A simple and inexpensive blood test could pick out patients with stomach or oesophageal cancer who are likely to benefit from targeted treatment, a new study shows.

A blood test that can identify a variety of mutations in advanced breast cancer can reliably match women to effective targeted treatments, early results of a major clinical trial reveal.

A new blood test can predict how well men with advanced prostate cancer will respond to treatment and could replace some of the existing methods used to characterise and track the disease.