Study Evaluating the Efficacy of the myDIET Software Tool in the Nutritional Management of Patients With Localized and Resectable Gastric or Esogastric Junction Cancer.

Other illness

• Other associated solid cancer or haemopathy;
• History of gastric, duodenal or esophageal surgery;
• Inability to comply with study requirements, including :
  • Impossibility for the patient or his/her caregiver to connect to myDIET;
  • Difficulty in understanding the written French language;
  • Psychological incapacity (e.g. excessive vulnerability, psychiatric disorder) or physical incapacity (e.g. physical/motor disability);

Other

• Presence of severe comorbidity (Charlson index \> 9)
• Presence of unbalanced dysthyroidism;
• Patient under guardianship, curatorship or safeguard of justice;
• Patients already participating in a clinical trial or interventional study likely to interfere with the evaluation of the primary endpoint.
• Pregnant or breast-feeding patient.

• Patient 18 years of age or older at date of signing informed consent to participate;
• Histologically proven diagnosis of gastric adenocarcinoma or OGJ;
• Localized, resectable disease;
• Patients with an indication for perioperative chemotherapy and/or immunotherapy validated in multidisciplinary consultation meeting, with a scheduled surgery date at least 1 month after enrolment;
• Performance status (ECOG): 0-2;
• Membership of a social security scheme;
• Signed informed consent to participate.