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Turk J Gastroenterol. 2019 May;30(5):436-444. doi: 10.5152/tjg.2019.18328.

IL-28B genetic variation, gender, age, jaundice, hepatitis C virus genotype, and hepatitis B virus and HIV co-infection in spontaneous clearance of hepatitis C virus.

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Department of Viral Hepatitis and AIDS, The L.V. Gromashevskyi Institute of Epidemiology and Infectious Disease, Kiev, Ukraine.



Spontaneous viral clearance observed in some patients is one of the variants of the hepatitis C virus (HCV) infection natural history. We aimed to look at the complexity of factors affecting the spontaneous clearance of HCV (SC HCV).


A total of 357 anti-HCV positive patients (309 with chronic hepatitis C and 48 patients with SC HCV) were included into the study. We studied the effects of the interleukin-28B (IL-28B) gene polymorphism, gender, age, the routes of virus transmission, past hepatitis C with jaundice, HCV genotype, and hepatitis B virus (HBV) and HIV co-infection on the outcome of HCV infection.


Based on the study results, the SC HCV was found in 48 individuals (13.4%). The most significant positive factors affecting the SC HCV included IL-28B single nucleotide polymorphism (SNP) rs12979860 (CC) and SNP rs8099917 (TT) (OR 4.03, p<0.001) and (OR 3.14, p<0.002), female gender (OR 2.72, p<0.001), young age (OR 2.30, p<0.008), and past history of jaundice (OR 5.12, p<0.001). The markers of a past HBV infection were found significantly more often in SC.


Positive predictors of the SC HCV include favorable IL-28B genotype, female gender, young age, a history of jaundice, markers of a past HBV infection, the absence of HIV infection, but not the viral genotype.

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