• Long-term follow-up of the NRG258 phase III trial reveals no significant difference in overall survival between adjuvant chemoradiation and chemotherapy alone for locally advanced endometrial carcinoma.
• The study, involving 736 patients, showed that chemoradiation did not improve recurrence-free survival compared to chemotherapy alone, despite reducing local recurrence rates.
• Subgroup analyses found no significant benefit of chemoradiation based on FIGO stage, age, race, histology, or other clinical factors, indicating limited applicability.
• The findings suggest that chemotherapy alone remains a standard treatment option for stage III/IVA endometrial cancer, challenging the role of adjuvant chemoradiation in this setting.