title: Predicting the outcomes of combination therapy in patients with chronic hepatitis C using artificial neural network.
abstract: BACKGROUND
  Treatment with Peginterferon Alpha-2b plus Ribavirin is the current standard therapy for chronic hepatitis C (CHC). However, many host related and viral parameters are associated with different outcomes of combination therapy.
  
  
  OBJECTIVE
  The aim of this study was to develop an artificial neural network (ANN) model to predetermine individual responses to therapy based on patient's demographics and laboratory data.
  
  
  METHODS
  This case-control study was conducted in Tehran, Iran, on 139 patients divided into sustained virologic response (SVR) (n = 50), relapse (n = 50) and non-response (n = 39) groups according to their response to combination therapy for 48 weeks. The ANN was trained 300 times (epochs) using clinical data. To test the ANN performance, the part of data that was selected randomly and not used in training process was entered to the ANN and the outputs were compared with real data.
  
  
  RESULTS
  Hemoglobin (P < 0.001), cholesterol (P = 0.001) and IL-28b genotype (P = 0.002) values had significant differences between the three groups. Significant predictive factor(s) for each group were hemoglobin for SVR (OR: 1.517; 95% CI: 1.233-1.868; P < 0.001), IL-28b genotype for relapse (OR: 0.577; 95% CI: 0.339-0.981; P = 0.041) and hemoglobin (OR: 0.824; 95% CI: 0.693-0.980; P = 0.017) and IL-28b genotype (OR: 2.584; 95% CI: 1.430-4.668;P = 0.001) for non-response. The accuracy of ANN to predict SVR, relapse and non-response were 93%, 90%, and 90%, respectively.
  
  
  CONCLUSIONS
  Using baseline laboratory data and host characteristics, ANN has been shown as an accurate model to predict treatment outcome, which can lead to appropriate decision making and decrease the frequency of ineffective treatment in patients with chronic hepatitis C virus (HCV) infection.
authors: Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors: Forough
authors: F
authors: Sargolzaee Aval
authors: Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors: Nazanin
authors: N
authors: Behnaz
authors: Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IR Iran.
authors: Mohamad Reza
authors: MR
authors: Raoufy
authors: Middle East Liver Diseases Center (MELD), Tehran, IR Iran.
authors: Seyed Moayed
authors: SM
authors: Alavian
keywords: Cholesterol; Hemoglobin; Hepatitis C, Chronic; IL28B Protein, Human; Peginterferon Alfa-2b; Ribavirin