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Drug-diagnostic co-development: challenges and issues.

Rumiko Shimazawa1, Masayuki Ikeda2

  • 1a Graduate School of Medicine , Osaka University , Osaka , Japan.

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Summary

Companion diagnostic tests optimize drug use, aiding both co-development with new therapies and follow-up development with existing ones. Systematizing examples will improve future drug-diagnostic development.

Keywords:
Companion diagnosticbridging studyclass effectco-developmentdrug development processdrug–diagnostic developmentfollow-up-developmentpredictive biomarkerretrospective validation

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Area of Science:

  • Pharmacology
  • Biomarker Development
  • Clinical Trial Design

Background:

  • Diagnostic tests are crucial for optimizing therapeutic agent utilization.
  • Companion diagnostics can be developed concurrently with new drugs (co-development) or for existing therapies (follow-up development).

Purpose of the Study:

  • To outline strategies for companion diagnostic test development.
  • To differentiate between co-development and follow-up development approaches.

Main Methods:

  • Co-development utilizes enrichment trial designs to confirm drug effectiveness in marker-defined populations.
  • Follow-up development validates biomarkers through prospective or retrospective analyses in unselected trials.

Main Results:

  • Prospective trials are the gold standard for biomarker validation.
  • Retrospective validation offers an efficient method for identifying effective treatments in marker-defined patient groups.

Conclusions:

  • Accumulating and systematizing examples of drug-diagnostic development is essential.
  • This knowledge base will facilitate the effective creation of future companion diagnostics.