A Study to Evaluate Dostarlimab Plus Carboplatin-paclitaxel Versus Placebo Plus Carboplatin-paclitaxel in Participants With Recurrent or Primary Advanced Endometrial Cancer

Summary

This is a 2 part study. Part 1 is to evaluate the efficacy and safety of dostarlimab plus carboplatin-paclitaxel followed by dostarlimab versus placebo plus carboplatin-paclitaxel followed by placebo; and Part 2 is to evaluate the efficacy and safety of dostarlimab plus carboplatin-paclitaxel followed by dostarlimab plus niraparib versus placebo plus carboplatin-paclitaxel followed by placebo in participants with recurrent or primary advanced (Stage III or IV) endometrial cancer.

Timeline

Start

2019-07-18

Primary completion

2026-11-26

Completion

2026-11-26

Publications

• Background Mirza MR, Chase DM, Slomovitz BM, dePont Christensen R, Novak Z, Black D, Gilbert L, Sharma S, Valabrega G, Landrum LM, Hanker LC, Stuckey A, Boere I, Gold MA, Auranen A, Pothuri B, Cibula D, McCourt C, Raspagliesi F, Shahin MS, Gill SE, Monk BJ, Buscema J, Herzog TJ, Copeland LJ, Tian M, He Z, Stevens S, Zografos E, Coleman RL, Powell MA; RUBY Investigators. Dostarlimab for Primary Advanced or Recurrent Endometrial Cancer. N Engl J Med. 2023 Jun 8;388(23):2145-2158. doi: 10.1056/NEJMoa2216334. Epub 2023 Mar 27.
• Chen Y, Lubinga SJ, Ramsey S, Hurteau J, Reynolds J, Carlson JJ. Molecular Testing in Primary Advanced or Recurrent Endometrial Cancer: A Cost-Effectiveness Analysis. JCO Precis Oncol. 2026 Jul;10(7):e2501110. doi: 10.1200/PO-25-01110. Epub 2026 Jul 6.
• Chase DM, Herrstedt J, Miller EM, Gilbert L, Zub O, Mathews C, Angioli R, Teneriello M, Gropp-Meier M, Powell MA, Reyners AKL, Cloven NG, Eminowicz G, Gill SE, Mackowiak-Matejczyk B, Pothuri B, Samouelian V, Jain A, Boone J, Bouberhan S, Trinidad J, Braly P, Buttin B, Backes FJ, Sawyer B, Antony G, Garside J, Allonby O, McCourt CK, Mirza MR. Quality-adjusted time without symptoms of disease progression or toxicity of treatment in patients with primary advanced or recurrent endometrial cancer treated with dostarlimab plus carboplatin-paclitaxel versus carboplatin-paclitaxel. Int J Gynecol Cancer. 2025 Aug;35(8):101935. doi: 10.1016/j.ijgc.2025.101935. Epub 2025 May 21.
• Banerjee S, Ingles Russo Garces A, Garside J, Rahman T, Pearson C, Heffernan K. Real-world patient characteristics and survival outcomes in patients with advanced or recurrent endometrial cancer in England: a retrospective, population-based study. BMJ Open. 2024 Nov 24;14(11):e083540. doi: 10.1136/bmjopen-2023-083540.
• Auranen A, Powell MA, Sukhin V, Landrum LM, Ronzino G, Buscema J, Bauerschlag D, Lalisang R, Bender D, Gilbert L, Armstrong A, Safra T, Nevadunsky N, Sebastianelli A, Slomovitz B, Ring K, Coleman R, Podzielinski I, Stuckey A, Teneriello M, Gill S, Pothuri B, Willmott L, Sharma S, Dabrowski C, Antony G, Stevens S, Mirza MR, Fleming E. Safety of dostarlimab in combination with chemotherapy in patients with primary advanced or recurrent endometrial cancer in a phase III, randomized, placebo-controlled trial (ENGOT-EN6-NSGO/GOG-3031/RUBY). Ther Adv Med Oncol. 2024 Sep 28;16:17588359241277656. doi: 10.1177/17588359241277656. eCollection 2024.
• Valabrega G, Powell MA, Hietanen S, Miller EM, Novak Z, Holloway R, Denschlag D, Myers T, Thijs AM, Pennington KP, Gilbert L, Fleming E, Zub O, Landrum LM, Ataseven B, Gogoi R, Podzielinski I, Cloven N, Monk BJ, Sharma S, Herzog TJ, Stuckey A, Pothuri B, Secord AA, Chase D, Vincent V, Meyers O, Garside J, Mirza MR, Black D. Patient-reported outcomes in the subpopulation of patients with mismatch repair-deficient/microsatellite instability-high primary advanced or recurrent endometrial cancer treated with dostarlimab plus chemotherapy compared with chemotherapy alone in the ENGOT-EN6-NSGO/GOG3031/RUBY trial. Int J Gynecol Cancer. 2025 Jun;35(6):101852. doi: 10.1136/ijgc-2024-005484. Epub 2025 Apr 19.
• Mirza MR, Chase DM, Slomovitz BM, Christensen RD, Novak Z, Black D, Gilbert L, Sharma S, Valabrega G, Landrum LM, Hanker LC, Stuckey A, Boere I, Gold MA, Auranen A, Pothuri B, Cibula D, McCourt C, Raspagliesi F, Shahin MS, Gill SE, Monk BJ, Buscema J, Herzog TJ, Copeland LJ, Tian M, He Z, Stevens S, Zografos E, Coleman RL, Powell MA. A Plain Language Summary of "Dostarlimab for primary advanced or recurrent endometrial cancer". Future Oncol. 2025 Jan;21(2):151-168. doi: 10.2217/fon-2023-0940. Epub 2024 Jul 11.
• Bogani G, Monk BJ, Powell MA, Westin SN, Slomovitz B, Moore KN, Eskander RN, Raspagliesi F, Barretina-Ginesta MP, Colombo N, Mirza MR. Adding immunotherapy to first-line treatment of advanced and metastatic endometrial cancer. Ann Oncol. 2024 May;35(5):414-428. doi: 10.1016/j.annonc.2024.02.006. Epub 2024 Feb 29.
• You M, Zeng X, Zhang J, Huang Y, Zhang Y, Cai Z, Hu Y. Cost-effectiveness analysis of dostarlimab plus carboplatin-paclitaxel as first-line treatment for advanced endometrial cancer. Front Immunol. 2023 Sep 4;14:1267322. doi: 10.3389/fimmu.2023.1267322. eCollection 2023.
• Morton M, Marcu I, Levine M, Cosgrove C, Backes F, O'Malley D, Chambers L. Evaluation of Efficacy and Adverse Events After Second Immunotherapy Exposure in Endometrial and Cervical Carcinoma. Obstet Gynecol. 2023 Aug 1;142(2):360-363. doi: 10.1097/AOG.0000000000005243. Epub 2023 Jul 5.

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