General practitioner specialized in Homeopathy, practicing in Troyes, France for 30 years, and teacher at the CEDH, the Center for Education and Development of clinical Homeopathy, Jean-Claude Karp has been involved very early in oncology supportive care. To go further, he passed a University Degree in clinical oncology at Gustave Roussy Institute. He is also co-founder and vice-president of SHISSO, the International Homeopathic Society for Supportive Care in Oncology and co-author with François Roux, Pharmacist, of a book in this field. Since 2012 he hold a homeopathic consultation in oncology supportive care, in the Oncology-Radiotherapy department of the Hospital of Troyes, once a week, upon request from oncologists.