Marta Rodriguez-Moreno, Instituto de Investigación Sanitaria, Fundación Jiménez Díaz University Hospital, Madrid, Spain, talks on recent research in peripheral T-cell lymphoma (PTCL), highlighting efforts to personalize treatments for patients with PTCL through the identification of new biomarkers. This interview took place at the EORTC Cutaneous Lymphoma Group 20-21 meeting in Marseille.