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Related Experiment Videos

Surrogate endpoints: a basis for a rational approach.

J P Boissel1, J P Collet, P Moleur

  • 1Unité de Pharmacologie Clinique, Hôpital Neurocardiologique, Lyons, France.

European Journal of Clinical Pharmacology
|January 1, 1992
PubMed
Summary

Choosing surrogate endpoints in clinical trials requires careful consideration beyond statistical correlation. A proposed approach offers guidelines for selecting reliable intermediate endpoints to ensure accurate treatment assessments.

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Area of Science:

  • Clinical Trials Methodology
  • Biostatistics
  • Pharmacometrics

Background:

  • Clinical trials frequently use intermediate endpoints, or surrogate endpoints, instead of definitive clinical endpoints.
  • This substitution is driven by practical and financial considerations.
  • Current guidelines for selecting surrogate endpoints are lacking.

Purpose of the Study:

  • To propose a theoretical framework and practical guidelines for selecting appropriate surrogate endpoints.
  • To establish criteria for verifying the validity of surrogate endpoints.

Main Methods:

  • Development of an approach based on three verifiable conditions.
  • Utilizing equations to assess surrogate endpoint validity, contingent on available disease pathophysiology and epidemiology data.

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Main Results:

  • A strong statistical correlation alone is insufficient for defining a valid surrogate endpoint.
  • The proposed method provides a basis for evaluating the suitability of surrogate endpoints.

Conclusions:

  • Results from studies using common surrogate endpoints should be interpreted with caution.
  • Clinical endpoints, where feasible, remain the preferred basis for treatment assessment over intermediate endpoints.