Randomized Study of ON 01910.Na in Refractory Myelodysplastic Syndrome Patients With Excess Blasts

Summary

The primary objective of this study is to compare overall survival (OS) in patients receiving ON 01910.Na + best supportive care (BSC) to OS of patients receiving BSC in a population of patients with myelodysplastic syndrome (MDS) with excess blasts (5% to 30% bone marrow blasts) who have failed azacitidine or decitabine treatment. This patient population has no available therapy and a short life expectancy (approximately 4 months). The high level of bone marrow activity of ON 01910.Na documented in Phase 1 and 2 studies has the potential to delay substantially the transition of MDS to Acute Myeloid Leukemia(AML), a very significant and severe complication, which shortens survival of these MDS patients.

Timeline

Start

2010-11

Primary completion

2018-10-03

Completion

2018-10-03

Publications

• Background Seetharam M, Fan AC, Tran M, Xu L, Renschler JP, Felsher DW, Sridhar K, Wilhelm F, Greenberg PL. Treatment of higher risk myelodysplastic syndrome patients unresponsive to hypomethylating agents with ON 01910.Na. Leuk Res. 2012 Jan;36(1):98-103. doi: 10.1016/j.leukres.2011.08.022. Epub 2011 Sep 14.
• Background Athuluri-Divakar SK, Vasquez-Del Carpio R, Dutta K, Baker SJ, Cosenza SC, Basu I, Gupta YK, Reddy MV, Ueno L, Hart JR, Vogt PK, Mulholland D, Guha C, Aggarwal AK, Reddy EP. A Small Molecule RAS-Mimetic Disrupts RAS Association with Effector Proteins to Block Signaling. Cell. 2016 Apr 21;165(3):643-55. doi: 10.1016/j.cell.2016.03.045.
• Results Garcia-Manero G, Fenaux P, Al-Kali A, Baer MR, Sekeres MA, Roboz GJ, Gaidano G, Scott BL, Greenberg P, Platzbecker U, Steensma DP, Kambhampati S, Kreuzer KA, Godley LA, Atallah E, Collins R Jr, Kantarjian H, Jabbour E, Wilhelm FE, Azarnia N, Silverman LR; ONTIME study investigators. Rigosertib versus best supportive care for patients with high-risk myelodysplastic syndromes after failure of hypomethylating drugs (ONTIME): a randomised, controlled, phase 3 trial. Lancet Oncol. 2016 Apr;17(4):496-508. doi: 10.1016/S1470-2045(16)00009-7. Epub 2016 Mar 9.
• Results Navada SC, Silverman LR. The safety and efficacy of rigosertib in the treatment of myelodysplastic syndromes. Expert Rev Anticancer Ther. 2016 Aug;16(8):805-10. doi: 10.1080/14737140.2016.1209413. Epub 2016 Jul 15.
• Results Al-Kali A. Relationship of bone marrow blast (BMBL) response to overall survival (OS) in a multicenter study of rigosertib (Rigo) in patients (pts) with myelodysplastic syndrome (MDS) with excess blasts progressing on or after treatment with a hypomethylating agent (HMA). Journal of Clinical Oncology 2017 35:15_suppl, 7056-7056 ASCO 2017
• Results Garcia-Manero G, Fenaux P. Comprehensive Analysis of Safety: Rigosertib in 557 Patients with Myelodysplastic Syndromes (MDS) and Acute Myeloid Leukemia (AML). Blood Dec 2016, 128 (22) 2011; ASH 2016.

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