Base editing maps gene function in early human embryos

September 9, 2026 at 05:00 AM1 min

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Two research teams used adenine base editing in human embryos to reveal how the gene OCT4 contributes to early development. The work sharpens the view of this developmental stage while reactivating debates about heritable DNA editing.

Key Facts

Bower et al. and Jerabek et al. used adenine base editing in human embryos to study the gene OCT4.
The studies were published in Nature on 9 September 2026.
The authors are from KU Leuven, Belgium, including Sherif Khodeer and Vincent Pasque.
Vincent Pasque is an inventor on a patent application filed by KU Leuven for protocols to induce extra-embryonic mesoderm cells.

Base Editing in Embryos

Bower et al. and Jerabek et al. describe using adenine base editing in human embryos to investigate gene function. The approach enables precise DNA changes without double-strand breaks. The studies focus on OCT4, a key gene in early development.

Ethical Implications

The work reactivates debates about heritable DNA editing. The authors note that the research sharpens the view of early human development.