Summary
This review examines emerging trends in the governance and policy landscape for real-world deployment of genetically engineered microbes (GEMs) in the United States and Europe. A recent wave of commercialized GEMs in the US suggests renewed interest in open release after decades of low activity, with applications spanning agriculture, environmental restoration, energy, and health.
These developments challenge existing governance frameworks in several ways. The feasibility of strict product- or process-based regulation is increasingly tested, while the long-term persistence and ecological action of GEMs complicate traditional risk assessment approaches. Synergistic and indirect impacts are difficult to predict, requiring methods that can address high levels of uncertainty.
At the same time, diverse applications and new business models—such as direct-to-consumer approaches—raise concerns around stewardship, consent, transborder movement, and monitoring. Addressing these issues will require interdisciplinary research and broader stakeholder deliberation to support more robust and adaptable governance.