APPENDIX 2 Erythropoiesis Stimulating Agents Medication Use Guideline for the Treatment of Anemia in Malignant Disease Purpose of Guidelines: Provide guidance for the use of erythropoiesis stimulating agents, epoetin alfa (Procrit®) and darbepoetin alfa (Aranesp®), in malignant disease for the Froedtert Health System. Background: Erythropoiesis stimulating agents (ESA), epoetin alfa (Procrit®) and darbepoetin alfa (Aranesp®), reduce blood transfusions and increase hemoglobin (Hb) levels in anemic patients. ESAs are FDA approved for the treatment of anemia in patients with non-myeloid malignancies, where anemia is due to concomitantly administered chemotherapy.1-3 Although ESAs are not FDA approved for the treatment of anemia in low grade MDS patients, these agents are often used as indicated in the National Comprehensive Cancer Network (NCCN) guidelines.6-8 1. Pharmacology:1 a. Epoetin alfa (Procrit®) binds to erythropoietin receptors on bone marrow cells and stimulates proliferation of erythroid colony forming units and blast forming units. This results in red blood cell production, division, and differentiation, which reduces blood transfusions and increases hemoglobin levels in anemic patients. b. Darbepoetin alfa (Aranesp®) shares a similar mechanism of action to epoetin alfa, but has an additional sialic acid which prolongs the half-life two to three times longer than epoetin alfa. Froedtert Health PNT Committee Approved Uses in Malignant Disease: 1. Epoetin alfa:2,3 a. Treatment of anemia in patients with non-myeloid malignancies, where anemia is due to concomitantly administered chemotherapy, chemotherapy induced anemia (CIA) b. Treatment of anemia related to symptomatic low grade myelodysplastic syndrome (MDS) Froedtert Health PNT Committee Unapproved Uses: 1. Darbepoetin alfa should be reserved for patients who do not tolerate epoetin alfa or who were previously receiving darbepoetin alfa; darbepoetin alfa is restricted to an outpatient setting only. 2 DOSING LEVEL CHART Dose Level A Epoetin Alfa (preferred agent) 60,000 Units SC weekly Darbepoetin Alfa No dose adjustment; maintain Dose Level C B 50,000 Units SC weekly No dose adjustment; maintain Dose Level C C 40,000 Units SC weekly 500 mcg SC q 3 weeks D 30,000 Units SC weekly 300 mcg SC q 3 weeks E 20,000 Units SC weekly 200 mcg SC q 3 weeks The ESA dose should not be increased more frequently than every four weeks; doses may be decreased more frequently ESA Dosing for CIA Dose Level C Initial Dose Maintain current dose Hb < 10 g/dL –AND– rise in Hb ≥ 1 g/dL 4 weeks post last dose change Increase one dose level Hb < 10 g/dL –AND– rise in Hb < 1 g/dL 4 weeks post last dose change Decrease one dose level Hb < 10 g/dL –AND– rise in Hb > 1 g/dL 2 weeks post last dose change Hold dose; restart one dosing level below Hb ≥ 10 g/dL previous dose Discontinue therapy Hb rise < 2 g/dL after 8 weeks ESA should not be administered 8 weeks past final dose of chemotherapy ESA Dosing for Low Grade MDS Initial Dose Hb < 12 g/dL –AND– rise in Hb ≥ 1 g/dL 4 weeks post last dose change Hb < 12 g/dL –AND– rise in Hb < 1 g/dL 4 weeks post last dose change Hb < 12 g/dL –AND– rise in Hb > 1 g/dL 2 weeks post last dose change Hb ≥ 12 g/dL Dose Level C Maintain current dose Increase one dose level Decrease one dose level Hold dose; restart one dosing level below previous dose Discontinue therapy Hb rise < 2 g/dL after 8 weeks The provider must be contacted to approve a higher dosing schema for MDS patients that require a dose above Dose Level A