Leflunomide in Combination With Decitabine for Treatment of Relapsed or Refractory Myelodysplastic Syndromes

Summary

The goal of this interventional clinical trial is to evaluate the safety and tolerability of leflunomide in combination with decitabine as treatment for patients with relapsed or refractory myelodysplastic syndromes (R/R MDS). The main question this study aims to answer are to evaluate and estimate the maximum tolerated doses and/or biologically active doses of the combination of leflunomide-decitabine in participants. Decitabine will be administered at a dose of 20 mg/m2 by continuous intravenous infusion over one hour repeated daily for 5 days with repeating cycle every 4 weeks. Leflunomide is administered orally at 10 to 20 mg once daily (without a loading dose) for 14 to 21 days, as part of a 28-day treatment cycle in adult subjects with R/R MDS. After 12 cycles (study duration) responding patients can continue progression with the assigned doses.

Timeline

Start

2025-07-15

Primary completion

2027-10

Completion

2028-10

Publications

• Background Chilakala S, Feng Y, Li L, Mahfouz R, Quteba E, Saunthararajah Y, Xu Y. Tracking Decitabine Incorporation into Malignant Myeloid Cell DNA in vitro and in vivo by LC-MS/MS with Enzymatic Digestion. Sci Rep. 2019 Mar 14;9(1):4558. doi: 10.1038/s41598-019-41070-y.
• Background Qin F, Wu J, Chen F, Wei Y, Zhao Y, Jiang Z, Bai J, Yu H. Optimal, minimax and admissible two-stage design for phase II oncology clinical trials. BMC Med Res Methodol. 2020 May 20;20(1):126. doi: 10.1186/s12874-020-01017-8.
• Background Zeidan AM, Platzbecker U, Bewersdorf JP, Stahl M, Ades L, Borate U, Bowen D, Buckstein R, Brunner A, Carraway HE, Daver N, Diez-Campelo M, de Witte T, DeZern AE, Efficace F, Garcia-Manero G, Garcia JS, Germing U, Giagounidis A, Griffiths EA, Hasserjian RP, Hellstrom-Lindberg E, Iastrebner M, Komrokji R, Kulasekararaj AG, Malcovati L, Miyazaki Y, Odenike O, Santini V, Sanz G, Scheinberg P, Stauder R, van de Loosdrecht AA, Wei AH, Sekeres MA, Fenaux P. Consensus proposal for revised International Working Group 2023 response criteria for higher-risk myelodysplastic syndromes. Blood. 2023 Apr 27;141(17):2047-2061. doi: 10.1182/blood.2022018604.
• Background Kayamori K, Nagai Y, Zhong C, Kaito S, Shinoda D, Koide S, Kuribayashi W, Oshima M, Nakajima-Takagi Y, Yamashita M, Mimura N, Becker HJ, Izawa K, Yamazaki S, Iwano S, Miyawaki A, Ito R, Tohyama K, Lennox W, Sheedy J, Weetall M, Sakaida E, Yokote K, Iwama A. DHODH inhibition synergizes with DNA-demethylating agents in the treatment of myelodysplastic syndromes. Blood Adv. 2021 Jan 26;5(2):438-450. doi: 10.1182/bloodadvances.2020001461.
• Background Santini V. How I treat MDS after hypomethylating agent failure. Blood. 2019 Feb 7;133(6):521-529. doi: 10.1182/blood-2018-03-785915. Epub 2018 Dec 13.
• Background Stomper J, Rotondo JC, Greve G, Lubbert M. Hypomethylating agents (HMA) for the treatment of acute myeloid leukemia and myelodysplastic syndromes: mechanisms of resistance and novel HMA-based therapies. Leukemia. 2021 Jul;35(7):1873-1889. doi: 10.1038/s41375-021-01218-0. Epub 2021 May 6.
• Background Jabbour E, Garcia-Manero G, Batty N, Shan J, O'Brien S, Cortes J, Ravandi F, Issa JP, Kantarjian H. Outcome of patients with myelodysplastic syndrome after failure of decitabine therapy. Cancer. 2010 Aug 15;116(16):3830-4. doi: 10.1002/cncr.25247.
• Background Fenaux P, Mufti GJ, Hellstrom-Lindberg E, Santini V, Finelli C, Giagounidis A, Schoch R, Gattermann N, Sanz G, List A, Gore SD, Seymour JF, Bennett JM, Byrd J, Backstrom J, Zimmerman L, McKenzie D, Beach C, Silverman LR; International Vidaza High-Risk MDS Survival Study Group. Efficacy of azacitidine compared with that of conventional care regimens in the treatment of higher-risk myelodysplastic syndromes: a randomised, open-label, phase III study. Lancet Oncol. 2009 Mar;10(3):223-32. doi: 10.1016/S1470-2045(09)70003-8. Epub 2009 Feb 21.
• Background Prebet T, Gore SD, Esterni B, Gardin C, Itzykson R, Thepot S, Dreyfus F, Rauzy OB, Recher C, Ades L, Quesnel B, Beach CL, Fenaux P, Vey N. Outcome of high-risk myelodysplastic syndrome after azacitidine treatment failure. J Clin Oncol. 2011 Aug 20;29(24):3322-7. doi: 10.1200/JCO.2011.35.8135. Epub 2011 Jul 25.
• Background Zeidan AM, Stahl M, Hu X, Wang R, Huntington SF, Podoltsev NA, Gore SD, Ma X, Davidoff AJ. Long-term survival of older patients with MDS treated with HMA therapy without subsequent stem cell transplantation. Blood. 2018 Feb 15;131(7):818-821. doi: 10.1182/blood-2017-10-811729. Epub 2017 Dec 19. No abstract available.
• Background Bartenstein M, Deeg HJ. Hematopoietic stem cell transplantation for MDS. Hematol Oncol Clin North Am. 2010 Apr;24(2):407-22. doi: 10.1016/j.hoc.2010.02.003.
• Background Sekeres MA, Schoonen WM, Kantarjian H, List A, Fryzek J, Paquette R, Maciejewski JP. Characteristics of US patients with myelodysplastic syndromes: results of six cross-sectional physician surveys. J Natl Cancer Inst. 2008 Nov 5;100(21):1542-51. doi: 10.1093/jnci/djn349. Epub 2008 Oct 28.

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