08/31/2026
Could one blood test eventually screen us for dozens of cancers?
The idea has attracted enormous interest, but Ash Alizadeh thinks the future may be more nuanced.
In the newest episode of The Future of Medicine, the Stanford hematologist-oncologist and physician-scientist discusses the promise and limitations of multi-cancer early detection tests, which look for molecular signals associated with cancer in the bloodstream.
Alizadeh argues that the field still has an important question to answer: Is a "Swiss Army knife" designed to detect many cancers the best approach, or could more targeted tests for people with particular risk factors ultimately work better?
The conversation also turns to an area where the evidence is becoming especially compelling: tracking cancer after treatment. By identifying the DNA mutations unique to someone's tumor, scientists can build highly personalized blood tests designed to find signs of residual or returning disease earlier than conventional methods may allow.
Alizadeh joins Department of Medicine's Euan Ashley to unpack what cancer blood tests can already do, what remains unproven, and how better molecular information could change the decisions doctors and patients make.
Watch the full episode: https://bit.ly/4xZXkWC
Listen at https://bit.ly/43LGRZv or wherever you get your podcasts.
Stanford Medicine