Study of Efficacy and Safety of MBG453 in Combination With Azacitidine in Subjects With Intermediate, High or Very High Risk Myelodysplastic Syndrome (MDS) as Per IPSS-R, or Chronic Myelomonocytic Leukemia-2 (CMML-2) — STIMULUS-MDS2  

Myelodysplastic Syndromes Clinical Trial

Official title: A Randomized, Double-blind, Placebo-controlled Phase III Multi-center Study of Azacitidine With or Without MBG453 for the Treatment of Patients With Intermediate, High or Very High Risk Myelodysplastic Syndrome (MDS) as Per IPSS-R, or Chronic Myelomonocytic Leukemia-2 (CMML-2)

Status Active, not recruiting

Clinical Trial Summary

This is a Phase III multi-center, randomized, two-arm parallel-group, double-blind, placebo-controlled study of MBG453 or placebo added to azacitidine in adult subjects with intermediate, high or very high-risk myelodysplastic syndrome (MDS) as per IPSS-R, or Chronic Myelomonocytic Leukemia-2 (CMML-2) who are not eligible for intensive chemotherapy or hematopoietic stem cell transplantation (HSCT) according to medical judgment by the investigator.

The purpose of the current study is to assess clinical effects of MBG453 in combination with azacitidine in adult subjects with IPSS-R intermediate, high, very high risk MDS and CMML-2.

Clinical Trial Description

This is a Phase III multi-center, randomized, two-arm parallel-group, double-blind, placebo controlled study of MBG453 or placebo added to azacitidine in adult subjects with intermediate, high or very high risk myelodysplastic syndrome (MDS) as per IPSS-R, or Chronic Myelomonocytic Leukemia-2 (CMML-2).

The primary objective of this study is to compare overall survival (OS) in the MBG453 plus azacitidine arm versus placebo plus azacitidine arm where OS is the time from randomization until death due to any cause.

Subjects will be randomized in a 1:1 ratio to treatment arms as follow: MBG453 800 mg IV Q4W plus azacytidine, Placebo IV Q4W plus azacitidine The randomization will be stratified into 4 groups: intermediate risk MDS, high risk MDS, very high risk MDS and CMML-2.

All subjects who discontinue both study treatments will enter a long-term post-treatment follow-up including response and PRO assessments, and/or survival follow-up for up to 5 years after the last subject was randomized.

Subjects will be treated until they experience progression of disease (including transformation to acute leukemia per WHO 2016 classification), experience unacceptable toxicity or discontinue the study treatment for other reasons.

Continuation of study treatment beyond progression (excluding transformation to acute leukemia: continuation in this case is not possible) may be possible in selected subjects. ;

Related Conditions & MeSH terms

• Leukemia
• Leukemia, Myelomonocytic, Chronic
• Leukemia, Myelomonocytic, Juvenile
• Myelodysplastic Syndromes
• Preleukemia
• Syndrome

• NCT number: NCT04266301
• Study type: Interventional
• Source: Novartis
• Status: Active, not recruiting
• Phase: Phase 3
• Start date: April 14, 2013
• Completion date: September 17, 2024