ESTIV Congress 2026 > Programme > Replacing Animals in Therapeutic Monoclonal Antibody Approvals

Replacing Animals in Therapeutic Monoclonal Antibody Approvals

Chairs: Jeffrey Brown & Andreas Stucki

The US Food and Drug Administration (FDA) announced its plans to eliminate the use of animals to meet regulatory testing requirements for monoclonal antibody drugs within a 3 to 5 year time frame. To accelerate this process, in the US and elsewhere, we present a number of strategies that have proven to be useful in regulatory engagements seeking to achieve this goal for drugs in this class prior to the publication of the FDA’s roadmap to achieve this goal. This includes detailed discussion of the feedback received in support of a nonanimal preclinical testing approach for a therapeutic human monoclonal diphtheria antitoxin from the FDA (via pre-IND), the European Medicines Agency (via Scientific Advice and Innovation Task Force meetings), and the Paul-Ehrlich-Institut (via Scientific Advice meeting). Other case studies will be presented for related drugs in this and other drug classes that have reached various stages of regulatory approval. These case studies can serve as templates for parties interested in pursuing regulatory submissions using innovative animal replacement strategies.

Speakers

  1. Leander Grode – The Current Landscape of Non-Animal Preclinical Assessment for Biopharmaceuticals
  2. Jeffrey Brown – Approaching the development and regulatory review of therapeutic monoclonal antibodies without using animal studies
  3. Esther Wenzel – Beyond the saddle: Fully human antibodies against diphtheria toxin from animal-free discovery platforms