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A Study of RX108 in Patients With Locally Advanced or Metastatic Solid Tumors

A Phase 1, Open-label Study of the Safety, Pharmacokinetics and Efficacy of RX108 in Patients With Locally Advanced or Metastatic Solid Tumors

Status
UNKNOWN
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03646071
Enrollment
80
Registered
2018-08-24
Start date
2018-08-01
Completion date
2023-12-31
Last updated
2022-04-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Locally Advanced Solid Tumors, Metastatic Solid Tumors

Keywords

Locally Advanced, Metastatic, Solid Tumor

Brief summary

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.

Detailed description

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.

Interventions

DRUGRX108

RX108

Sponsors

NeuPharma, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically confirmed locally advanced or metastatic cancer that has failed all systemic therapies known to confer clinical benefit * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Minimum age of 18 years * Adequate hematologic, hepatic and renal function * Written Informed Consent * Must agree to use adequate contraception (females and males)

Exclusion criteria

* History of certain cardiac abnormalities * History of inadequate pulmonary function * Symptomatic brain metastasis * Treatment with prohibited medications * Known contra-indication to digoxin * Treatment with any unapproved therapies for cancer, or any other anti-cancer therapy within 3 weeks * Any toxicity related to prior treatment must have resolved to Grade 1 or less, with the exception of alopecia * Clinically significant active infection requiring systemic antibiotic treatment * Females who are pregnant or breastfeeding

Design outcomes

Primary

MeasureTime frameDescription
Part 1: Maximum tolerated dose (MTD) of RX108Day 1 to 30All patients treated with RX108 across all dosing levels will have safety assessed in order to determine the MTD.
Part 2: Incidence of adverse events (AEs) and serious adverse events (SAEs).Day 1 to 30 days post last doseThe incidence of adverse events (AEs) and serious adverse events (SAEs) for each cohort dose will be assessed using CTCAE v 5.0.

Secondary

MeasureTime frameDescription
Area under the plasma concentration-time curve (AUC)Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8Pharmacokinetics parameter
Elimination half-life (T1/2)Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8Pharmacokinetics parameter
Maximum observed plasma concentration (Cmax) of RX108Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8Pharmacokinetics parameter
Response rate (per RECIST v1.1)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.Evaluate the preliminary efficacy of RX108 in subjects with locally advanced or metastatic solid tumors (subjects with measurable disease in Part 2).
Systemic clearance (CL)Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8Pharmacokinetics parameter
Time to reach maximum concentration (Tmax)Day 1 and Day 3: Hours 0, 1, 2, 3, 5, 8Pharmacokinetics parameter

Countries

United States

Contacts

Primary ContactLyon Gleich, MD
l.gleich@medpace.com(513) 579-9911

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026