RX108 is a novel, potent, small-molecule inhibitor of Na+/K+-ATPase. The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics (PK) and efficacy of RX108 in patients with locally advanced or metastatic solid tumors.
This is a open-label, two-part study comprised of a dose escalation part and a dose expansion part. In the dose escalation part, RX108 will be administered in ascending doses to evaluate the safety and tolerability of RX108 and determine the maximum tolerated dose (MTD) and/or recommended Phase 2 dose (RP2D). The dose expansion part will assess the safety, pharmacokinetics, and efficacy of RX108 at the RP2D.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
80
RX108
Cedars-Sinai
Los Angeles, California, United States
RECRUITINGUniversity of Texas at MD Anderson Cancer Center
Houston, Texas, United States
RECRUITINGPart 1: Maximum tolerated dose (MTD) of RX108
All patients treated with RX108 across all dosing levels will have safety assessed in order to determine the MTD.
Time frame: Day 1 to 30
Part 2: Incidence of adverse events (AEs) and serious adverse events (SAEs).
The incidence of adverse events (AEs) and serious adverse events (SAEs) for each cohort dose will be assessed using CTCAE v 5.0.
Time frame: Day 1 to 30 days post last dose
Maximum observed plasma concentration (Cmax) of RX108
Pharmacokinetics parameter
Time frame: Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8
Time to reach maximum concentration (Tmax)
Pharmacokinetics parameter
Time frame: Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8
Area under the plasma concentration-time curve (AUC)
Pharmacokinetics parameter
Time frame: Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8
Elimination half-life (T1/2)
Pharmacokinetics parameter
Time frame: Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8
Systemic clearance (CL)
Pharmacokinetics parameter
Time frame: Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8
Response rate (per RECIST v1.1)
Evaluate the preliminary efficacy of RX108 in subjects with locally advanced or metastatic solid tumors (subjects with measurable disease in Part 2).
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: Screening and every 2 cycles for the first 6 cycles and every 3 cycles thereafter (each cycle is 28 days), assessed up to 24 months.