<scp> <i>GREB1</i> </scp> ‐rearranged uterine tumour shares a common <scp>DNA</scp> methylation signature with <scp> <i>ESR1</i> </scp> ‐rearranged <scp>UTROSCT</scp>

Overall, our findings confirm that GREB1-rearranged uterine tumours are part of the UTROSCT spectrum, though they frequently exhibit a more diffuse growth pattern and a higher degree of genomic instability.