New techniques in molecular biology that enable targeted interventions in the genome are opening up promising new possibilities for research and application. The ethical and legal ramifications of these methods, known as “genome editing” and “genome surgery,” need to be discussed throughout society, particularly with regard to research on human cells. The German Embryo Protection Act prohibits research on human embryos in Germany. However, the act, last amended in 2011, does not cover all issues raised by these new methods in genome surgery. To foster discussion on these issues in Germany, an interdisciplinary group of experts from the German National Academy of Sciences Leopoldina has written a Discussion Paper titled “Ethical and legal assessment of genome editing in research on human cells,” which is published today.