Natriuretic Effect of Amiloride in Relation to the Alpha Adducin Gene (ADD-AMI) RS4961 Variant (ADD-AMI)

May 11, 2024 updated by: Chiara Lanzani, Ospedale San Raffaele

Natriruetic Effect of Amiloride in Relation to the Alpha Adducin Gene (ADD-AMI) RS4961 Variant

The study is a non-pharmacological interventional, single-center, national, non-randomised, comparative and open label.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The study is carried out to evaluate primarily the difference in the activity of the renal transporter ENaC (through dosage of sodium) through its inhibition with a single dose of Amiloride in hypertensive patients characterized by the polymorphism of alpha Adducin rs496. It's also aimed to see the difference in potassium and the change in systolic and diastolic blood pressure after amiloride administration

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Italy
    • Lombardia
      • Milan, Lombardia, Italy, 20132
        • San Raffaele Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • male patients aged 18-60 years;
  • naïve hypertensive patients: newly diagnosed, never previously treated for hypertension;
  • BMI<30 Kg/m2,
  • documented first degree essential arterial hypertension (mean of the last 3 consecutive systolic BP measurements must be >=140 mmHg or diastolic BP >=90 mmHg;
  • signature of the informed consent for participation in the study
  • patient who has already undergone genomic DNA sampling (accompanied by relative consent) and genotyped for the ADD1 rs4961 variant (GG, GT or TT).

Exclusion Criteria:

known causes of secondary hypertension;

  • severe or malignant hypertension; history of renal artery disease;
  • significant renal disease (creatinine clearance less than 60 ml/min);
  • hyperkalemia (Kpl > 6mEq/l) at enrollment visit;
  • hypercalcaemia (Ca pl > 2.6 mmol/l) at enrollment visit;
  • symptomatic hyperuricemia (> 7.5 mg/dl);
  • liver disease (transaminases greater than 3 times the normal value);
  • cardiac pathologies (myocardial infarction, atrial fibrillation, etc.);
  • diabetes (fasting blood sugar >125mg/dl);
  • in therapy with statins, NSAIDs, systemic steroids;
  • known hypersensitivity to Amiloride or to any of the excipients;
  • patients unable to express a valid consent -

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: patients carrying the wild-type (GG) genotype of ADD1 rs4961
The protocol involves a test of oral administration of a single dose of Amiloride (5 or 10 mg based on body weight) to 20 patients carrying the wild-type (GG) genotype of ADD1 rs4961
Drug: Amiloride
administration of a single dose of 5 or 10 mg of Amiloride (based on body weight) After oral intake of the drug, the increase in sodium in the urine ends within 8 hours
Experimental: patients carriers of variant T (GT or TT)
The test involves the administration of a single dose of 5 or 10 mg of Amiloride to 20 hypertensive carriers of the T variant (GT or TT)
Drug: Amiloride
administration of a single dose of 5 or 10 mg of Amiloride (based on body weight) After oral intake of the drug, the increase in sodium in the urine ends within 8 hours

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Evaluate urinary sodium
Time Frame: 3 hrs and 6 hrs
Evaluation of sodium levels after oral administration of Amiloride
3 hrs and 6 hrs

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Evaluate potassium levels
Time Frame: 3 hrs and 6 hrs
Evaluation of potassium plasma levels after oral administration of Amiloride
3 hrs and 6 hrs
Evaluation of systolic blood pressure
Time Frame: 3 hrs and 6 hrs
Evaluation of systolic blood pressure after oral administration of Amiloride
3 hrs and 6 hrs
Evaluation of diastolic blood pressure
Time Frame: 3 hrs and 6 hrs
Evaluation of diastolic blood pressure after oral administration of Amiloride
3 hrs and 6 hrs

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Ospedale San Raffaele

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 28, 2018

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 20, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 20, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 4, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 11, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 16, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 16, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 11, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ADD-AMI

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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