JOURNAL ARTICLE

Host interleukin-28B genetic variants versus viral kinetics in determining responses to standard-of-care for Asians with hepatitis C genotype 1

Chung-Feng Huang, Ming-Lun Yeh, Jee-Fu Huang, Jeng-Fu Yang, Ming-Yen Hsieh, Zu-Yau Lin, Shinn-Cherng Chen, Liang-Yen Wang, Edward Hsi, Suh-Hang Hank Juo, Chia-Yen Dai, Wan-Long Chuang, Ming-Lung Yu
Antiviral Research 2012, 93 (2): 239-44
22193282

BACKGROUND: Both interleukin-28B genetic variants and on-treatment virological responses are factors predictive of treatment outcome in hepatitis C virus genotype 1 (HCV-1) patients. We aimed to compare the clinical significance of the two factors.

METHODS: Rs8099917 genotype and on-treatment responses were determined in 182 HCV-1 patients with 48-week peginterferon/ribavirin.

RESULTS: Comparing to patients with rs8099917 TG/GG genotype, those with TT genotype had significantly higher rapid virological response (RVR, 46.2% vs. 19.2%, P=0.01) and sustained virological response (SVR, 85.3% vs. 42.3%, P<0.001) rates. Logistic regression analysis revealed that the strongest factor predictive of a RVR was the carriage of rs8099917 TT genotype (odds ratio/95% confidence intervals [OR/CI]: 4.25/1.39-13.01). The most important factor predictive of an SVR was the attainment of a RVR (OR/CI: 57.22/6.23-525.37), followed by the carriage of rs8099917 TT genotype (OR/CI: 10.06/3.12-32.44). However, while on-treatment factors were taken into account, the cEVR was the most important determinant to an SVR (OR/CI:54.98/9.07-333.38), whereas the influence of rs8099917 genotype became non-significant in non-RVR patients.

CONCLUSIONS: Rs8099917 TT genotype is significantly independently predictive of on-treatment virological responses, which were the major determinants of an SVR, in Asian HCV-1 patients.

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