Anemia Clinical Trial
Official title:
Impact of Ferric Citrate vs Ferrous Sulfate on Iron Parameters and Hemoglobin in Individuals With Moderate to Severe Chronic Kidney Disease (CKD) With Iron Deficiency
The main objective of the study is to compare the impact of oral ferric citrate compared to standard of care oral ferrous sulfate on serum iron, percent transferrin saturation, ferritin, hepcidin and hemoglobin levels in individuals with moderate to severe chronic kidney disease (CKD) and absolute iron deficiency.
Ferric citrate is an FDA-approved oral phosphorus binder that has been shown to be effective in reducing serum phosphorus and fibroblast growth factor 23 (FGF23) concentrations and increasing iron stores and hemoglobin in individuals with non-dialysis-dependent CKD who have iron-deficiency anemia. This may prove to be advantageous in individuals with pre-dialysis CKD who require iron supplementation for iron-deficiency anemia. This is because ferric citrate may not only restore iron stores in individuals who are iron deficient, but by lowering FGF23 concentrations, ferric citrate may increase local and systemic concentrations of 1,25-dihydroxyvitamin D, a powerful inhibitor of hepcidin synthesis, potentially attenuating the increase in hepcidin following oral iron supplementation. When compared to standard iron supplementation therapies (e.g., oral ferrous sulfate) that powerfully stimulate hepcidin secretion, this may then allow for greater iron bioavailability by increasing iron absorption in the gut while also reducing the degree of iron sequestration in reticuloendothelial system stores. However, little is known about the comparative effectiveness of treatment with oral ferric citrate vs. oral ferrous sulfate (currently the standard of care) in increasing iron stores and hemoglobin in iron-deficient CKD patients. If ferric citrate is shown to not only improve overall iron status, but also partially mitigate the long-term effects of iron supplementation on hepcidin secretion by increasing endogenously produced 1,25-dihydroxyvitamin D, this may indicate that ferric citrate can provide superior short- and long-term effects on iron-restricted erythropoiesis in CKD as compared to the current standard of care. The main objectives of the study are to compare the impact of ferric citrate compared to standard of care ferrous sulfate on serum iron, percent transferrin saturation (TSAT), ferritin, hemoglobin and hepcidin concentrations in individuals with moderate to severe CKD and absolute iron deficiency. ;
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