Clinical trial NCT02273570: Optimal Anemia Treatment in End Stage Renal Disease (ERSD)
Official title: Single-center, Open-label, Randomized Study of Anemia Management Improvement in End Stage Renal Disease (ESRD) Patients With Secondary Hyperparathyroidism
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Hyperparathyroidism, Secondary
Keywords: Hyperparathyroidism, Secondary
Anemia
Vascular Stiffness
Vascular Calcification
Lead sponsor: Azienda Ospedaliera Sant'Anna
Sponsor class: OTHER
Collaborators: name: Amgen
First posted: 2014-10-24
Enrollment: 50
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: SUPPORTIVE_CARE

Brief summary: Clinical study aimed at improving anemia management in End Stage Renal Disease Patient (ESRD) on maintenance Hemodialysis with evidence of Chronic Kidney disease Mineral Bone Disorder (CKD-MBD)

Detailed description: Anemia is one of the most worrisome complications of Chronic Kidney Disease (CKD). Numerous prospective studies have repeatedly documented an increase risk of morbidity and mortality associated with lower levels of hemoglobin (Hb). Hence the international guidelines on patient care suggest the use of Erythropoietin Stimulating Agents (ESA), iron, folates supplementation for anemia correction.

However, recent randomized controlled trials (RCT) have demonstrated that hemoglobin correction to normal levels increases the risk of major cardiovascular (CV) events. Though, the reasons are still unclear, the cumulative ESA dose may at least partly explain these findings suggesting limiting ESA to the minimal dose allowed to achieve the suggested Hb targets in ESRD patients.

Among other factors, CKD-MBD has been repeatedly associated with poor more severe anemia and higher dose of ESA. However, the latest Kidney Disease: Improving Global Outcomes (KDIGO) guidelines on CKD-MBD management suggest a higher reference target for intact parathyroid hormone (iPTH) (2-9 fold the upper level of the normal range) when compared to the National Kidney Foundation (NKF) guidelines published in 2003 (150-300 pg/ml).

A few observational studies suggest a linear inverse association between intact iPTH and ESA dose even for iPTH value within the iPTH target level proposed by the KDIGO working group. Similarly, a large body of evidence supports the notion that the higher the iPTH the faster the CV system deterioration in ESRD.

Aim of the study is to test whether a tighter iPTH control to achieve a iPTH level lower than 300 pg/ml vs iPTH levels between 300-540 pg/ml is associated with a ESA dose reduction and a slower CV system deterioration in ESRD patients receiving dialysis.

STUDY DESIGN Pilot, single center, open label with blinded end point (PROBE-Prospective Randomized Open Blinded End-Point) aimed at improving patient care.

Eligible patients will be randomized (1:1) to either:

(A) Control group: standard care. The iPTH target in this group is 300-540 pg/ml (B) Optimal CKD-MBD control: in this group the iPTH target is150-300 pg/ml to be achieved with a therapeutic algorithm.

TREATMENTS

All patients will be randomized (1:1) to either:

(A) Control group: standard care. The iPTH target in this group is 300-540 pg/ml.

(B) Optimal CKD-MBD control:: in this group the iPTH target is 150-300 pg/ml to be achieved with a therapeutic algorithm:

I. iPTH control: in order to achieve the iPTH target (150-300 pg/ml), all patients will receive 400 IU/day of vitamin-25-OH-D (25OHD) and a flexible dose of any active vitamin D available in Italy (calcitriol and paricalcitol-"Zemplar®") at the maximum dose of 6 mcg/week of paricalcitol("Zemplar®")of equivalent (see existing conversion table). Patients will also receive a flexible dose of cinacalcet("Mimpara®") to a maximum dose of 90 mg/day.

II. Phosphorous control: all patients need to achieve a serum phosphorous level lower than 5.5 mg/dl. All available phosphate binders are allowed \[sevelamer("Renvela®"), calcium carbonate, calcium acetate("Phoslo®"), calcium acetate/magnesium carbonate ("Osvaren®"), lanthanum carbonate "Foznol®"). A rescue therapy with aluminum("Maalox®") is allowed for no more than 30 days.

III. Serum calcium control: the suggested target is less than 9.5 mg/dl. In case of serum calcium greater than 9.5 mg/dl the calcium and vitamin D dose should be lowered in order to lower the risk of vascular calcification deposition and progression

Eligibility criteria: INCLUSION CRITERIA.

* Men and women
* Age \>18 years
* Maintenance dialysis via Artero-Venous fistula
* ESA use
* iPTH between 300-600 pg/ml
* Hb between 10.0-11.5
* Kt/V greater/equal than 1.2
* Signed informed consent prior to the initiation of the study

EXCLUSION CRITERIA: None.

Primary outcomes:
measure: percent reduction in weekly ESA consumption to maintain Hb levels within the recommended range 10.0-11.5 g/dl
timeFrame: baseline and after 12 months of followup
Secondary outcomes:
measure: Change in iron status and storage.
timeFrame: baseline and after 12 months of followup
measure: Difference in prevalence of cardiac valvular calcification progression detected by echocardiography between groups.
timeFrame: baseline and after 12 months of followup
measure: Difference in pulse wave velocity assessed by applanation tonometry between groups.
timeFrame: baseline and after 12 months of followup
measure: CKD-MBD control
timeFrame: baseline and after 12 months of followup
Other outcomes:
Locations:
city: San Fermo della battaglia (CO)
country: Italy
facility: Azienda Ospedaliera Sant'Anna
Study officials:
affiliation: Azienda Ospedaliera Sant'Anna, Ospedale Sant'Anna-Como
name: Antonio Bellasi, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Capuano A, Serio V, Pota A, Memoli B, Andreucci VE. Beneficial effects of better control of secondary hyperparathyroidism with paricalcitol in chronic dialysis patients. J Nephrol. 2009 Jan-Feb;22(1):59-68.
citation: Ebben JP, Gilbertson DT, Foley RN, Collins AJ. Hemoglobin level variability: associations with comorbidity, intercurrent events, and hospitalizations. Clin J Am Soc Nephrol. 2006 Nov;1(6):1205-10. doi: 10.2215/CJN.01110306. Epub 2006 Sep 6.
citation: Fishbane S, Berns JS. Hemoglobin cycling in hemodialysis patients treated with recombinant human erythropoietin. Kidney Int. 2005 Sep;68(3):1337-43. doi: 10.1111/j.1523-1755.2005.00532.x.
citation: Gilbertson DT, Ebben JP, Foley RN, Weinhandl ED, Bradbury BD, Collins AJ. Hemoglobin level variability: associations with mortality. Clin J Am Soc Nephrol. 2008 Jan;3(1):133-8. doi: 10.2215/CJN.01610407. Epub 2007 Nov 28.
citation: Lacson E Jr, Ofsthun N, Lazarus JM. Effect of variability in anemia management on hemoglobin outcomes in ESRD. Am J Kidney Dis. 2003 Jan;41(1):111-24. doi: 10.1053/ajkd.2003.50030.
citation: Pisoni RL, Bragg-Gresham JL, Young EW, Akizawa T, Asano Y, Locatelli F, Bommer J, Cruz JM, Kerr PG, Mendelssohn DC, Held PJ, Port FK. Anemia management and outcomes from 12 countries in the Dialysis Outcomes and Practice Patterns Study (DOPPS). Am J Kidney Dis. 2004 Jul;44(1):94-111. doi: 10.1053/j.ajkd.2004.03.023.
citation: Kidney Disease: Improving Global Outcomes (KDIGO) CKD-MBD Work Group. KDIGO clinical practice guideline for the diagnosis, evaluation, prevention, and treatment of Chronic Kidney Disease-Mineral and Bone Disorder (CKD-MBD). Kidney Int Suppl. 2009 Aug;(113):S1-130. doi: 10.1038/ki.2009.188.
citation: National Kidney Foundation. K/DOQI clinical practice guidelines for bone metabolism and disease in chronic kidney disease. Am J Kidney Dis. 2003 Oct;42(4 Suppl 3):S1-201. No abstract available.