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Medium Cut-Off and High-Flux Membranes on Mineral and Bone Metabolism in Hemodialysis Patients (MBD-HD)

9 settembre 2026 aggiornato da: Veysel Baran TOMAR, Gazi University

Prospective Comparative Evaluation of the Effects of Medium Cut-Off and High-Flux Hemodialysis Membranes on Mineral and Bone Metabolism Biomarkers and Body Composition in Maintenance Hemodialysis Patients

This study aims to compare the effects of medium cut-off (MCO) and high-flux hemodialysis membranes on mineral and bone metabolism biomarkers in patients receiving maintenance hemodialysis. Chronic kidney disease-mineral and bone disorder (CKD-MBD) is characterized by disturbances in biomarkers such as fibroblast growth factor-23 (FGF-23) and sclerostin, which are associated with bone turnover, vascular calcification, and adverse clinical outcomes.

This is a single-center, prospective, randomized, open-label, two-sequence, two-period crossover clinical study. Thirty adult patients receiving maintenance hemodialysis will be randomized to receive either MCO membrane treatment followed by high-flux membrane treatment or the reverse sequence, with each treatment period lasting three months.

Serum FGF-23 and sclerostin levels will be measured at baseline, Month 3, and Month 6. Additional assessments will include pulse wave velocity (PWV), body composition monitoring (BCM), handgrip strength, health-related quality of life (KDQOL-36), pruritus severity (UP-Dial), and pain assessment (SF-MPQ). The study will evaluate whether MCO membranes provide additional benefits compared with conventional high-flux membranes regarding CKD-MBD-related biomarkers and patient-centered outcomes.

Panoramica dello studio

Stato

Attivo, non reclutante

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Chronic kidney disease-mineral and bone disorder (CKD-MBD) is a common complication in patients receiving maintenance hemodialysis and is associated with abnormalities in mineral metabolism, bone turnover, vascular calcification, and increased cardiovascular risk. Biomarkers such as fibroblast growth factor-23 (FGF-23) and sclerostin play important roles in the pathophysiology of CKD-MBD and have been associated with adverse clinical outcomes in patients with end-stage kidney disease.

Medium cut-off (MCO) hemodialysis membranes have been developed to enhance the removal of middle-molecular-weight uremic toxins compared with conventional high-flux membranes. Because FGF-23 and sclerostin are relatively large circulating molecules, MCO membranes may provide improved clearance and potentially influence CKD-MBD-related biological pathways.

This study is a single-center, prospective, randomized, open-label, two-sequence, two-period crossover clinical investigation conducted in maintenance hemodialysis patients. Eligible participants will be randomized in a 1:1 ratio to one of two treatment sequences. Sequence A will receive MCO hemodialysis for three months followed by high-flux hemodialysis for three months. Sequence B will receive high-flux hemodialysis for three months followed by MCO hemodialysis for three months.

Assessments will be performed at baseline, Month 3, and Month 6. Primary outcome measures include changes in serum FGF-23 and sclerostin concentrations. Secondary outcome measures include changes in pulse wave velocity (PWV), body composition parameters measured by BCM, handgrip strength, health-related quality of life (KDQOL-36), pruritus severity (UP-Dial), and pain characteristics (SF-MPQ).

Routine laboratory evaluations will be performed according to standard clinical practice. In addition, blood samples will be collected for FGF-23 and sclerostin measurements at each study visit. Safety assessments will include monitoring of adverse events, dialysis-related intolerance, and clinically significant medical events throughout the study period.

The results of this study are expected to provide evidence regarding the effects of MCO membranes on CKD-MBD-related biomarkers and patient-centered outcomes and may contribute to optimizing membrane selection strategies in maintenance hemodialysis practice.

Tipo di studio

Interventistico

Iscrizione (Stimato)

30

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

    • Ankara
      • Ankara, Ankara, Turchia (Türkiye), 06500
        • Gazi University Faculty of Medicine, Department of Nephrology, Hemodialysis Unit

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

  • Age 18 to 80 years.
  • Receiving maintenance hemodialysis for at least 6 months.
  • Clinically stable and receiving thrice-weekly hemodialysis.
  • Able to comply with study procedures, questionnaires, and scheduled assessments.
  • Able and willing to provide written informed consent.

Exclusion Criteria:

  • Acute infection at screening or enrollment.
  • Major surgery within the previous 3 months.
  • Active malignancy requiring ongoing treatment.
  • Terminal illness with limited life expectancy.
  • Physical or cognitive impairment preventing completion of study procedures or questionnaires.
  • Inability or unwillingness to provide written informed consent.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione incrociata
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Sequence A (MCO to High-Flux)
Participants randomized to Sequence A will receive medium cut-off (MCO) hemodialysis membranes during Period 1 (Months 0-3), followed by high-flux hemodialysis membranes during Period 2 (Months 3-6). Hemodialysis will be performed three times weekly according to standard clinical practice. Serum fibroblast growth factor-23 (FGF-23), sclerostin, pulse wave velocity (PWV), body composition parameters, handgrip strength, and patient-reported outcomes will be assessed at baseline, Month 3, and Month 6.
A medium cut-off (MCO) hemodialysis membrane used during maintenance hemodialysis treatment. Participants assigned to MCO treatment will receive thrice-weekly hemodialysis according to standard clinical practice. The intervention is intended to enhance the removal of middle-molecular-weight solutes and to evaluate its effects on mineral and bone metabolism biomarkers, including fibroblast growth factor-23 (FGF-23) and sclerostin, as well as body composition, vascular stiffness, and patient-reported outcomes.
A conventional high-flux hemodialysis membrane used during maintenance hemodialysis treatment. Participants assigned to high-flux treatment will receive thrice-weekly hemodialysis according to standard clinical practice. This intervention serves as the comparator for evaluating the effects of medium cut-off membranes on mineral and bone metabolism biomarkers, including fibroblast growth factor-23 (FGF-23) and sclerostin, as well as body composition, vascular stiffness, and patient-reported outcomes.
Sperimentale: Sequence B (High-Flux to MCO)
Participants randomized to Sequence B will receive high-flux hemodialysis membranes during Period 1 (Months 0-3), followed by medium cut-off (MCO) hemodialysis membranes during Period 2 (Months 3-6). Hemodialysis will be performed three times weekly according to standard clinical practice. Serum fibroblast growth factor-23 (FGF-23), sclerostin, pulse wave velocity (PWV), body composition parameters, handgrip strength, and patient-reported outcomes will be assessed at baseline, Month 3, and Month 6.
A medium cut-off (MCO) hemodialysis membrane used during maintenance hemodialysis treatment. Participants assigned to MCO treatment will receive thrice-weekly hemodialysis according to standard clinical practice. The intervention is intended to enhance the removal of middle-molecular-weight solutes and to evaluate its effects on mineral and bone metabolism biomarkers, including fibroblast growth factor-23 (FGF-23) and sclerostin, as well as body composition, vascular stiffness, and patient-reported outcomes.
A conventional high-flux hemodialysis membrane used during maintenance hemodialysis treatment. Participants assigned to high-flux treatment will receive thrice-weekly hemodialysis according to standard clinical practice. This intervention serves as the comparator for evaluating the effects of medium cut-off membranes on mineral and bone metabolism biomarkers, including fibroblast growth factor-23 (FGF-23) and sclerostin, as well as body composition, vascular stiffness, and patient-reported outcomes.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in Serum Fibroblast Growth Factor-23 (FGF-23)
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in serum fibroblast growth factor-23 (FGF-23) concentrations during treatment with medium cut-off and high-flux hemodialysis membranes. Serum FGF-23 levels will be measured using ELISA and compared between treatment periods.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Serum Sclerostin
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in serum sclerostin concentrations during treatment with medium cut-off and high-flux hemodialysis membranes. Serum sclerostin levels will be measured using ELISA and compared between treatment periods.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in Kidney Disease Quality of Life-36 (KDQOL-36) Score
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Evaluation of patient-reported quality of life using the KDQOL-36 questionnaire.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in UP-Dial Pruritus Score
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Evaluation of pruritus severity using the Uraemic Pruritus in Dialysis Patients (UP-Dial) scale. The UP-Dial total score ranges from 0 to 56, with higher scores indicating more severe pruritus and a worse outcome.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Short-Form McGill Pain Questionnaire (SF-MPQ) Score
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Evaluation of pain using the Short-Form McGill Pain Questionnaire (SF-MPQ) total Pain Rating Index score. The SF-MPQ total Pain Rating Index score is calculated from 15 pain descriptors, each scored from 0 to 3, resulting in a total score range of 0 to 45. Higher scores indicate greater pain severity and a worse outcome.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Overhydration (OH)
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Assessment of overhydration (OH, L) measured using the Body Composition Monitor (BCM).
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Extracellular Water to Total Body Water Ratio (ECW/TBW)
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Assessment of the extracellular water to total body water ratio (ECW/TBW) using the Body Composition Monitor (BCM).
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Intracellular Water (ICW)
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Assessment of intracellular water (ICW, L) using the Body Composition Monitor (BCM).
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Lean Tissue Index (LTI)
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Assessment of lean tissue index (LTI, kg/m²) using the Body Composition Monitor (BCM).
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Body Cell Mass (BCM)
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Assessment of body cell mass (BCM, kg) using the Body Composition Monitor.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Pulse Wave Velocity (PWV) Measured in m/s
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Pulse wave velocity (PWV) will be measured in meters per second (m/s) as a single parameter of arterial stiffness. Change in PWV from baseline to Month 3 and Month 6 will be compared between medium cut-off and high-flux hemodialysis membrane treatment periods.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Change in Handgrip Strength Measured by Hand Dynamometer
Lasso di tempo: At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)
Handgrip strength will be measured in kilograms (kg) using a hand dynamometer. The same prespecified measurement method will be used at each study visit. Change in handgrip strength from baseline to Month 3 and Month 6 will be compared between medium cut-off and high-flux hemodialysis membrane treatment periods.
At baseline (July 2026), Month 3 (October 2026), and Month 6 (January 2027)

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Collaboratori

Pubblicazioni e link utili

La persona responsabile dell'inserimento delle informazioni sullo studio fornisce volontariamente queste pubblicazioni. Questi possono riguardare qualsiasi cosa relativa allo studio.

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

1 luglio 2026

Completamento primario (Stimato)

1 gennaio 2027

Completamento dello studio (Stimato)

1 gennaio 2027

Date di iscrizione allo studio

Primo inviato

24 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

30 giugno 2026

Primo Inserito (Effettivo)

6 luglio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

14 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

9 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

Individual participant data (IPD) are not planned to be shared publicly. The study involves a limited number of participants from a single center, and data will be retained and managed in accordance with institutional policies, ethical requirements, and applicable data protection regulations.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .