These summary results will be followed by full efficacy and safety analyses, which will be shared with global regulatory authorities and presented at an upcoming medical meeting later this year.
"TREAT was designed to answer important questions about the effects of erythropoiesis-stimulating agents (ESAs) on cardiovascular and renal outcomes in patients with renal insufficiency and type-2 diabetes. It is by any measure the most comprehensive analysis that has ever been performed to examine the impact of anemia therapy in patients who do not yet require dialysis. The trial will provide nephrologists with important information as they endeavor to improve renal care," said
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.
For patients randomized to the Aranesp group, the starting dose was 0.75 mcg/kg administered subcutaneously every two weeks; subsequent doses were titrated to achieve hemoglobin target of 13.0 g/dL. Once the target hemoglobin was reached, the frequency of administration was extended to once-monthly.
Chronic Kidney Disease: Impact and Prevalence
CKD affects more than 26 million Americans and millions more worldwide. The disease is characterized by progressive kidney damage and impaired kidney function and is most often caused by type-2 diabetes or high blood pressure. When CKD progresses to kidney failure, chronic dialysis or a kidney transplant are required to sustain life. Approximately 350,000 people in
Aranesp was approved by the
In 2002, the
Important Aranesp Safety Information
WARNINGS: INCREASED MORTALITY, SERIOUS CARDIOVASCULAR and THROMBOEMBOLIC EVENTS, and TUMOR PROGRESSION
Renal failure: Patients experienced greater risks for death and serious cardiovascular events when administered erythropoiesis-stimulating agents (ESAs) to target higher versus lower hemoglobin levels (13.5 vs. 11.3 g/dL; 14 vs. 10 g/dL) in two clinical studies. Individualize dosing to achieve and maintain hemoglobin levels within the range of 10 to 12 g/dL.
-- ESAs shortened overall survival and/or time-to-tumor progression in clinical studies in patients with breast, non-small cell lung, head and neck, lymphoid, and cervical cancers when dosed to target a hemoglobin of greater than or equal to 12 g/dL.
-- To minimize these risks, as well as the risk of serious cardio- and thrombovascular events, use the lowest dose needed to avoid red blood cell transfusions.
-- Use only for treatment of anemia due to concomitant myelosuppressive chemotherapy.
-- ESAs are not indicated for patients receiving myelosuppressive therapy when the anticipated outcome is cure. (This information is specific to the U.S. prescribing information)
-- Discontinue following the completion of a chemotherapy course.
Aranesp is contraindicated in patients with uncontrolled hypertension.
All patients, including patients with cancer or chronic kidney failure:
-- You may get serious heart problems such as heart attack, stroke, heart failure, and may die sooner if you are treated with Aranesp to a hemoglobin level above 12 g/dL.
-- You may get blood clots at any time while taking Aranesp. If you are receiving Aranesp and you are going to have surgery, talk to your healthcare provider about whether or not you need to take a blood thinner to lessen the chance of blood clots during or following surgery. Clots can form in blood vessels (veins), especially in your leg (deep venous thrombosis or DVT). Pieces of a blood clot may travel to the lungs and block the blood circulation in the lungs (pulmonary embolus).
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