Kura Oncology Doses First Patient in Phase 1 Clinical Trial of Menin-MLL Inhibitor KO-539 in Acute Myeloid Leukemia
– KO-539 is a first-in-class small molecule inhibitor of the menin-MLL interaction –
– First-in-human trial to determine MTD, expand to genetic subgroups such as NPM1 –
“We believe KO-539 represents a differentiated approach to the treatment of patients with AML,” said
This Phase 1, open-label, dose-escalation study is designed to determine the maximum tolerated dose (MTD) of KO-539 in patients with relapsed or refractory AML. KO-539 will be administered as a once daily oral dose in 28-continuous-day cycles. Upon completion of the dose-escalation portion of the trial, expansion cohorts are planned to further asses the safety and activity of KO-539 in specific genetic subgroups, such as NPM1. Additional information about the Phase 1 trial of KO-539 can be found at ClinicalTrials.gov using the identifier NCT04067336.
KO-539 is a potent and selective small molecule inhibitor of the menin-MLL protein-protein interaction. MLL-rearranged leukemias are characterized by chromosomal translocations of the KMT2A gene that are primarily found in patients with AML and acute lymphoblastic leukemia (ALL). These translocations form oncogenes encoding MLL fusion proteins, which play a causative role in the onset, development and progression of MLL-rearranged leukemias. The target genes of the MLL fusion proteins are also found to be overexpressed in a broader subset of AMLs characterized by oncogenic driver mutations in genes, such as NPM1. These mutations also appear to be dependent on the interaction between menin and MLL, suggesting that the menin-MLL complex is a central node in epigenetic dysregulation driven by distinct oncogenic driver mutations known to be important in AML and other hematologic malignancies.
In preclinical studies, KO-539 has demonstrated potent and selective inhibition of the proliferation of MLL-rearranged leukemia cell lines. Kura has also generated preclinical data showing robust and durable anti-tumor activity in multiple in vivo models of AML characterized by MLL-rearrangements or oncogenic driver mutations in genes, such as NPM1.
This news release contains certain forward-looking statements that involve risks and uncertainties that could cause actual results to be materially different from historical results or from any future results expressed or implied by such forward-looking statements. Such forward-looking statements include statements regarding, among other things, the efficacy, safety and therapeutic potential of Kura’s product candidate KO-539, the progress and expected timing of Kura’s drug development programs and clinical trials and the potential benefits of Orphan Drug Designation. Factors that may cause actual results to differ materially include the risk that compounds that appeared promising in early research or clinical trials do not demonstrate safety and/or efficacy in later preclinical studies or clinical trials, the risk that Kura may not obtain approval to market its product candidates, uncertainties associated with performing clinical trials, regulatory filings and applications, risks associated with reliance on third parties to successfully conduct clinical trials, the risks associated with reliance on outside financing to meet capital requirements, risks that the actual benefits of Orphan Drug Designation will not be as expected and other risks associated with the process of discovering, developing and commercializing drugs that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such drugs. You are urged to consider statements that include the words "may," "will," "would," "could," "should," "believes," "estimates," "projects," "promise," "potential," "expects," "plans," "anticipates," "intends," "continues," "designed," "goal," or the negative of those words or other comparable words to be uncertain and forward-looking. For a further list and description of the risks and uncertainties the Company faces, please refer to the Company's periodic and other filings with the
Vice President, Investor Relations &
Westwicke Partners, LLC
Source: Kura Oncology, Inc.