time that a virus infects a cell and the onset of viral production. Mathematical models that incorporate these temporal delays are often used to characterize the pharmacokinetics/pharmacodynamics (PK/PD) of drugs. In this blog post, I’ll discuss some examples of biological systems […]

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Topics: PK/PD Modeling & Simulation

Avoiding Pitfalls in Plain Language Summaries of Clinical Trial Results

Behtash Bahador

Building trust with clinical trial participants is critical to the success of drug development programs. One of the best ways to earn that trust is by meeting their expectations regarding learning study results. In fact, a 2015 study by the Center for Information and Study of Clinical Research Participation (CISCRP) showed that 73% of clinical […]

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Topics: Clinical Transparency & Disclosure, Regulatory & Medical Writing

Expanding the Use of Pharmacometrics in Japan with Yusuke Tanigawara

Suzanne Minton

Science is a global endeavor. Indeed, one of the most exciting things about drug development is working with scientists doing important research all over the globe. The use of modeling and simulation (M&S) to support drug development has been embraced by pharmaceutical researchers in some parts of the world and is still gaining traction in […]

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Topics: PK/PD Modeling & Simulation

Mechanistic Modeling of Genome Scale Molecular Interaction Networks

Andrzej Kierzek

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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Topics: PBPK Modeling & Simulation, Systems Pharmacology

Nurturing the Pharmacometricians of the Future

Suzanne Minton

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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Topics: PBPK Modeling & Simulation, PK/PD Modeling & Simulation

Mind the Gap: Best Practices in Clinical Pharmacology Gap Analysis

Julie Bullock

Do you get anxious about taking tests? Many people do because they want to show their best efforts. Submitting your New Drug Application (NDA) to the FDA can be thought of as the ultimate test of a drug program. Are you confident that you’ll have robust answers to the 40 different questions that the agency […]

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Topics: Clinical Pharmacology Strategy

PBPK Modeling of Supersaturating Drug Product Behavior

David Turner

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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Topics: PBPK Modeling & Simulation

Using Pharmacokinetics to Assure Chemical Food Safety

Ronette Gehring

As a veterinarian, I’m responsible for the health and welfare of my animal patients. Sometimes, drugs are used to treat animals that are being raised for food (e.g., meat and milk). Therefore, tissue residues are a unique concern in veterinary medicine because indirect exposure to drugs and their metabolites through eating meat or milk could […]

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Topics: PK/PD Modeling & Simulation

Navigating the Path for Pharmacokinetic CDISC Data Preparation

Maria Saluta

Data heterogeneity is a regulatory reviewer’s nightmare. Some sponsors talk about patient “gender” whereas others list the patient’s “sex.” What about date formats? Do you use the American-style month-day-year format or the European-style day-month-year? Inconsistent data presentation makes both collaborating on drug development projects and reviewing regulatory submissions more difficult. To address this challenge, the […]

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Topics: PK/PD Modeling & Simulation

Predicting Drug Exposure During Pregnancy Using PBPK Models

Suzanne Minton

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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Topics: PBPK Modeling & Simulation

How AI Tech Is Changing Regulatory Writing

Nirpal Virdee

Did you know that you’re likely using artificial intelligence (AI) in your everyday life? For example, the digital music service, Spotify, creates “mood-based” playlists that are curated to users’ musical preferences. Spotify generates these customized play lists using a machine learning algorithm that has learned your unique musical preferences based on your previous interactions with […]

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Topics: Clinical Transparency & Disclosure, Regulatory & Medical Writing

New Tools Support Developing Better TB Drugs

I. Gardner & O. Hatley

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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Topics: PBPK Modeling & Simulation

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

Ellen Leinfuss

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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Topics: PBPK Modeling & Simulation

EMA Policy 0070 Compliance Tips from James Bond

Lora Killian

In many ways, the strategic planning required to comply with EMA Policy 0070―a requirement to publish anonymized versions of clinical study reports (CSRs) and other submission documents―is similar to a secret agent’s mission: sponsors must keep the identities of people named or referred to in those documents top-secret while maintaining the document’s clinical utility. In […]

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Topics: Clinical Transparency & Disclosure

Modeling Delayed Outcomes in PK/PD Studies Using DDEs

Shuhua Hu

Delays are ubiquitous in pharmacokinetics (PK) and pharmacodynamics (PD) studies. Transit compartment models, described by systems of ordinary differential equations, have been widely used to describe delayed outcomes in PK and PD studies. The obvious disadvantage for this type of model is it requires manually finding proper values for the number of compartments. In addition, […]

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Topics: PK/PD Modeling & Simulation

The Model-informed Precision Dosing Revolution Is Coming

Suzanne Minton

Modeling and simulation (M&S) has been widely accepted and adopted by biopharmaceutical companies and global regulatory agencies. However, its implementation in clinical care has been modest to date. Model-based approaches are essential to realize the goal of precision dosing—providing the right drug dose to maximize therapeutic benefit, while reducing risk for each individual patient. The […]

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Topics: PBPK Modeling & Simulation, PK/PD Modeling & Simulation

Leveraging PBPK Modeling and Simulation for Neonatal and Infant Drug Development

Alice Ke

Despite increased regulatory support for pediatric drug development, sponsors still face ethical, economic and practical constraints. Indeed, while children represent about 40% of the world’s population, only 10% of the drugs on the market have been approved for pediatrics. Children are not small adults, and all children are not the same. In particular, children under […]

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Topics: PBPK Modeling & Simulation

Accessing Grid Computing from Your Desktop for NLME

Fred Soltanshahi

One of the most challenging aspects of population pharmacokinetic/pharmacodynamic (PK/PD) modeling is the lack of computing power required to solve complex models in a reasonable time frame to support rapid drug development decisions. The explosion of cloud computing resources has provided access to significant computing power to solve these complex models. However, accessing these cloud […]

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Topics: PK/PD Modeling & Simulation
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