Juan Manuel O'Connor is currently the Head of the Department of Gastrointestinal Tumors at Instituto Alexander Fleming, a position he has held since 2015. Member of HPB (Hepato-pancreatic-biliary) working group, Sanatorio de los arcos, He was assistant professor of Clinical Pharmacology at the School of Medicine of the Instituto Universitario CEMIC, Buenos Aires. Master Oncology Molecular) CNIO, Centro Nacional Investigaciones Oncologicas, Madrid España.