A quantitative analysis of therapeutic cancer vaccines in phase 2 or phase 3 trial

Amabel Cl Tan1, Anne Goubier2, Holbrook E Kohrt3

  • 1Peter Doherty Institute for Infection and Immunity, Department of Microbiology and Immunology, The University of Melbourne, Melbourne, Australia ; PX Biosolutions, Melbourne, Victoria 3205 Australia.

Insights

Provenge® (Sipuleucel-T) is the sole FDA-approved cancer vaccine. Analysis of therapeutic cancer vaccine trials reveals stable Phase 3 registrations from 2010-2014, indicating continued investment in immunotherapies despite low approval rates.

Area of Science:

  • Oncology
  • Immunotherapy
  • Vaccinology

Background:

  • Provenge® (Sipuleucel-T) is the only FDA-approved therapeutic cancer vaccine.
  • Significant advancements in other cancer therapies contrast with limited vaccine approvals.

Purpose of the Study:

  • To quantitatively analyze Phase 2 and Phase 3 therapeutic cancer vaccine trials.
  • To identify trends in vaccine platforms, adjuvant use, target indications, and treatment combinations.
  • To examine the relationship between trends and the Phase 3: Phase 2 trial ratio.

Main Methods:

  • Quantitative analysis of published Phase 2 and Phase 3 therapeutic cancer vaccine trial data.
  • Trend analysis focusing on vaccine platforms, adjuvants, indications, and combination therapies.
  • Comparative analysis of trial phase ratios across different vaccine platforms.

Main Results:

  • Identified shifts in vaccine platforms, adjuvant usage, and target indications over time.
  • Observed trends in antibody and treatment combinations in recent versus past trials.
  • Phase 3 trial registrations remained stable between 2010 and 2014, despite a low overall success rate for vaccine approvals.

Conclusions:

  • Continued investment in therapeutic cancer vaccine development is evident from stable Phase 3 trial registrations.
  • Understanding historical trends is crucial for future development of immunotherapeutic vaccines.
  • Further research into successful vaccine platforms and combination strategies is warranted.

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