Hypoxia Driven Metabolic Response in Oesophagogastric Adenocarcinoma

Oesophagogastric Cancer and Hypoxia: Oesophagogastric cancer is a significant global burden, with 1.7 million new cases per year. It is well known that survival from oesophagogastric cancer is poor. Five-year survival for these cancers in the UK remains between 15-20%, which is amongst the lowest in Europe. The reason for this poor survival is multifactorial, with late diagnosis and treatment-resistant hypoxic tumours both significantly contributing to this high mortality. Tumour hypoxia occurs when rapidly growing malignancies outstrip oxygen (and nutrient) supply. These hypoxic conditions trigger adaptive metabolic and genomic mutations within the cancer. Clinically, these mutations lead to cancers which are highly aggressive and treatment resistant. Therefore, patients with oesophagogastric cancers displaying high degrees of hypoxia have a considerably poorer prognosis. Reassuringly, there are emerging treatment options available. The adaptive pathways triggered by hypoxia offer unique opportunities for personalized and targeted oncological therapies to improve clinical outcomes in this patient cohort. However, for these therapies to be effective, it is vital patients with hypoxic tumours can be identified. There are currently no established methods for identifying hypoxic tumours in oesophagogastric cancer patients. Whilst biomarker candidates have been identified, these require invasive biopsies and are limited in terms of repeatability, and therefore clinical applica…

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Henry Douglas Robb, MBChB BSc (Hons) MSc MRCS  ·  +44 (0) 207 594 8847  ·  henry.robb19@imperial.ac.uk

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