Ferric carboxymaltose in patients with iron-deficiency anemia and impaired renal function: The REPAIR-IDA trial

Jane E. Onken, David B. Bregman, Robert A. Harrington, David Morris, John Buerkert, Douglas Hamerski, Hussain Iftikhar, Roberto Mangoo-Karim, Edouard R. Martin, Carlos O. Martinez, George Edward Newman, Wajeh Y. Qunibi, Dennis L. Ross, Bhupinder Singh, Mark T. Smith, Angelia Butcher, Todd A. Koch, Lawrence T. Goodnough

Research output: Contribution to journalArticlepeer-review

96 Scopus citations


BackgroundIron-deficiency anemia in non-dialysis-dependent chronic kidney disease (NDD-CKD) frequently requires parenteral iron replacement, but existing therapies often require multiple administrations. We evaluated the efficacy and cardiovascular safety of ferric carboxymaltose (FCM), a non-dextran parenteral iron permitting large single-dose infusions, versus iron sucrose in patients with iron-deficiency anemia and NDD-CKD.MethodsA total of 2584 participants were randomized to two doses of FCM 750 mg in one week, or iron sucrose 200 mg administered in up to five infusions in 14 days. The primary efficacy endpoint was the mean change to highest hemoglobin from baseline to Day 56. The primary composite safety endpoint included all-cause mortality, nonfatal myocardial infarction, nonfatal stroke, unstable angina, congestive heart failure, arrhythmias and hyper- and hypotensive events.ResultsThe mean hemoglobin increase was 1.13 g/dL in the FCM group and 0.92 g/dL in the iron sucrose group (95% CI, 0.13-0.28). Similar results were observed across all subgroups, except Stage 2 CKD. More subjects in the FCM group achieved a hemoglobin increase of ≥1.0 g/dL between baseline and Day 56 (48.6 versus 41.0%; 95% CI, 3.6-11.6%). There was no significant difference between FCM and iron sucrose recipients with respect to the primary composite safety endpoint, including the major adverse cardiac events of death, myocardial infarction, or stroke. A significant difference in the number of protocol-defined, predominantly transient hypertensive episodes was observed in the FCM group.ConclusionsTwo 750-mg infusions of FCM are a safe and effective alternative to multiple lower dose iron sucrose infusions in NDD-CKD patients with iron-deficiency anemia.

Original languageEnglish (US)
Pages (from-to)833-842
Number of pages10
JournalNephrology Dialysis Transplantation
Issue number4
StatePublished - Apr 2014


  • anemia
  • chronic
  • iron repletion
  • iron-deficiency
  • renal insufficiency

ASJC Scopus subject areas

  • Nephrology
  • Transplantation


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