Attending #ESMO2026? View results from monarchE investigating the association of p27 V109G SNP zygosity with outcomes & abemaciclib treatment effect in HR+, HER2− high-risk early breast cancer. 4498P | Oct. 23, 3:15-4:00 PM | Hall 5 Program details: https://t.co/skmJllKI4d #EBC