Scientists have developed a method to create functional human eggs from skin cells, which could potentially offer a new approach to infertility treatment. This proof-of-concept study was published in Nature Communications and involved transplanting the nucleus of a skin cell into a donor egg that had its own nucleus removed. The resulting eggs share DNA with the person who donated the skin cell and can be fertilised with another individual’s sperm. Although the technique is not yet ready for clinical use, it is considered a significant step in fertility research. However, all embryos resulting from this study were chromosomally abnormal, indicating that further research is needed to ensure safety and efficiency.