BIRC5 and digestive system neoplasm: Survivin mRNA was detected by RT‐PCR in peripheral blood of patients with a variety of gastrointestinal tumours including oesophageal adenocarcinoma.39 A recent study using the CellSearch platform assessed CTC numbers in patients with advanced oesophagogastric adenocarcinoma undergoing palliative chemotherapy.40 The study was ended prematurely due to the loss of commercial funding.