This phase I trial studies the side effects and best dose of L-selenomethionine when given together with axitinib in treating patients with clear cell renal cell carcinoma that has spread from the primary site (place where it started) to other places in the body and usually cannot be cured or controlled with treatment (advanced metastatic). L-selenomethionine may stop the growth of tumor cells by blocking the growth of new blood vessels necessary for tumor growth. Axitinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving L-selenomethionine together with axitinib may be a better treatment for advanced metastatic clear cell renal cell carcinoma
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT02535533.
PRIMARY OBJECTIVES:
I. To characterize the safety profile of combining L-selenomethionine (SLM) and axitinib in advanced metastatic clear cell renal cell carcinoma (CCRCC).
II. To define the dose of SLM in combination with a standard dose of axitinib for phase 2 trial.
III. to characterize the dose-concentration relationship and estimate the effective administered dose of selenium necessary to achieve the target blood concentration range informed by preclinical data. (Pilot phase)
SECONDARY OBJECTIVES:
I. To determine that the dose of SLM administered is sufficient to alter the expression levels of hypoxia inducible factor 1, alpha subunit (HIF1a), hypoxia inducible factor-2 alpha subunit (HIF2a), vascular endothelial growth factor (VEGF) and their associated micro-ribonucleic acid (RNA)s 210, 155, and LET7b.
II. To determine the SLM concentration when combined with axitinib.
III. To obtain preliminary estimates of efficacy in terms of:
IIIa. Progression-free survival (PFS).
IIIb. Objective response rate (stable disease [SD]+partial response [PR]+complete response [CR]).
IIIc. Overall survival in patients with advanced metastatic CCRCC.
OUTLINE: This is a dose-escalation study of L-selenomethionine.
Patients receive L-selenomethionine orally (PO) twice daily (BID) on days 1-14. Patients then receive L-selenomethionine PO once daily (QD) and axitinib PO BID on days 1-28. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients tolerating axitinib for at least two consecutive weeks with no adverse reactions > grade 2 considered clinically significant may receive escalated doses of axitinib at the discretion of their treating physician.
After completion of study treatment, patients are followed up at 28 days and then every 6 months thereafter.
Lead OrganizationUniversity of Iowa/Holden Comprehensive Cancer Center
Principal InvestigatorMohammed M. Milhem