title: Predictors of severe haematological toxicity secondary to pegylated interferon plus ribavirin treatment in HIV-HCV-coinfected patients.
abstract: BACKGROUND
  Haematological adverse events related to pegylated interferon (PEG-IFN) and ribavirin (RBV) therapy could affect the patients' quality of life; however, the risk factors for severe haematological toxicity associated with this therapy in patients coinfected with hepatitis C virus (HCV) and HIV are unclear. The objective of this study was to identify predictors of severe haematological toxicity among HIV-HCV-coinfected patients treated with PEG-IFN plus RBV.
  
  
  METHODS
  This retrospective multicentric study included 237 HIV-HCV-coinfected patients on PEG-IFN plus RBV. Predictors of severe anaemia, neutropenia, thrombocytopenia and overall haematological toxicity were analyzed.
  
  
  RESULTS
  Eighty (34%) individuals showed an episode of severe haematological toxicity. Severe anaemia, neutropenia and thrombocytopenia occurred in 32 (13%), 42 (18%) and 26 (11%) patients, respectively. In the multivariate analysis, zidovudine use (adjusted odds ratio [AOR] 3.3; 95% confidence interval [CI] 1.6-10; P = 0.001), baseline body weight < 65 kg (AOR 2.5; 95% CI 1.1-5; P = 0.024), cirrhosis (AOR 5; 95% CI 1.6-16.6; P = 0.006), PEG-IFN-alpha2a (AOR 2.7; 95% CI 1.1-6.6; P = 0.029) and pretreatment haemoglobin level < 14 g/dl (AOR 2.7; 95% CI 1.3-5.5; P = 0.005) were associated with any kind of severe haematological toxicity. Likewise, haemoglobin level < 13 g/dl, neutrophil counts < 2,500 cells/mm3 and platelet counts < 175,000 cells/mm3 were independent predictors of severe anaemia, neutropenia and thrombocytopenia, respectively.
  
  
  CONCLUSIONS
  Zidovudine treatment, cirrhosis, baseline low body weight, use of PEG-IFN-alpha2a, and baseline haemoglobin level < 14 g/dl are predictors of overall severe haematological toxicity secondary to PEG-IFN plus RBV in HIV-infected individuals. Low pretreatment levels of each haematological series predict a significant decrease of their values during therapy.
authors.affiliation: Unidad de Enfermedades Infecciosas, Servicio de Medicina Interna, Hospital Universitario de Valme, Sevilla, Spain.
authors.forename: José A
authors.initials: JA
authors.lastname: Mira
authors.forename: Luis F
authors.initials: LF
authors.lastname: López-Cortés
authors.forename: Dolores
authors.initials: D
authors.lastname: Merino
authors.forename: Ana
authors.initials: A
authors.lastname: Arizcorreta-Yarza
authors.forename: Antonio
authors.initials: A
authors.lastname: Rivero
authors.forename: Antonio
authors.initials: A
authors.lastname: Collado
authors.forename: María J
authors.initials: MJ
authors.lastname: Ríos-Villegas
authors.forename: Mercedes
authors.initials: M
authors.lastname: González-Serrano
authors.forename: Manuel
authors.initials: M
authors.lastname: Torres-Tortoso
authors.forename: Juan
authors.initials: J
authors.lastname: Macías
authors.forename: Bárbara
authors.initials: B
authors.lastname: Valera-Bestard
authors.forename: Elisa
authors.initials: E
authors.lastname: Fernández-Fuertes
authors.forename: José A
authors.initials: JA
authors.lastname: Girón-González
authors.forename: Fernando
authors.initials: F
authors.lastname: Lozano
authors.forename: Juan A
authors.initials: JA
authors.lastname: Pineda
mesh_terms: D000328:Adult; D000740:Anemia / Q000097:blood / Q000139:chemically induced; D000998:Antiviral Agents / Q000008:administration & dosage / Q000009:adverse effects*; D015415:Biomarkers / Q000097:blood; D004359:Drug Therapy, Combination; D005260:Female; D005355:Fibrosis; D006678:HIV; D015658:HIV Infections / Q000150:complications* / Q000188:drug therapy; D019698:Hepatitis C, Chronic / Q000150:complications* / Q000188:drug therapy*; D006801:Humans; D007279:Injections, Subcutaneous; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000008:administration & dosage / Q000009:adverse effects*; D007958:Leukocyte Count; D008297:Male; D009503:Neutropenia / Q000097:blood / Q000139:chemically induced; D010976:Platelet Count; D011092:Polyethylene Glycols / Q000008:administration & dosage / Q000009:adverse effects*; D011994:Recombinant Proteins; D012189:Retrospective Studies; D012254:Ribavirin / Q000008:administration & dosage / Q000009:adverse effects*; D012307:Risk Factors; D013030:Spain; D013921:Thrombocytopenia / Q000097:blood / Q000139:chemically induced; D015215:Zidovudine / Q000627:therapeutic use
chemical_list: D000998:Antiviral Agents; D015415:Biomarkers; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D011994:Recombinant Proteins; D011092:Polyethylene Glycols; D012254:Ribavirin; D015215:Zidovudine; C417083:peginterferon alfa-2b; C100416:peginterferon alfa-2a