His research interests are clinical genitourinary oncology, sarcoma and early and translational clinical research in genetic polymorphisms as well as angiogenesis, as targets in cancer therapy. He also coordinates multicentre national clinical trials for new drugs in the treatment of prostate, kidney and bladder cancer.

In addition, Dr Carles is a member of the American Society of Clinical Oncology (ASCO), member of the European Society for Medical Oncology (ESMO) and member of the Spanish Association of Medical Oncology (SEOM). He acts as a consultant in an advisory capacity for the preparation and development for the Oncological Guidelines for the government of Catalunya (Oncoguies Catsalut).