Clinical trials are an essential step towards getting new treatments and detection tests into the clinic.
Liz Chipchase signed up for a clinical trial, unaware it would be a decision that would save her life.
She took part in the BEST3 trial, which studies the effectiveness of the Cytosponge.
The Cytosponge, or ‘Pill on a String’, collects cells from the food pipe, which is also called the oesophagus. The cells then undergo molecular testing in the lab. These tests look for signs of a condition called Barrett’s oesophagus, which in some cases can develop into cancer.