Antonio Perez-Martinez currently works at the Servicio de Hemato-Oncología Pediátrica, Hospital Universitario La Paz, Madrid, Spain and he is a Pediatric Associate Professor at the Faculty of Medicine, Universidad Autonoma de Madrid, Spain. He is a Medical Specialist in Pediatrics and the Head of Pediatric Hematology and Oncology Service at the University Hospital La Paz, Madrid, Spain. He is also the Head of the Pediatric Department at the Autonomous University of Madrid and the principal investigator at the Foundation for Biomedical Research, Hospital La Paz. He does research in Pediatric Cancer Research, Clinical Immunology, and Biology. Their current project is ‘Cell therapy based on the chimeric receptor NKG2D for treating childhood leukemia’ and NK cells combined with CXCR4 antibody as a strategy to control CXCR4+ sarcoma metastasis.