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The Guardian - UK
The Guardian - UK
Politics
Andrew Gregory in Chicago

Key takeaways from world’s largest cancer conference in Chicago

A doctor examines a mammogram
A doctor with a mammogram. A trial showed a new drug can stop some breast tumours before they grow. Photograph: Oksana Krasiuk/Alamy

Doctors, scientists and researchers shared new findings on ways to tackle cancer at the 2025 American Society of Clinical Oncology annual meeting, the world’s largest cancer conference.

The event in Chicago, attended by about 44,000 health professionals, featured more than 200 sessions on this year’s theme, Driving Knowledge to Action: Building a Better Future. Here is a roundup of the key studies.

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