Amgen Announces Top-Line Results of Trial to Reduce Cardiovascular Events With Aranesp(R) Therapy (TREAT) in CKD Patients With Type-...(resident of Research and Development at ...),Health

Date:8/25/2009

resident of Research and Development at Amgen. "In contrast to a recent, smaller study of ESAs in a similar patient population, TREAT did not show a statistically significant adverse effect on all-cause mortality or cardiovascular morbidity when patients were treated to a hemoglobin target of 13 g/dL. We continue to believe that ESAs have a favorable benefit:risk profile when used according to the approved label."

Currently, Aranesp is indicated for the treatment of anemia in patients with chronic renal failure (CRF), including patients on dialysis and patients not on dialysis. The approved label for Aranesp recommends individualizing dosing to achieve and maintain hemoglobin levels within the range of 10 to 12 g/dL. TREAT studied uses for Aranesp in which it is not approved.

TREAT Study Design

TREAT was an international, Phase 3, randomized, double-blind, placebo-controlled study of 4,038 chronic kidney disease (CKD) patients with type-2 diabetes and anemia. It is the largest study of ESA use in CKD patients to date. Patients enrolled in the study were randomized in a one-to-one ratio to receive either treatment with Aranesp to a target hemoglobin of 13 g/dL or placebo. Due to the increased risk of negative outcomes associated with low hemoglobin levels, patients in the control arm whose hemoglobin fell below 9 g/dL were given Aranesp until their hemoglobin level was 9 g/dL. Investigators were blinded to this intervention.

TREAT had two primary endpoints. The first evaluated time to all-cause mortality or cardiovascular morbidity including heart attack (myocardial infarction), congestive heart failure, hospitalization for angina (myocardial ischemia), or stroke (cerebrovascular accident). The second primary endpoint evaluated time to all-cause mortality or chronic dialysis. TREAT was not designed to determine the appropriate hemoglobin target in this patient population.

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