conclusions in patients with chc g1 and receiving combination therapy, itpa snp-based index was an accurate and practical solution for prediction of severe anemia. background single-nucleotide polymorphisms (snp) in the inosine triphosphate pyrophosphatase (itpa) gene correlate with ribavirin (rbv)-induced anemia in patients with chronic hepatitis c (chc) receiving combination therapy. managing...

The purine analogues tenofovir and abacavir are precursors of potential substrates for the enzyme Inosine 5'-triphosphate pyrophosphohydrolase (ITPase). Here, we investigated the association of ITPase activity and ITPA genotype with the occurrence of adverse events (AEs) during combination antiretroviral therapy (cART) for human immunodeficiency virus (HIV) infection. In 393 adult HIV-seroposit...

Globally, over 4% of the world population is affected by hepatitis C virus (HCV) infection. The current standard of care for hepatitis C infection is combination therapy with pegylated interferon and ribavirin for 48 weeks, which yield a sustained virological response in only a little over half of the patients with genotype 1 HCV. We investigated the clinical importance of pharmacogenetics in t...

BACKGROUND Human genetic factors influence the outcome of pegylated interferon and ribavirin hepatitis C therapy. We explored the role of IL28B, APOH and ITPA SNPs on the outcomes of triple therapy including telaprevir or boceprevir in patients with compensated cirrhosis chronically infected with HCV-1. PATIENTS AND METHODS A total of 256 HCV-1 Caucasian treatment-experienced patients with co...

Ribavirin (RBV)-induced anemia is a serious side effect of pegylated interferon (PEG-IFN) plus RBV therapy which is the standard care most effective for hepatitis C virus (HCV) infection. In the present study, we investigated the association of inosine triphosphate pyrophosphatase (ITPA) genotypes with RBV-induced hemoglobin (Hb) reduction in HCV patients treated with PEG-IFN/RBV therapy. The g...

BACKGROUND Antiviral treatment is recommended for chronic hepatitis C patients with advanced fibrosis to reduce and prevent cirrhosis-related complications. AIM To evaluate the efficacy and safety of telaprevir (TVR)-based triple therapy for patients with advanced fibrosis in a clinical practice setting. METHODS This prospective, multicentre study consisted of 102 patients with advanced fib...

BACKGROUND/OBJECTIVE Genetic polymorphisms in the inosine triphosphatase (ITPA) gene have been associated with the protection from early ribavirin(RBV)-induced hemolytic anemia among patients with chronic hepatitis C virus (HCV) infection. The aim of the present study was to investigate the association between the functional ITPA variants and hematological side effects during antiviral therapy ...

42 Background 43 Polymorphisms of the ITPA gene have been associated with anemia during 44 combination therapy in HCV mono-infected patients. Our aim was to confirm this 45 association in HIV/HCV co-infected patients 46 Methods 47 In this prospective, observational study, 73 HIV/HCV co-infected patients treated with 48 Peg-IFN plus RBV were enrolled. Two SNPs within or adjacent to ITPA gene (rs...