HemodialysisNCT03722381
Evaluation of Amlodipine Pharmacokinetics in Patients Receiving Hi Flux Hemodialysis
An observational study of Hemodialysis and Pharmacokinetics, run by University of Michigan at 1 site in United States.
Trial summary
The current study will evaluate the plasma pharmacokinetics of amlodipine in a cohort of 8 adult volunteers who are receiving regular hemodialysis treatment (HD) 3 days a week for 4 hours each day and have been taking a total daily dose of 5-10 mg of amlodipine besylate for >30 days as part of their usual care. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Hemodialysis, Pharmacokinetics
- What is being tested?
- Amlodipine Besylate
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2020to 30 Jan 2020
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Ambulatory in-center hemodialysis patients
Who may be able to join
- 18 years of age or older
- Indwelling tunneled catheter, AVF, AVG that is currently used for hemodialysis
- Receiving in-center hemodialysis 3 days a week for 3-4.5 hours each treatment
- Taking a total daily dose of 5-10 mg of amlodipine as prescribed by their physician
- Hemoglobin ≥ 9.5 g/dL on most recent laboratory assessment prior to study
Who cannot join
- Any condition that would not allow for arm BP to be taken
- Hemoglobin < 9.5 g/dL on most recent lab prior to study
- Patient is on a CYP3A4 inhibitor (most common in HD population include: amiodarone, clarithromycin, cyclosporine, diltiazem, erythromycin, fluconazole, fluoxetine, fluvoxamine, nefazodone, tamoxifen, verapamil, and grapefruit juice).
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Michigan Dialysis
Ann Arbor, Michigan, 48109
About this study
The current study will evaluate the plasma pharmacokinetics of amlodipine in a cohort of 8 adult volunteers who are receiving regular hemodialysis treatment (HD) 3 days a week for 4 hours each day and have been taking a total daily dose of 5-10 mg of amlodipine besylate for >30 days as part of their usual care. Blood sampling will occur over 13 hours, with frequent sampling during HD and in the 4 hours after termination of HD treatment. The 8 subjects will all receive their prescribed total daily dose of 5-10 mg 5 hours prior to HD treatment. The pre-HD sample will also be sent for pharmacogenomics genotyping. Safety and pharmacodynamic assessments (blood pressure (BP) and heart rate (HR) assessments) will be performed throughout the study. Axiom Precision Medicine Research Array (Affymetrix, Santa Clara, CA) will be used to evaluate genotype of CYP3A4. CYP3A4 phenotype will be evaluated using the ratio of parent drug to metabolite. Non-compartmental analyses will be performed to compare maximum concentrations (Cmax), time to maximum concentration and area under the curve from time 0 to the last measurable sample (AUClast) between the two phases. Compartmental analyses will be performed to construct a model to explain time-dependent changes in amlodipine clearance. Monte Carlo simulations will be performed to compare amlodipine pharmacokinetic profiles on and off HD.
- Conditions
- Hemodialysis, Pharmacokinetics
- Being tested
- Amlodipine Besylate
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Amlodipine BesylateDrug
Pharmacokinetics
What is being measured
The primary outcome is the main question the study is designed to answer.
Use pharmacokinetics to characterize the plasma concentration of amlodipine and its metabolite, 2-([4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl- 2-pyridyl]methoxy) acetic acid
Use pharmacokinetics to characterize the change in plasma concentration of amlodipine and its metabolite, 2-([4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl- 2-pyridyl]methoxy) acetic acid during and after HD
Measured: Pre-dialysis, during dialysis (30 minutes, 2 hours, end of treatment) and post-dialysis (30 minutes, 2 hours and 4 hours)
Secondary outcomes (2)
Characterize the Non-renal clearance phenotype and genotype
Evaluate the non-renal clearance of amlodipine in patients on HD.
Measured: 30 minutes
Characterize the Post-dialysis Rebound
Simulate change in predicted rebound of metoprolol concentrations
Measured: post-dialysis (30 minutes, 2 hours and 4 hours)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Oct 2018
- Study startJan 2020 (estimated)
- Primary completion30 Jan 2020 (estimated)
- Study completion30 Jan 2020 (estimated)
Why it stopped: Study activities were not initiated, and we do not plan to initiate them in the future.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HemodialysisStudies of the same condition, open and under way.
- More trials run by University of MichiganThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Michigan
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Amy Barton Pai, University of Michigan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03722381
- Sponsor's protocol ID
- HUM00143303
- Status last verified
- Jan 2020
- First submitted
- 9 Oct 2018
- Last updated
- 31 Jan 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 31 Jan 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Amlodipine Pharmacokinetics in Patients Receiving Hi Flux Hemodialysis
- ClinicalTrials.gov ID
- NCT03722381
- Acronym / sponsor ID
- HUM00143303
- Conditions
- Hemodialysis, Pharmacokinetics
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: Study activities were not initiated, and we do not plan to initiate them in the future.
- Enrolment
- 0 participants (actual)
- Lead sponsor
- University of MichiganUniversity, hospital or other
- Study start
- Jan 2020 (estimated)
- Primary completion
- 30 Jan 2020 (estimated)
- Study completion
- 30 Jan 2020 (estimated)
- First posted
- 26 Oct 2018 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The current study will evaluate the plasma pharmacokinetics of amlodipine in a cohort of 8 adult volunteers who are receiving regular hemodialysis treatment (HD) 3 days a week for 4 hours each day and have been taking a total daily dose of 5-10 mg of amlodipine besylate for >30 days as part of their usual care. Blood sampling will occur over 13 hours, with frequent sampling during HD and in the 4 hours after termination of HD treatment. The 8 subjects will all receive their prescribed total daily dose of 5-10 mg 5 hours prior to HD treatment. The pre-HD sample will also be sent for pharmacogenomics genotyping. Safety and pharmacodynamic assessments (blood pressure (BP) and heart rate (HR) assessments) will be performed throughout the study. Axiom Precision Medicine Research Array (Affymetrix, Santa Clara, CA) will be used to evaluate genotype of CYP3A4. CYP3A4 phenotype will be evaluated using the ratio of parent drug to metabolite. Non-compartmental analyses will be performed to compare maximum concentrations (Cmax), time to maximum concentration and area under the curve from time 0 to the last measurable sample (AUClast) between the two phases. Compartmental analyses will be performed to construct a model to explain time-dependent changes in amlodipine clearance. Monte Carlo simulations will be performed to compare amlodipine pharmacokinetic profiles on and off HD.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Ambulatory in-center hemodialysis patients
Key inclusion criteria (5 listed)
- 18 years of age or older
- Indwelling tunneled catheter, AVF, AVG that is currently used for hemodialysis
- Receiving in-center hemodialysis 3 days a week for 3-4.5 hours each treatment
- Taking a total daily dose of 5-10 mg of amlodipine as prescribed by their physician
- Hemoglobin ≥ 9.5 g/dL on most recent laboratory assessment prior to study
Key exclusion criteria (3 listed)
- Any condition that would not allow for arm BP to be taken
- Hemoglobin < 9.5 g/dL on most recent lab prior to study
- Patient is on a CYP3A4 inhibitor (most common in HD population include: amiodarone, clarithromycin, cyclosporine, diltiazem, erythromycin, fluconazole, fluoxetine, fluvoxamine, nefazodone, tamoxifen, verapamil, and grapefruit juice).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Amlodipine BesylatePharmacokinetics | Drug | – |
Primary outcome
Use pharmacokinetics to characterize the plasma concentration of amlodipine and its metabolite, 2-([4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl- 2-pyridyl]methoxy) acetic acid
Time frame: Pre-dialysis, during dialysis (30 minutes, 2 hours, end of treatment) and post-dialysis (30 minutes, 2 hours and 4 hours)
Use pharmacokinetics to characterize the change in plasma concentration of amlodipine and its metabolite, 2-([4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl- 2-pyridyl]methoxy) acetic acid during and after HD
2 secondary outcomes
Characterize the Non-renal clearance phenotype and genotype
Time frame: 30 minutes
Characterize the Post-dialysis Rebound
Time frame: post-dialysis (30 minutes, 2 hours and 4 hours)
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 31 Jan 2020.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Hemodialysis and Pharmacokinetics, run by University of Michigan at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 31 Jan 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Use pharmacokinetics to characterize the plasma concentration of amlodipine and its metabolite, 2-([4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl- 2-pyridyl]methoxy) acetic acid (time frame: Pre-dialysis, during dialysis (30 minutes, 2 hours, end of treatment) and post-dialysis (30 minutes, 2 hours and 4 hours)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 Jan 2020.