The second training event took place in Rennes, France, from 13th to 16th October. Karin Tarte, Juliette Ferrant and the team prepared a a highly inspiring program and great network gatherings. Over four days, the Doctoral Candidates recveived training on open science and reproducibility in science. Then they attended a series of talks on the current state of research in cell therapies and the application of Car T cell treatments, gaining deep inside in translational and clinical research. The final two days focused on communication and dissemination in science, providing the opportunities for reflection on this topic and for designing concepts. The last session was dedicated to conducting an effective poster presentation, including feedbacks and discussion.