Hereditary gastrointestinal cancers: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up.

Knowledge of genetic susceptibility to gastrointestinal cancers is constantly evolving with identification of new genes. Similarly, a better understanding of the genotype/phenotype relationship in patients with Lynch syndrome (LS) or familial adenomatous polyposis (FAP) is leading to more individualised surveillance recommendations. In addition, molecular profiling of patients with cancer has been shown to guide targeted therapies, such as immunotherapy. Specialists involved in the care of patients with gastrointestinal cancer should be familiar with the main hereditary cancer syndromes and refer patients to specialised cancer genetic units for adequate genetic counselling and to address sp…