title: The use of cardiac biomarkers in detection of cardiotoxicity associated with conventional and high-dose chemotherapy for acute leukemia.
abstract: OBJECTIVE
  Monitoring of cardiotoxicity of conventional and high-dose chemotherapy (HD-CT) with multiple biomarkers of cardiac injury - glycogen phosphorylase BB (GPBB), heart-type fatty acid binding protein (H-FABP), cardiac troponins (cTnT, cTnI), creatine kinase MB (CK-MB mass), myoglobin.
  
  
  METHODS
  A total of 47 adult acute leukemia patients were studied - 24 patients treated with conventional CT containing anthracyclines (ANT) and 23 patients treated with HD-CT (myeloablative preparative regimen) followed by hematopoietic cell transplantation (HCT). Cardiac biomarkers were assessed prior to treatment (before CT/HD-CT), after first CT with ANT, after last CT with ANT in the first group, after HD-CT and after HCT in the second group. Values above the reference range were considered elevated.
  
  
  RESULTS
  Before CT/HD-CT, all biomarkers of cardiac injury were below the cut-offs in all patients. GPBB increased above the cut-off (7.30 microg/L) in 4 (16.7%) patients after first CT and in 5 (20.8%) patients after last CT with ANT. GPBB increased above the cut-off in 5 (21.7%) patients after HD-CT and remained elevated in 5 (21.7%) patients after HCT. CTnI became elevated (above 0.40 microg/L) in 2 (8.3%) patients after first and last CT with ANT. Both patients with cTnI positivity had elevated GPBB. Other tested biomarkers remained below the cut-offs during the study.
  
  
  CONCLUSIONS
  Our results suggest that GPBB could become a sensitive biomarker for detection of acute cardiotoxicity associated with conventional CT containing ANT and HD-CT followed by HCT. The predictive value for development of cardiomyopathy in the future is not known and should be evaluated during a prospective follow-up. Based on our data, a larger prospective and multicenter study would be most desirable to define the potential role of new circulating biomarkers in the assessment of cardiotoxicity in oncology.
authors.affiliation: Department of Medicine II - Clinical Hematology, University Hospital and Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic. jan.hor@post.cz
authors.forename: J M
authors.initials: JM
authors.lastname: Horacek
authors.forename: M
authors.initials: M
authors.lastname: Vasatova
authors.forename: M
authors.initials: M
authors.lastname: Tichy
authors.forename: R
authors.initials: R
authors.lastname: Pudil
authors.forename: L
authors.initials: L
authors.lastname: Jebavy
authors.forename: J
authors.initials: J
authors.lastname: Maly
mesh_terms: D000328:Adult; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D014408:Biomarkers, Tumor / Q000097:blood*; D052279:Creatine Kinase, MB Form / Q000097:blood; D000074026:Fatty Acid Binding Protein 3; D050556:Fatty Acid-Binding Proteins / Q000097:blood; D024981:Glycogen Phosphorylase / Q000097:blood; D006321:Heart / Q000187:drug effects*; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D015470:Leukemia, Myeloid, Acute / Q000097:blood / Q000188:drug therapy* / Q000601:surgery; D009211:Myoglobin / Q000097:blood; D019210:Troponin I / Q000097:blood; D020107:Troponin T / Q000097:blood
chemical_list: D000970:Antineoplastic Agents; D014408:Biomarkers, Tumor; C493408:FABP3 protein, human; D000074026:Fatty Acid Binding Protein 3; D050556:Fatty Acid-Binding Proteins; D009211:Myoglobin; D019210:Troponin I; D020107:Troponin T; D024981:Glycogen Phosphorylase; C528446:glycogen phosphorylase BB, human; D052279:Creatine Kinase, MB Form