title: Prolonged renal failure secondary to antithymocyte globulin treatment in severe aplastic anemia.
abstract: OBJECTIVE
  To report a case of acute renal failure in a patient with severe aplastic anemia after administration of antithymocyte globulin (ATG).
  
  
  METHODS
  A 41-year-old man diagnosed with severe aplastic anemia was treated with ATG and cyclosporine. After one dose of ATG (3012 mg, 40 mg/kg), the patient developed anuric acute renal failure, with serum creatinine 3.4 mg/dL (1.2 mg/dL at baseline) and blood urea nitrogen (BUN) 29 mg/dL (13 mg/dL at baseline), which required intermittent hemodialysis. Renal failure resolved with cessation of the drug, serum creatinine and BUN returned to baseline levels, and the patient no longer required hemodialysis.
  
  
  CONCLUSIONS
  ATG is a purified and concentrated gamma globulin, primarily a monomeric immunoglobulin G from hyperimmune serum of horses. It is widely used to treat severe aplastic anemia and to manage acute transplant rejection. This patient had no other confounding factors for the cause of the renal failure. An objective causality assessment using the Naranjo probability scale suggested that ATG was the probable cause of the acute renal failure. Primary glomerular disease was not excluded, as a renal biopsy was not performed.
  
  
  CONCLUSIONS
  The association between renal injury and administration of ATG remains unclear; therefore, we recommend that renal function be assessed and carefully monitored prior to and after administration of ATG.
authors.affiliation: Division of Renal Diseases and Hypertension, The University of Texas Medical School at Houston, Houston, TX 77030, USA.
authors.forename: Ruchdi K
authors.initials: RK
authors.lastname: Barakat
authors.forename: Johann P
authors.initials: JP
authors.lastname: Schmolck
authors.forename: Kevin W
authors.initials: KW
authors.lastname: Finkel
authors.forename: John R
authors.initials: JR
authors.lastname: Foringer
mesh_terms: D058186:Acute Kidney Injury / Q000139:chemically induced* / Q000150:complications / Q000628:therapy; D000328:Adult; D000741:Anemia, Aplastic / Q000097:blood / Q000188:drug therapy*; D000961:Antilymphocyte Serum / Q000009:adverse effects* / Q000627:therapeutic use; D001002:Anuria / Q000097:blood / Q000209:etiology / Q000628:therapy; D001806:Blood Urea Nitrogen; D003404:Creatinine / Q000097:blood; D016572:Cyclosporine / Q000627:therapeutic use; D006801:Humans; D007166:Immunosuppressive Agents / Q000009:adverse effects* / Q000627:therapeutic use; D008297:Male; D006435:Renal Dialysis
chemical_list: D000961:Antilymphocyte Serum; D007166:Immunosuppressive Agents; D016572:Cyclosporine; D003404:Creatinine