Effective salvage therapies
Commenting further in their editorial, Dr. DiNardo and Dr. Pollyea wrote that, given that there are now multiple effective salvage therapies for the treatment of AML, an OS endpoint no longer solely reflects the effectiveness of an initial therapy, as survival will also be affected by subsequent lines of AML-directed treatment.
“Accordingly, OS should no longer be considered the sole determinant of the value of a new therapy,” the editorialists emphasized.
Furthermore, as the treatment of AML is increasingly based on biologically defined and differentially targeted subsets, “the required sample sizes and timelines to run a proper randomized, phase 3 study for an OS end point of a rare AML subset become logistically untenable,” they wrote.
That said, the editorialists felt the fact that FDA employees performed this meta-analysis at all was “highly laudable.” “It is, moreover, gratifying to know that the experiences of clinical trial participants can be maximized beyond the original contributions made to the studies in which they originally volunteered,” the editorialists observed.
“In the United States, this example should inspire investigators and industry partners to prioritize similar analyses with their [own] data sets,” they added.
Dr. Norsworthy, Dr. DiNardo, and Dr. Pollyea disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.