Lenvatinib and pembrolizumab versus platinum doublet chemotherapy as second-line therapy for advanced or recurrent endometrial cancer.

Objective: There is no consensus on whether platinum doublet chemotherapy or lenvatinib and pembrolizumab (LEN/PEM) is superior for advanced or recurrent endometrial cancer. Thus, this study aimed to compare the prognosis and adverse events in patients with advanced or recurrent endometrial cancer treated with platinum doublet chemotherapy or LEN/PEM.

Methods: We retrospectively reviewed the medical records of patients who received platinum doublet chemotherapy or LEN/PEM at our institution for advanced or recurrent endometrial cancer and had a history of platinum-based chemotherapy between January 2013 and August 2023.

Results: During the study period, 11 regimens were identified in the platinum doublet chemotherapy group, and 11 regimens were identified in the LEN/PEM group. The objective response rates of the platinum doublet chemotherapy and LEN/ PEM groups were 36.4% and 54.5% (P=0.67), respectively. The 6-month progression-free survival (PFS) rates of the platinum doublet chemotherapy and LEN/PEM groups were 27.3% (95% confidence interval [CI], 13.8%-40.7%) and 70.0% (95% CI, 55.5%-84.5%), respectively. The differences were significant between the two groups. Multivariate analyses of histology, prior lines of chemotherapy, platinum-free intervals, and regimens revealed that the LEN/PEM group had significantly better PFS rates.

Conclusion: Treatment with LEN/PEM resulted in significantly longer PFS than that of treatment with platinum doublet chemotherapy in patients with advanced and recurrent endometrial cancer. However, further large-scale studies are required to validate these findings.