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Meta‐analysis: IL 28 B polymorphisms predict sustained viral response in HCV patients treated with pegylated interferon‐α and ribavirin
Author(s) -
Chen Y.,
Xu H.X.,
Wang L.J.,
Liu X.X.,
Mahato R. I.,
Zhao Y.R.
Publication year - 2012
Publication title -
alimentary pharmacology and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.308
H-Index - 177
eISSN - 1365-2036
pISSN - 0269-2813
DOI - 10.1111/j.1365-2036.2012.05131.x
Subject(s) - ribavirin , medicine , pegylated interferon , genotype , odds ratio , hepatitis c virus , gastroenterology , confidence interval , interleukin 28b , hepatitis c , immunology , virology , virus , biology , gene , biochemistry
Summary Background Interleukin ( IL ) 28 B single nucleotide polymorphisms can predict sustained virological response ( SVR ) in hepatitis C virus ( HCV ) patients following pegylated interferon‐alpha ( PEG IFN ‐α) and ribavirin treatment. Aim To design a meta‐analysis to determine IL 28 B genotypes', rs12979860 CC and rs8099917 TT , correlation with SVR in PEG IFN ‐α/ribavirin‐treated HCV patients. Methods Meta‐analysis was performed in 17 studies of rs12979860 CC vs. CT / TT and 17 of rs8099917 TT vs. TG / GG . Odds ratios ( OR ) and confidence intervals (95% CI ) were calculated by fixed‐ or random‐effects models. Heterogeneity, sensitivity analysis and publication bias were also assessed. Results Of 4252 Asian, Caucasian and African HCV patients analysed for rs12979860, SVR was more frequent in CC (vs. CT / TT ; OR = 4.76, 95% CI : 3.15–7.20). Moreover, CC was associated with SVR for HCV genotype‐1 or ‐4 infections ( OR genotype 1 = 5.52, 95% CI : 3.74–8.15; OR genotype 4 = 8.11, 95% CI : 4.13–15.93), regardless of ethnicity. Of 4549 Caucasian and Asian HCV patients analysed for rs8099917, SVR was more frequent in TT (vs. TG / GG ; OR = 3.31, 95% CI : 2.39–4.59). Moreover, TT was associated with SVR for HCV ‐1 ( OR genotype 1 = 4.28, 95% CI : 2.87–6.38). Rs8099917 TT predictive value was stronger in Asians ( OR A sians = 8.09, 95% CI : 5.63–11.61; OR C aucasians = 3.00, 95% CI : 2.03–4.45). Ethnicity stratification revealed that rs8099917 TT had slight predictive value in Asian HCV ‐2/3 patients ( OR = 1.99, 95% CI : 1.09–3.62). Conclusions IL 28B rs12979860 CC and rs8099917 TT are strong SVR predictors for PEG IFN ‐α/ribavirin‐treated HCV ‐1 patients, regardless of ethnicity. In HCV ‐2/3, rs12979860 CC has no SVR predictive value, but rs8099917 TT was slightly associated with SVR in Asians.