A Phase 2 Study of ELX-02 in Patients With Nephropathic Cystinosis (NCT04069260) | Clinical Trial Compass
TerminatedPhase 2
A Phase 2 Study of ELX-02 in Patients With Nephropathic Cystinosis
Stopped: Due to study design limitations, this study has been discontinued and will not proceed with the 2nd cohort as contemplated in the original protocol.
Canada3 participantsStarted 2019-08-02
Plain-language summary
This is a Phase 2 open label study to evaluate the safety, tolerability, PK, and PD of multiple dose levels of SC administered ELX-02 in patients with cystinosis with nonsense mutation in at least one allele.
Six patients will be enrolled in the trial.
The study will comprise of the following periods for each patient:
* A screening period of up to 6 weeks
* A total treatment period of 4 weeks
* A safety follow-up period of 4 weeks after the last treatment
Each patient will receive three escalating doses as follows:
* Treatment period 1: ELX-02 0.5 mg/kg SC daily for 7 days (total dose not to exceed 3.5 mg/kg for this week; the daily dose will be individualized to achieve the target weekly exposure of about 47.5 µg\*h/mL)
* Treatment period 2: ELX-02 1.0 mg/kg SC daily for 7 days (total dose not to exceed 7.0 mg/kg for this week; the daily dose will be individualized to achieve the target weekly exposure of about 95 µg\*h/mL)
* Treatment period 3: ELX-02 2.0 mg/kg SC daily for 14 days (total dose not to exceed 14 mg/kg for these two weeks; the daily dose will be individualized to achieve the target weekly exposure of about 190 µg\*h/mL)
Who can participate
Age range
12 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Patients must meet all of the following criteria to participate in this study:
1. Male or female patients who, at the time of screening, are 18 years of age or older (Cohort 1) or ≥12 years of age (Cohort 2)
2. A diagnosis of nephropathic cystinosis and biallelic CTNS mutations, including at least one nonsense mutation
3. Patients should have a mild to moderate disease estimated glomerular filtration rate ≥40 mL/min/1.73m2 using the Chronic Kidney Disease Epidemiology Collaboration CKD-EPI formula
4. Body mass index of 19.0 to 30.0 kg/m2. Patients with a lower BMI may be entered into the study at the discretion of the Investigator following consultation with the Sponsor
5. Renal transplant permitted with stable graft function (serum creatinine) for 3 months prior to Screening
Patients with any of the following characteristics/conditions will not be included in the study:
1. Participation in clinical study including administration of any investigational drug or device in the last 30 days or 5 half-lives (whichever is longer) prior to investigational product dosing in the current study
2. Concomitant use of cysteamine bitartrate from 7 days prior to baseline until 7 days following final administration ELX-02
3. An average systolic blood pressure and/or diastolic blood pressure ≥95th percentile for sex, age, and height on 3 or more occasions during the screening period
4. Patients without documented prior aminoglycoside exposure who have a mitochondrial mutation that has been…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
AEs associated with different dose levels of ELX-02
Timeframe: From the time of first dosing through the follow-up visit, an average of approximately 10 weeks
2
Area under the plasma concentration curve from time zero to 24 hours (AUC0-24h)
Timeframe: Day 1 of treatment periods 1, 2, and 3
3
Maximum observed plasma concentration (Cmax)
Timeframe: Day 1 of treatment periods 1, 2, and 3
4
Observed plasma concentration at 1 hour post dose (C1h)
Timeframe: Days 1, 2, 5, and 7 of treatment periods 1-2; Days 1, 2, 5, 7, 10, and 14 of treatment period 3
5
Amount of ELX-02 excreted in urine from 0 to 24 hours (Ae24h)