This document provides guidelines for the development, production, characterization, and specifications of monoclonal antibodies and related products intended for human use. It covers quality requirements for monoclonal antibodies to be used as medicinal products, including guidelines for development of the monoclonal antibody, production considerations regarding platform manufacturing and viral safety, characterization of physicochemical, immunological and biological properties, and specifications. The document replaces previous guidelines on monoclonal antibodies and sets quality standards for marketing authorization of these products in Europe.