Real World Outcomes of Pembrolizumab and Reduced-Dose Lenvatinib in Recurrent Endometrial Cancer by Platinum and p53 Status. (PubMed, Gynecol Oncol Rep)
What is already known on this topic:Pembrolizumab plus lenvatinib has been an emerging treatment for recurrent endometrial cancer, showing survival benefit in pMMR tumors. However, most data are from clinical trials with less heavily pretreated patients, and uncertainty remains about efficacy in platinum-resistant, p53-mutated, high-grade tumors and the optimal starting dose of lenvatinib given its toxicity.What this study adds:In a real-world cohort enriched for platinum-resistant, high-grade, p53-mutated, heavily pre-treated endometrial cancers, lenvatinib plus pembrolizumab achieved an objective response rate consistent with prior trials. A reduced starting dose of lenvatinib (≤10 mg) was non-inferior to higher doses, better tolerated, and associated with fewer dose reductions. Additionally, p53 mutation and good ECOG status predicted improved progression-free survival.How this study might affect research, practice or policy:These findings suggest that reduced-dose lenvatinib may maintain efficacy while improving tolerability in heavily pretreated high-grade tumors and platinum resistant, p53 mutated patients, supporting individualized dosing strategies. They also highlight p53 mutation as a potential predictive biomarker, warranting larger studies.