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Clinical endpoints for efficacy studies.

Chad K Porter1, Ramiro L Gutierrez1, Karen L Kotloff2

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PubMed
Summary
This summary is machine-generated.

Developing standardized clinical endpoints is crucial for advancing vaccines against enteric pathogens like Shigella and ETEC. This review aims to establish common endpoints for better vaccine trial comparisons and development.

Keywords:
CHIMControlled human infection modelDiarrheal diseasesETECEfficacyEndpointsEnterotoxigenic E. coliShigellaTravelers' diarrheaVaccine

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Area of Science:

  • * Vaccinology and Clinical Trials
  • * Infectious Diseases and Epidemiology

Background:

  • * Standardized clinical endpoints are essential for vaccine development, licensure, and pre-qualification.
  • * The field of enteric pathogen vaccine development, including Shigella and enterotoxigenic E. coli (ETEC), requires consistent endpoints for comparative assessments.
  • * Current endpoint methodologies lack uniformity, hindering direct comparisons between vaccine candidates and studies.

Purpose of the Study:

  • * To review and establish consensus on clinical endpoints for future vaccine trials targeting enteric pathogens.
  • * To facilitate study-to-study comparisons and comparative assessments of vaccine candidates.
  • * To identify novel endpoints and consider disease spectrum for prevention targets.

Main Methods:

  • * A workshop convened experts to review clinical endpoints from various study designs: controlled human infection models (CHIM), field efficacy studies in adult travelers, and pediatric studies in low-middle income countries.
  • * Participants engaged in workgroups focused on specific study designs to discuss key endpoint topics.
  • * Existing endpoints were evaluated, and potential novel endpoints were considered in relation to disease parameters.

Main Results:

  • * Summarizes participant support for various clinical endpoints across different study designs.
  • * Identifies recommendations for additional endpoints to be considered in future vaccine efficacy trials.
  • * Provides a foundation for endpoint determination in upcoming vaccine development efforts.

Conclusions:

  • * Establishing consensus on clinical endpoints is vital for the efficient development and evaluation of vaccines against enteric pathogens.
  • * The recommendations from this workshop will guide the selection of endpoints in future Shigella, ETEC, and other enteric pathogen vaccine trials.
  • * Standardized endpoints will enhance the reliability and comparability of vaccine efficacy data.