[Associated metabolic and nutritional side effects to biological cancer therapy].

Introduction: The different types of cancer represent one of the main causes of morbimortality worldwide. Classical anti-tumor therapy (surgery, chemotherapy, radiotherapy) has notably increased the survival rate. Biological therapies, with selective and frequently specific mechanisms of action, are a relatively recent acquisition in oncologic therapy; among the most commonly used ones are: cytokines, monoclonal antibodies, tyrosine kinase inhibitors, and mTOR inhibitors.