Solidly Positive Phase III Data Boost Keryx’ Struggling Iron Drug Auryxia

Keryx set to pursue expanded FDA labeling of its phosphate binder Auryxia to pre-dialysis patients with iron deficiency, a patient population already approved for treatment in Europe.

Keryx Biopharmaceuticals Inc. is looking to submit a supplemental NDA in the third quarter for its oral phosphate binder Auryxia (ferric citrate) for an earlier line of treatment – pre-dialysis kidney disease patients with iron deficiency anemia – after reporting positive top-line Phase III results on March 29.

The non-calcium-based phosphate binder was approved in September 2015 for controlling serum phosphate levels, or hypophosphatemia, in patients with chronic...

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