Clinical Phase I Study Investigating MSC2490484A, an Inhibitor of a DNA-dependent Protein Kinase, in Advanced Solid Tumors or Chronic Lymphocytic Leukemia

Overview

MSC2490484A is an investigational drug that is being evaluated for the treatment of subjects with advanced solid tumors or chronic lymphocytic leukemia (CLL) that likely differs from other cancers in how it repairs damaged DNA (genetic material). This is a first-in-man Phase I study, which means that it is the first time the study drug is being used in humans. The main purpose is to determine the highest dose that does not cause unacceptable side effects. The second is to determine the appropriate dose to use in future research for subjects with cancer. Othergoals of the study are to learn about the drug's safety and side effects, how it affects the tumor, and how the body processes the drug.

This is a Phase I, first-in-human, open-label, dose escalation, and dose expansion trial designed to explore the safety, tolerability, PK and PD profiles, and clinical activity of MSC2490484A administered daily as a single agent to subjects with advanced solid tumors or CLL likely to have alterations in DNA repair mechanisms. Dose Escalation : Subjects will receive MSC2490484A continuously at the starting dose of 100 mg once daily. Sequential treatment cohorts will receive ascending doses of MSC2490484A once daily or twice daily (if determined to be appropriate by the Safety Monitoring Committee \[SMC\]) following a standard "3+3" design. The SMC will make dose escalation decisions based on review of available safety, tolerability, Pharmacokinetic (PK), and Pharmacodynamic (PD) data. Once the maximum tolerated dose (MTD) has been established, an Recommended Phase II Dose (RP2D) will be defined by the SMC, either at the MTD level or another dose level, depending on the available data on safety, efficacy, PK, and PD observed in the trial. The SMC may decide to stop dose escalation at any time during the trial. Up to 12 subjects will be enrolled at the RP2D/Optimal biologic dose (OBD) to confirm safety and tolerability and explore the PK and PD profile of MSC2490484A. Expansion cohorts: Once subjects have been evaluated at the RP2D, additional subjects will be enrolled into 2 or more expansion cohorts (20 evaluable subjects per expansion cohort) to evaluate clinical efficacy in tumors likely to have alterations in the DNA repair mechanism (eg, CLL and other tumor types). Subjects are evaluable for efficacy if they have received at least 1 dose of study drug and have radiographic baseline. Subjects who are not evaluable for efficacy will be replaced.