A randomized trial of 24 versus 48 weeks of peginterferon α-2a in patients infected with chronic hepatitis C virus genotype 2 or low viral load genotype 1: A multicenter national study in Japan

Yoshiaki Iwasaki, Yasushi Shiratori, Shuhei Hige, Shuhei Nishiguchi, Hitoshi Takagi, Morikazu Onji, Haruhiko Yoshida, Namiki Izumi, Yutaka Kohgo, Kyosuke Yamamoto, Nobuhiro Sato, Akitaka Shibuya, Hidetsugu Saito, Michio Sata, Kazuyuki Suzuki, Shuichi Kaneko, Mitsuhiko Moriyama, Masao Omata

研究成果: Article査読

8 被引用数 (Scopus)

抄録

In a country such as Japan with the average age of patients with chronic hepatitis C treated with antivirals sometimes well above 60 years, the standard combination therapy is not well tolerated. In this randomized, prospective, controlled trial, we investigated the efficacy of 24-week peginterferon α monotherapy for easy-to-treat patients. A total of 132 patients chronically infected with hepatitis C virus (HCV) genotype 2 (n = 115) or low viral load HCV genotype 1 (<100 kIU/ml, n = 17) were treated with peginterferon α-2a (180 μg/week). Patients with a rapid virological response (RVR, HCV RNA negative or <500 IU/ ml at week 4) were randomized for a total treatment duration of 24 (group A) or 48 (group B) weeks. Patients who did not show RVR (group C) were treated for 48 weeks. Sustained virological response (SVR) was assessed by qualitative reverse-transcription polymerase chain reaction. One hundred eight of 132 (82%) patients with RVR were randomized. SVR rates were 60% (group A), 79% (group B), and 27% (group C), respectively. Similar SVR rates were achieved in patients infected with HCV genotype 2 with low pretreatment viral load (<1000 kIU/ml) in group A (81%) and group B (79%) (P = 0.801), whereas in those with higher viral load (≥1000 kIU/ml), a lower SVR rate was identified in group A (26%) than in group B (67%) (P = 0.041). In conclusion, in patients infected with HCV genotype 2 and pretreatment viral load below 1000 kIU/ml who achieve RVR, 24-week treatment with peginterferon α-2a alone is clinically sufficient. Those who show no RVR or have higher baseline viral load, require alternative therapies.

本文言語English
ページ(範囲)468-479
ページ数12
ジャーナルHepatology International
3
3
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • Hepatology

フィンガープリント 「A randomized trial of 24 versus 48 weeks of peginterferon α-2a in patients infected with chronic hepatitis C virus genotype 2 or low viral load genotype 1: A multicenter national study in Japan」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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