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Title: Maintenance of elevated versus physiological iron indices in non-anaemic patients with chronic kidney disease: a randomized controlled trial
Authors: Roger, Simon D ;McMahon, L.P.;Kent, A.B.;Kerr, Peter ;Healy, H.;Irish, A.B.;Cooper, B.;Kark, A.
Issue Date: Mar-2010
Source: Volume 25, Issue 3, pp. 920 - 926
Journal title: Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association
Abstract: BACKGROUND: An optimal haemoglobin (Hb) response to erythropoietin requires elevated iron indices in dialysis patients; however, it is unknown if the same applies in chronic kidney disease (CKD). METHODS: One hundred patients [CKD Stages 3-5, Hb >or= 110 g/L, iron replete, erythropoietin-stimulating agent (ESA)-naive, 47% diabetic, median age 69.5 years] were block-randomized in an open-label study to receive up to 200 mg intravenous iron sucrose (Group A, n = 52) bimonthly or oral iron sulphate (Group B) to maintain raised and normal iron indices (respectively) over 12 months. The primary endpoint was the change in Hb concentration at 12 months or at termination after at least 6 months of treatment. RESULTS: Eighty-five patients reached the primary endpoint (43, Group A; 42, Group B). Initial Hb was 119 +/- 7 vs 116 +/- 12 g/L (mean +/- standard deviation); ferritin 122 (71-176), median (inter-quartile range), vs 90 microg/L (58-150); transferrin saturation (TSat) 22 (18-26) vs 21% (15-24); and creatinine 240 (195-313) vs 230 micromol/L (184-352). Ferritin and TSat differed by month 2 [157 (103-220) vs 96 microg/L (73-162), P = 0.003] and month 6 [25 (20-31) vs 21% (17-27), P = 0.02], respectively. At study end, Hb did not differ between groups (121 +/- 10 vs 117 +/- 13 g/L). Ferritin was 362 (310-458) vs 125 microg/L (84-190), P < 0.001; TSat 30 (23-34) vs 21% (18-24), P < 0.001; and creatinine 229 (188-326) vs 272 micromol/L (195-413), P = NS. For patients (Groups A and B, n = 27 in each group) whose creatinine regression slope increased (indicating worsening function), the fall in Hb over 12 months also did not differ between groups despite adequate separation in iron indices. Serious adverse events overall did not differ between groups. CONCLUSIONS: Elevated iron indices did not increase Hb synthesis in ESA-naive, iron replete, pre-dialysis patients with Hb >110 g/L.
DOI: 10.1093/ndt/gfp584
ISSN: 1460-2385
Publicaton type: Journal Article
Keywords: Kidney Disease
Appears in Collections:Renal Medicine

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