Keryx Biopharmaceuticals, Inc. has announced the initiation of a Phase 2 study of Zerenex (ferric citrate), an ferric iron-based phosphate binder drug candidate, in managing serum phosphorus and iron deficiency in anemic patients with Stage 3 to 5 non-dialysis dependent chronic kidney disease ("NDD-CKD").
In the United States alone, over one and a half million people suffering from Stages 3 to 5 NDD-CKD have iron deficiency anemia, however, there are currently no oral iron supplements with an FDA label in NDD-CKD. Also, there are currently no FDA approved phosphate binders in NDD-CKD.