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New dialysis filter shows promise in small kidney study

NCT ID NCT04395131

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a new dialysis filter (Clearum HS) in 20 adults with end-stage kidney disease who were already on dialysis. The goal was to see if the new filter safely removes waste products like urea as well as or better than standard filters. Participants used their usual filter for 2 weeks, then switched to the Clearum filter for 6 weeks. The study focused on safety and how well the filter cleans the blood.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

20 people

The number who actually took part.

Started

Apr 2020

Finished

Aug 2020

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * ESRD Patients aged 18 years or older * Patients able to give informed consent (IC) and interested to participate in the study * Stable (according to the investigator) on hemodialysis for more than 3 months with previous treatments of 3x weekly hemodialysis or hemodiafiltration * Stable hemoglobin between 10 and 12 g/dl in the most recent two consecutive blood draws * Stable anticoagulation and ESA regimen with no dosing modifications in the past 1 month * Patients who have an adequate AVF or graft, capable of providing a blood flow rate of at least 300 mL/min according to sessions conducted in past month Exclusion Criteria: * Patients who have acute renal failure with the chance for recovery. * Patients who are pre-scheduled for a living kidney transplant within the next two months, who plan a change to PD within the next two months or who require single needle dialysis therapy. * Pregnant and lactating women. * Patients with a history of positive serology tests for Hepatitis B surface antigen, positive Hepatitis C total antibody, HIV and syphilis. * Patients with known hemodynamic instability, anemia (Hgb \< 90 g/L), and/or severe bleeding risks secondary to coagulation disorders. * Patients with active or ongoing infection per investigator's judgement. * Patients with a history of solid tumors requiring anti-cancer therapy in the past or next 6 months or a life expectancy less than 1 year or patients with a history of a hematology neoplasm. * Patients diagnosed with a NYHA Class IV congestive heart failure, or acute coronary syndrome and/or who have suffered a myocardial infarction within three months prior to the start of the study. * Patients with a history of severe mental disorders. * Patients who are currently participating or have previously participated in another interventional clinical trial in the past 4 weeks. * Patients who have had an allergic response to polyarylethersulfone (PAES) or polysulfone membranes or have a history of poor tolerance to dialyzers with synthetic membranes. * Patients with advanced liver, heart or pulmonary disease as judged by the Investigator * Patients with any comorbidity possibly conflicting with the study purpose or procedures as judged by the Investigator.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • DaVita Clinical Research Germany

    Düsseldorf, D-40201, Germany

More trials for these conditions

Other studies related to the condition(s) this trial covers.