Lenvatinib Plus Pembrolizumab in Patients With Advanced Endometrial Cancer

J Clin Oncol. 2020 Sep 10;38(26):2981-2992. doi: 10.1200/JCO.19.02627. Epub 2020 Mar 13.


Purpose: Patients with advanced endometrial carcinoma have limited treatment options. We report final primary efficacy analysis results for a patient cohort with advanced endometrial carcinoma receiving lenvatinib plus pembrolizumab in an ongoing phase Ib/II study of selected solid tumors.

Methods: Patients took lenvatinib 20 mg once daily orally plus pembrolizumab 200 mg intravenously once every 3 weeks, in 3-week cycles. The primary end point was objective response rate (ORR) at 24 weeks (ORRWk24); secondary efficacy end points included duration of response (DOR), progression-free survival (PFS), and overall survival (OS). Tumor assessments were evaluated by investigators per immune-related RECIST.

Results: At data cutoff, 108 patients with previously treated endometrial carcinoma were enrolled, with a median follow-up of 18.7 months. The ORRWk24 was 38.0% (95% CI, 28.8% to 47.8%). Among subgroups, the ORRWk24 (95% CI) was 63.6% (30.8% to 89.1%) in patients with microsatellite instability (MSI)-high tumors (n = 11) and 36.2% (26.5% to 46.7%) in patients with microsatellite-stable tumors (n = 94). For previously treated patients, regardless of tumor MSI status, the median DOR was 21.2 months (95% CI, 7.6 months to not estimable), median PFS was 7.4 months (95% CI, 5.3 to 8.7 months), and median OS was 16.7 months (15.0 months to not estimable). Grade 3 or 4 treatment-related adverse events occurred in 83/124 (66.9%) patients.

Conclusion: Lenvatinib plus pembrolizumab showed promising antitumor activity in patients with advanced endometrial carcinoma who have experienced disease progression after prior systemic therapy, regardless of tumor MSI status. The combination therapy had a manageable toxicity profile.

Trial registration: ClinicalTrials.gov NCT02501096.

Publication types

  • Clinical Trial, Phase II
  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Antibodies, Monoclonal, Humanized / adverse effects
  • Antibodies, Monoclonal, Humanized / therapeutic use*
  • Antineoplastic Combined Chemotherapy Protocols / adverse effects
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • Disease Progression
  • Endometrial Neoplasms / drug therapy*
  • Endometrial Neoplasms / genetics
  • Endometrial Neoplasms / mortality
  • Endometrial Neoplasms / pathology
  • Female
  • Humans
  • Microsatellite Instability
  • Middle Aged
  • Phenylurea Compounds / adverse effects
  • Phenylurea Compounds / therapeutic use*
  • Progression-Free Survival
  • Quinolines / adverse effects
  • Quinolines / therapeutic use*
  • Time Factors


  • Antibodies, Monoclonal, Humanized
  • Phenylurea Compounds
  • Quinolines
  • pembrolizumab
  • lenvatinib

Associated data

  • ClinicalTrials.gov/NCT02501096