- Article
Relationship between Progression-Free Survival and Overall Survival in Chronic Lymphocytic Leukemia: A Literature-Based Analysis
- C. Beauchemin,
- J.B. Johnston,
- M.È. Lapierre,
- F. Aissa and
- J. Lachaine
Background: The endpoints of progression-free survival (pfs) and time-to-progression (ttp) are frequently used to evaluate the clinical benefit of anticancer drugs. However, the surrogacy of those endpoints for overall survival (os) is not validated...