Keryx Biopharm (KERX) Completes Patient Enrollment in Zerenex Phase 3 Long-Term Study
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Keryx Biopharmaceuticals (Nasdaq: KERX) today announced completion of patient enrollment in the long-term study component of its Phase 3 registration program of Zerenex™, the Company's ferric iron-based phosphate binder for the treatment of elevated serum phosphorus levels, or hyperphosphatemia, in patients with end-stage renal disease (ESRD) on dialysis.
The Zerenex Phase 3 registration program, which is being conducted pursuant to a Special Protocol Assessment (SPA) with the Food and Drug Administration (FDA), is comprised of an already successfully-completed Phase 3 short-term study, and this ongoing Phase 3 long-term study.
This Phase 3 long-term study is a multicenter, randomized, open-label, safety and efficacy clinical trial in over 400 ESRD patients on hemodialysis or peritoneal dialysis. The study consists of a 2-week washout period followed by a 52-week safety assessment in which patients are randomized 2:1 to receive either Zerenex or an active control.
The 52-week safety assessment period is followed by a 4-week efficacy assessment. During the 4-week efficacy assessment, only those patients randomized to treatment with Zerenex during the safety assessment period will be randomized in a 1:1 ratio to either continue treatment with Zerenex or to be switched to placebo for a 4-week period.
The Zerenex Phase 3 registration program, which is being conducted pursuant to a Special Protocol Assessment (SPA) with the Food and Drug Administration (FDA), is comprised of an already successfully-completed Phase 3 short-term study, and this ongoing Phase 3 long-term study.
This Phase 3 long-term study is a multicenter, randomized, open-label, safety and efficacy clinical trial in over 400 ESRD patients on hemodialysis or peritoneal dialysis. The study consists of a 2-week washout period followed by a 52-week safety assessment in which patients are randomized 2:1 to receive either Zerenex or an active control.
The 52-week safety assessment period is followed by a 4-week efficacy assessment. During the 4-week efficacy assessment, only those patients randomized to treatment with Zerenex during the safety assessment period will be randomized in a 1:1 ratio to either continue treatment with Zerenex or to be switched to placebo for a 4-week period.
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