Pembrolizumab and Pemetrexed for Progressive Chordoma

Summary

Primary Objective: 1\. To determine objective response rate (ORR) according to RECIST v1.1 of pembrolizumab and high-dose pemetrexed in the treatment of patients with chordoma until disease progression. The OOR will be investigator assessed. Secondary Objectives: 1. To describe the adverse events associated with administering pembrolizumab and high-dose pemetrexed combination treatment. 2. To determine disease control rate based on imaging and overall survival. 3. To determine median PFS and PFS rates at 6, 9, 12, and 18 months. 4. To evaluate changes in volumetric tumor measurements based on imaging. 5. To determine the effects of combination treatment on quality of life, assessed by the EORTC-QLQ-C30 questionnaire. 6. To assess tumor evolution over time in patients with chordoma based on imaging, and molecular profiling. 7. To assess the pharmacodynamic effects of treatment in blood. Exploratory Objective: 1\. To explore the relationship between molecular phenotype and patient response.

Timeline

Start

2025-01

Primary completion

2026-11-30

Completion

2026-11-30

Publications

• Background Williams NL, Wuthrick EJ, Kim H, Palmer JD, Garg S, Eldredge-Hindy H, Daskalakis C, Feeney KJ, Mastrangelo MJ, Kim LJ, Sato T, Kendra KL, Olencki T, Liebner DA, Farrell CJ, Evans JJ, Judy KD, Andrews DW, Dicker AP, Werner-Wasik M, Shi W. Phase 1 Study of Ipilimumab Combined With Whole Brain Radiation Therapy or Radiosurgery for Melanoma Patients With Brain Metastases. Int J Radiat Oncol Biol Phys. 2017 Sep 1;99(1):22-30. doi: 10.1016/j.ijrobp.2017.05.028. Epub 2017 May 26.
• Background Adjei AA. Pemetrexed: a multitargeted antifolate agent with promising activity in solid tumors. Ann Oncol. 2000 Oct;11(10):1335-41. doi: 10.1023/a:1008379101017.
• Background McMaster ML, Goldstein AM, Bromley CM, Ishibe N, Parry DM. Chordoma: incidence and survival patterns in the United States, 1973-1995. Cancer Causes Control. 2001 Jan;12(1):1-11. doi: 10.1023/a:1008947301735.
• Background Eriksson B, Gunterberg B, Kindblom LG. Chordoma. A clinicopathologic and prognostic study of a Swedish national series. Acta Orthop Scand. 1981 Feb;52(1):49-58. doi: 10.3109/17453678108991758.

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Indications