1.Thyroid dysfunction and long-term outcome during and after interferon-alpha therapy in patients with chronic hepatitis C.
Themistoklis VASILIADIS ; Vasiliadis THEMISTOKLIS ; Panagiotis ANAGNOSTIS ; Anagnostis PANAGIOTIS ; Georgios NALMPANTIDIS ; Nalmpantidis GEORGIOS ; Konstantinos SOUFLERIS ; Soufleris KONSTANTINOS ; Kaliopi PATSIAOURA ; Patsiaoura KALIOPI ; Nikolaos GRAMMATIKOS ; Grammatikos NIKOLAOS ; Eleni ORFANOU-KOUMERKERIDOU ; Orfanou-Koumerkeridou ELENI ; Konstantinos KARGIOTIS ; Kargiotis KONSTANTINOS ; Aristidis SLAVAKIS ; Slavakis ARISTIDIS ; Aristidis DELIYIANNIDIS ; Deliyiannidis ARISTIDIS ; Nikolaos EUGENIDIS ; Eugenidis NIKOLAOS
Annals of the Academy of Medicine, Singapore 2011;40(9):394-400
INTRODUCTIONThyroid dysfunction (TD) is a well-established adverse effect in chronic hepatitis C virus (HCV)-infected patients, treated with interferon-alpha (IFN-α), with or without ribavirin. However, the long-term outcome is not well-studied. The purpose of this study was to estimate the prevalence and long-term outcome of TD after HCV-therapy.
MATERIALS AND METHODSRetrospective analysis of 109 HCV-treated patients (for 6 to 12 months, according to HCV genotype), for the period 1996 to 2008. Thyroid function tests were performed every 3 months during therapy and after discontinuation (3 months to 12 years). Routine laboratory tests and virological assessment were performed according to generally accepted practice.
RESULTSTD was observed in 26 patients (23.85%). The positive and negative predictive value for thyroid autoantibodies (ATA) was 80% and 72.7%, respectively. Relative risk for those with positive ATA was 2.9 (95% CI: 1.6 to 5.3, P = 0.014). The median duration of TD was 12.0 months (min: 3; max: 132). The median follow-up period for the patients with TD was 25.5 months (min: 12; max: 144). Finally, 15 patients developed permanent TD (57.69%), compared to 11 with temporary TD (42.31%). Sex is a risk factor for TD, as there were more females than males affected (P = 0.011). Genotype, viral load, time of HCV-exposure prior to therapy, and virological response did not differ between patients with and without TD.
CONCLUSIONTD among HCV-treated patients was more frequent than usually reported, with >50% developing permanent TD. ATA status may play a role in estimating the risk of subsequent TD. Women appear to be more vulnerable to TD than men.
Adult ; Aged ; Antiviral Agents ; administration & dosage ; adverse effects ; therapeutic use ; Case-Control Studies ; Female ; Hepatitis C ; complications ; drug therapy ; Humans ; Interferon-alpha ; administration & dosage ; adverse effects ; therapeutic use ; Male ; Middle Aged ; Prevalence ; Ribavirin ; administration & dosage ; therapeutic use ; Sex Factors ; Thyroid Diseases ; chemically induced ; epidemiology ; etiology ; Thyroid Function Tests ; Time Factors ; Young Adult
Result Analysis
Print
Save
E-mail