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Updated: Mar 14, 2026

A Melanoma Patient-Derived Xenograft Model
Published on: May 20, 2019
Pembrolizumab: Role of Modeling and Simulation in Bringing a Novel Immunotherapy to Patients With Melanoma
R de Greef1,2, J Elassaiss-Schaap1,3, M Chatterjee1
1Merck & Co., Inc, Kenilworth, New Jersey, USA.
Abstract:
Recently, immunotherapy has yielded promising results in several cancer types. Contrary to the established classical chemotherapy-dosing paradigm, a maximum tolerated dose approach does not always produce better clinical outcomes for novel targeted therapies, as their efficacy is frequently robust at pharmacologically active doses below the maximum tolerated dose. Integrated safety and efficacy assessments are needed to inform clinical dose and trial design, and to support an early identification of potentially safe and efficacious combination treatments.
Insights
Immunotherapy shows promise in cancer treatment. Novel therapies may be effective at lower doses than previously thought, requiring new approaches to drug dosing and combination trials.
Area of Science:
- Oncology
- Pharmacology
- Clinical Trial Design
Background:
- Immunotherapy has emerged as a significant advancement in cancer treatment.
- Classical chemotherapy dosing paradigms may not be optimal for novel targeted therapies.
Discussion:
- Maximum tolerated dose (MTD) is not always the most effective dose for novel targeted therapies.
- Efficacy of targeted therapies can be robust at doses below MTD.
Key Insights:
- Integrated safety and efficacy assessments are crucial for novel cancer therapies.
- Dose selection for targeted therapies requires a departure from traditional MTD approaches.
Outlook:
- New clinical trial designs are needed to optimize dosing for targeted therapies.
- Identifying safe and effective combination treatments early is essential for advancing cancer care.
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