Today it is well established that middle molecules comprise several compounds that are not effectively removed by high-flux dialyzers, and effective clearance of large middle molecules in the process of dialysis depends on the dialyzer membrane having large enough pore sizes, larger than the conventional high-flux dialyzers. Studies have found associations between levels of large middle molecule uremic toxins and immune dysfunction and inflammation, as well as adverse outcomes. This indicates that dialysis membranes having larger pores, enabling an expanded HD (HDx) with more effective removal of large middle molecules, can have a positive impact on the inflammatory state. While data is starting to appear on the long-term use of the HDx therapy, little is still known on how large middle molecules and inflammation markers are affected over time.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
43
The patients randomized in this group using the Theranova 500 medium cut-off dialyzer, and blood flow rate and treatment duration will be maintained stable during the observation period. However, other prescriptions will vary based on the Principal Investigator's (PI's) judgment. If other dialyzers need to be temporarily used during the study period it shall be recorded which alternative dialyzers are used and for how long the study patient is on a different dialyzer. However, prior to Week 12 laboratory assessment it is recommended that the patient undergoes three dialysis sessions on the designated treatment mode.
The patients randomized in this group using the on-line high-flux HDF dialyzer, in post dilution mode, will continue to receive treatments according to their current treatment prescriptions for the duration of the study.
RTS Murcia VII, RTS Servicios de Diálisis S.L.U.
Murcia, Spain
Reduction ratios of lambda immunoglobulin free light chains (λ-FLC)
Time frame: Week 12
Reduction ratios of kappa immunoglobulin free light chains (k-FLC)
Time frame: Week 12
Reduction ratios of chitinase-3-like protein 1 (YKL-40)
Time frame: Week 12
Reduction ratios of fibroblast growth factor 23 (FGF-23)
Time frame: Week 12
Reduction ratios of serum beta-2 microglobulin (β2M)
Time frame: Week 12
Change from baseline in mid-week pre-dialysis serum levels of λ-FLC, κ-FLC, YKL-40, FGF-23, ß2M
Time frame: Week 12 and 24
Change from baseline in mid-week pre-dialysis serum levels of pentraxin-3 (PTX-3), high sensitivity C-reactive protein (hs-CRP), interleukin (IL-6), and interleukin-10 (IL-10)
Time frame: Week 12 and 24
Percent change from pre- to post-dialysis in mid-week serum levels of hs-CRP
Time frame: Week 12
Percent change from pre- to post-dialysis in mid-week serum levels of PTX-3
Time frame: Week 12
Percent change from pre- to post-dialysis in mid-week serum levels of IL-6
Time frame: Week 12
Percent change from pre- to post-dialysis in mid-week serum levels of IL-10
Time frame: Week 12
Change from baseline in mid-week pre-dialysis serum level of fibrinogen
Time frame: Week 12 and 24
Change from baseline in mid-week pre-dialysis serum level of albumin
Time frame: Week 12 and 24
Single pool Kt/Vurea
Time frame: Week 24
Serum phosphorous
Time frame: Week 24
Kidney Disease Quality of Life 36 (KDQOL-36)
Time frame: Baseline, Week 12, Week 24
Dialysis Symptom Index (DSI)
Time frame: Baseline, Week 12, Week 24
Serum ferritin
Time frame: Baseline, Week 12, Week 24
Transferrin Saturation (TSAT)
Time frame: Baseline, Week 12, Week 24
24-hour urine output on monthly basis
Time frame: Month 1, Month 2, Month 3, Month 4, Month 5, Month 6
Erythropoiesis stimulating agent (ESA) responsiveness
Time frame: Baseline, Week 4, Week 8, Week 12, Week 16, Week 20, Week 24
Hemoglobin levels
Time frame: Baseline, Week 4, Week 8, Week 12, Week 16, Week 20, Week 24
ESA dosage by type, administration frequency, and route
Time frame: Baseline, Week 4, Week 8, Week 12, Week 16, Week 20, Week 24
Intravenous iron dosage
Time frame: Baseline, Week 4, Week 8, Week 12, Week 16, Week 20, Week 24
Number of adverse events of hospitalization, cardiovascular events, and infective episodes
Time frame: Week 1 through Week 24
Total patient death
Time frame: Week 1 through Week 24
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