I et studie med hæmodialysepatienter, der blev behandlet med epoetin alfa i tre år, var forekomsten af knoglemarvsfibrose ikke højere end hos kontrolgruppens dialysepatienter, der ikke blev behandlet med epoetin alfa.
The incidence of bone marrow fibrosis was not increased in a study of haemodialysis patients who were treated with epoetin alfa for 3 years compared to a matched control group of dialysis patients who had not been treated with epoetin alfa.).