On November 5, 2018 Daiichi Sankyo Company, Limited (hereafter, Daiichi Sankyo) reported that the European Medicines Agency (EMA) validated for review and granted accelerated assessment to the Marketing Authorization Application (MAA) for quizartinib for the treatment of adults with relapsed or refractory acute myeloid leukemia (AML) which is FLT3-ITD positive (Press release, Daiichi Sankyo, NOV 5, 2018, View Source [SID1234530874]).
Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:
Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing
Schedule Your 30 min Free Demo!
Validation confirms that the application is complete and commences the scientific review process by the EMA’s Committee for Medicinal Products for Human Use (CHMP). Accelerated assessment is given to products expected to be of major interest for public health and therapeutic innovation and can significantly reduce the review timelines.
The EU MAA is based on results of the pivotal phase 3 QuANTUM-R study of quizartinib, which was the first randomized phase 3 study to show that a FLT3 inhibitor prolonged overall survival as an oral, single agent compared to chemotherapy in patients with relapsed/refractory FLT3-ITD AML. Topline results of the phase 3 QuANTUM-R study were presented during the plenary program at the 23rd Congress of the European Hematology Association (EHA) (Free EHA Whitepaper) in June 2018.
"The accelerated assessment of the quizartinib MAA underscores the significant unmet need for patients with relapsed/refractory FLT3-ITD AML, a very aggressive form of the disease with no approved targeted treatment options in Europe," said Arnaud Lesegretain, Vice President, Oncology Research and Development and Head, AML Franchise, Daiichi Sankyo. "Achieving both these milestones are significant next steps and we look forward to working with the EMA to bring this important potential new targeted treatment option to patients in the EU."
Quizartinib is currently under accelerated regulatory review with the Japan Ministry of Health, Labour and Welfare (MHLW) for the treatment of adult patients with relapsed/refractory FLT3-ITD AML. Submission in the U.S. remains on track for the second half of fiscal year 2018.
In the QuANTUM-R study, the median treatment duration with quizartinib was 4 cycles of 28 days each versus 1 cycle in the salvage chemotherapy arm. Incidence of treatment-emergent adverse events was comparable between patients who received single agent quizartinib and those who received salvage chemotherapy. The most common adverse drug reactions (>30 percent, any Grade) in patients treated with quizartinib included infections, bleeding, nausea, asthenic conditions, pyrexia, febrile neutropenia and vomiting, and the most common Grade ≥ 3 adverse drug reactions (>20 percent) were infection and febrile neutropenia. The most common laboratory adverse reactions (incidence >50 percent) were decreased white blood cell count, decreased lymphocyte count, decreased hemoglobin, decreased neutrophil count and decreased platelet count. The safety profile observed in QuANTUM-R appears consistent with that observed at similar doses in the quizartinib clinical development program.
About FLT3-ITD Acute Myeloid Leukemia
AML is an aggressive blood and bone marrow cancer that causes uncontrolled growth and accumulation of malignant white blood cells that fail to function normally and interfere with the production of normal blood cells.1FLT3 gene mutations are one of the most common genetic abnormalities in AML.2 FLT3-ITD is the most common FLT3 mutation, affecting approximately one in four patients with AML.3,4,5,6 FLT3-ITD is a driver mutation that presents with high leukemic burden and has poor prognosis and a significant impact on disease management for patients with AML.4,7
Patients with FLT3-ITD AML have a worse overall prognosis, including an increased incidence of relapse, an increased risk of death following relapse and a higher likelihood of relapse following hematopoietic stem cell transplantation as compared to those without this mutation.8,9
About Quizartinib
Quizartinib, the lead investigational agent in the AML Franchise of the Daiichi Sankyo Cancer Enterprise, is an oral selective FLT3 inhibitor currently in phase 3 development for relapsed/refractory FLT3-ITD AML (QuANTUM-R) in the U.S. and EU; phase 3 development for newly-diagnosed FLT3-ITD AML (QuANTUM-First) in the U.S., EU and Japan; and, phase 2 development for relapsed/refractory FLT3-ITD AML in Japan.
Quizartinib has been granted Breakthrough Therapy designation for the treatment of adult patients with relapsed/refractory FLT3-ITD AML, and Fast Track designation for the treatment of relapsed/refractory AML by the U.S. Food and Drug Administration (FDA). Quizartinib also has been granted Orphan Drug designation by both the FDA and the European Commission (EC) for the treatment of AML and by the Japan Ministry of Health, Labour and Welfare (MHLW) for the treatment of FLT3-mutated AML.
Quizartinib is an investigational agent that has not been approved for any indication in any country. Safety and efficacy have not been established.