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Related Experiment Videos

Estimating the starting dose for entry into humans: principles and practice.

Bruno G Reigner1, Karen Smith Blesch

  • 1Clinical Pharmacology Science, F. Hoffmann-La Roche Ltd, Basel, Switzerland. bruno.reigner@roche.com

European Journal of Clinical Pharmacology
|April 9, 2002
PubMed
Summary

Selecting the initial human dose is critical in drug development. The pharmacokinetically guided approach is now preferred over traditional methods for determining safe starting doses.

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Clinical pharmacokinetic/pharmacodynamic and physiologically based pharmacokinetic modeling in new drug development: the capecitabine experience.

Investigational new drugsยท2003
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Area of Science:

  • Clinical Pharmacology
  • Drug Development
  • Toxicology

Background:

  • Determining the initial dose for human studies is a crucial step in pharmaceutical research.
  • This process requires careful consideration of preclinical data and safety factors.

Purpose of the Study:

  • To review methods for calculating starting doses in clinical trials.
  • To present survey results on current practices in dose calculation.
  • To discuss key aspects of starting dose estimation.

Main Methods:

  • Review of established dose calculation approaches.
  • Survey of current practices within a pharmaceutical company.
  • Analysis of four distinct methods: dose by factor, similar drug, pharmacokinetic guided, and comparative approaches.

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Main Results:

  • Oncology often uses animal toxicity data multiplied by a safety factor.
  • Other therapeutic areas utilize dose by factor, similar drug, pharmacokinetic guided, and comparative methods.
  • The pharmacokinetically guided approach is the most frequently employed method, followed by dose by factor methods.

Conclusions:

  • Starting dose estimation is evolving from empirical to systematic, theory-based approaches.
  • Modern methods emphasize scientific rationale and data-driven decisions.