This phase I trial studies the side effects and best dose of RNR Inhibitor COH29 in treating patients with solid tumors that have spread to other parts of the body, are growing or getting worse, have come back, are not responding to standard therapy, for which no standard therapy exists, or that cannot be removed by surgery. RNR Inhibitor COH29 may inhibit an enzyme called ribonucleotide reductase and may interfere with the ability of tumor cells to grow.
Additional locations may be listed on ClinicalTrials.gov for NCT02112565.
See trial information on ClinicalTrials.gov for a list of participating sites.
PRIMARY OBJECTIVES:
I. To determine the maximum tolerated dose of COH29 (ribonucleotide reductase [RNR] inhibitor COH29) and recommended dose for further phase II testing.
II. To determine the pharmacokinetics of COH29.
SECONDARY OBJECTIVES:
I. To characterize the safety and tolerability of COH29 by assessing toxicities per Common Terminology Criteria for Adverse Events (CTCAE) version 4.0.
II. To characterize any clinical activity of COH29 via objective tumor response.
III. To assess pharmacodynamic response of COH29 on ribonucleotide reductase (RR) and poly-adenosine diphosphate-ribose polymerase (PARP) activity in peripheral blood mononuclear cells (PBMCs).
IV. To explore baseline RRM2 tumor protein expression as a potential correlative marker for COH29 response.
V. To explore measurement of plasma cytokeratin 18 (CK18) as a surrogate pharmacodynamic marker of COH29 antitumor activity.
OUTLINE: This is a dose escalation study.
Patients receive RNR inhibitor COH29 orally (PO) twice daily (BID) on days 1-21. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up for 30 days.
Lead OrganizationCity of Hope Comprehensive Cancer Center
Principal InvestigatorVincent Chung