General and statistical hierarchy of appropriate biologic endpoints.

Daniel Sargent

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


The introduction of newer classes of chemotherapeutic agents, with varying mechanisms of action by which they affect tumor growth and viability, has challenged the traditional norms of clinical trial design and drug approval in oncology. Most notably, the emergence of cytostatic biologic agents with antitumor efficacy has necessitated reassessment of appropriate primary endpoints for phase II and III trials in advanced disease from both a clinical and regulatory standpoint. Recent data in the field establishes an endpoint hierarchy, which places progression-free survival (PFS) between overall survival (OS) and response rate (RR) as appropriate primary endpoints for assessing the clinical efficacy of cytostatic and cytotoxic agents.

Original languageEnglish (US)
Pages (from-to)5-9
Number of pages5
JournalOncology (Williston Park, N.Y.)
Issue number6 Suppl 5
StatePublished - May 2006

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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