ClinicalTrials.gg
RecruitingNCT06671535Updated Mar 4, 2025

Effect of Kidney Replacement Therapy with Polymethylmethacrylate Membranes on Pruritus-related Quality of Life in Patients Receiving Maintenance Haemodialysis

An interventional study of Polymethylmethacrylate membrane and polysulfone membranes in CKD (Chronic Kidney Disease) Stage 5D, Hemodialysis and Pruritis, sponsored by Saint Petersburg State University, Russia. Recruiting at 1 site in Russian Federation. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-03-04.

Sponsored by Saint Petersburg State University, Russia · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2025, 1 year 5 months ago, but the record still lists the study as recruiting.
  • Started Jan 2025; still recruiting 1 year 9 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
62
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This randomized controlled trial aims to evaluate the effect of polymethylmethacrylate dialysis membranes use on the intensity of pruritus in patients with CKD stage 5D receiving maintenance hemodialysis.

The main question it aims to answer is: Does the use of polymethylmethacrylate (PMMA) membranes reduce the intensity of pruritus in dialysis patients?

Researchers will compare PMMA membranes to standard polysulfone-based membranes to see if PMMA works to reduce moderate-to-severe pruritis and pruritis-related quality of life.

Participants will:

  • receive maintenance hemodialysis with PMMA or polysulfone membranes for 2 months;
  • fill in questionnaires about intensity of pruritis and its impact on daily life.
02

Conditions studied

  • CKD (Chronic Kidney Disease) Stage 5D
  • Hemodialysis
  • Pruritis

Keywords

  • polymethylmethacrylate membranes
  • CKD-associated pruritis
  • PMMA membranes
03

In context

Renal Insufficiency, Chronic

3,090 studies on the registry are indexed under Renal Insufficiency, Chronic; 698 are open to participants now.

This study's planned enrollment of 62 is below the median of 73 across 2,157 interventional studies indexed under Renal Insufficiency, Chronic.

Browse Renal Insufficiency, Chronic studies →

Lead sponsor

Saint Petersburg State University, Russia is the lead sponsor of 34 studies on the registry; 14 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of CKD stage 5D, maintenance hemodialysis not less than 3 months prior screening;
  • Moderate-to-severe pruritis (WI-NRS score ≥ 4);
  • Adequate dialysis dose (spKt/V≥1,4 and/or eKt/V≥1,2);
  • Dialysis treatment regimen: three sessions per week of at least 4 hours duration;
  • Signed .

Exclusion criteria

Exclusion Criteria:

  • Presence of active skin disease, cholestasis, severe secondary hyperparathyroidism and other conditions that, in the investigator's opinion, may be responsible for pruritus.
  • Noncompliance of the patient with the protocol (in the investigator's opinion).
  • Use of haemodiafiltration.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
62 participants (estimated)

Study arms

  • Experimental
    PMMA arm

    Patients in the experimental group will receive maintenance hemodialysis using polymetilmethacrylate membranes for 2 months.

    Device: Polymethylmethacrylate membrane

  • Active comparator
    Polysulfone arm

    Patients in the control group will receive maintenance hemodialysis using polysulfone membranes for 2 months.

    Device: polysulfone membranes

Interventions

  • DevicePolymethylmethacrylate membrane

    A polymethylmethacrylate hollow fiber membrane (PMMA membrane) has unique properties including the uniform structure and the adsorption property.

  • Devicepolysulfone membranes

    Dialyzers containing polysulfone membranes are widely used for modern dialysis therapies as they allow efficient removal of a broad spectrum of uremic toxins.

06

What researchers measure

Primary outcomes

  1. 5D Elman Itch Scale total score

    The 5-D itch scale is a reliable, multidimensional measure of itching that has been validated in patients with chronic pruritus to able to detect changes over time. This questionnaire was designed to be useful as an outcome measure in clinical trials. The five dimensions are degree, duration, direction, disability and distribution.

    Time frame: From enrollment to the end of treatment at 8 weeks

Secondary outcomes

  1. WI-NRS score

    24-hour Worst Itching Intensity Numerical Rating Scale

    Time frame: From enrollment to the end of treatment at 8 weeks

  2. Skindex-16 score

    Multidimensional tool to assess pruritis

    Time frame: From enrollment to the end of treatment at 8 weeks

  3. Itch-MOS score

    Itch-MOS questionnaire aims to evaluate impact of pruritis on sleep.

    Time frame: From enrollment to the end of treatment at 8 weeks

  4. 5D Elman Itch Scale total score

    Time frame: From the end of active treatment to the end of follow-up (4 weeks)

  5. WI-NRS score

    Time frame: From the end of active treatment to the end of follow-up (4 weeks)

  6. Skindex-16 score

    Time frame: From the end of active treatment to the end of follow-up (4 weeks)

  7. Itch-MOS score

    Time frame: From the end of active treatment to the end of follow-up (4 weeks)

  8. C-reactive protein concentration

    Time frame: From enrollment to the end of treatment at 8 weeks

  9. Serum ferritin

    Time frame: From enrollment to the end of treatment at 8 weeks

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 4, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06671535
Lead sponsor
Saint Petersburg State University, Russia
Responsible party
Ekaterina Parshina (Chief of Nephrology and Dialysis department, Saint Petersburg State University, Russia) — Principal investigator
First posted
Nov 4, 2024
Start date
Jan 27, 2025
Primary completion
Jun 2025 (estimated)
Completion
Oct 2025 (estimated)
Last update
Mar 4, 2025

Study contacts

Ekaterina Parshina, PhD
Contact
pannn@yandex.ru
+7(921)6577372

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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