The experience of treatment for hepatitis C virus genotype 6 (HCV-6) was limited in Taiwan due to rare incidence in general population and lack of medical care in the correction facilities where HCV-6 was endemic. This work was to investigate the response of treating HCV-6 incarcerated injection drug users (IDU), compared with HCV-1 incarcerated IDUs. 106 inmates completed treatment and follow-up (39 HCV-6, 67 HCV-1, cirrhosis or co-infection with hepatitis B virus or human immunodeficiency virus excluded) were enrolled in this retrospective study among 182 registered peginterferon/ribavirin therapies of National Health Insurance (NHI) reimbursement in the Kaohsiung and Pingtung correcting facilities from 2014 to 2017. Among the 67 HCV-1 and 39 HCV-6 patients, there was no difference with regard to patient’s demographics, hemogram, baseline HCV viral load, except for a higher alanine aminotransferase (ALT) level in HCV-6 patients than HCV-1 patients. Afterword, a higher rapid viral response (RVR) was noted in HCV-6 (64% vs 41%, p=0.018), the sustained viral response (SVR) in HCV-6 or HCV-1 patients who received at least one dose of treatment and the patients who completed the full course of treatment were comparably excellent, (100% vs 89%, p=0.16) and (100% vs 91%, p=0.19) respectively. Although interferon-free direct acting antiviral agents (DAA) are the mainstay of therapy in the world, the peginterferon/ribavirin may be an alternative option for the incarcerated IDU patients with HCV-1 or HCV-6 infection, based on the excellent SVR rate and the limited governmental support for DAA treatment.
在台灣,第6型C型肝炎(HCV-6)少見於社區患者,然而在靜脈注射藥癮受刑人C型肝炎中約有28%是第六型,因為矯正機關缺乏醫療照護,故國內第6型的治療經驗有限。自2013二代健保開始惠及受刑人之醫療照護,直到2017年底於高雄與屏東矯治機關,共有182位受刑人接受長效型干擾素併用雷巴威靈治療C型肝炎---HCV-1a, HCV-1b, HCV-6與其他型(2,3或mixed 感染)之佔比分別29.6%, 24.1%, 24.7%, 與21.4%。扣除第2,3型或混和型,與仍在治療追蹤者,共有39位HCV-1與67位HCV-6共106位靜脈注射藥癮受刑人納入研究比較,本研究採回溯性分析HCV-1與HCV-6兩組人口學特徵,檢驗值,病毒量,治療後結果SVR;HCV-1與HCV-6皆為男性,皆靜脈注射藥癮者,年齡,體重,白血球數,血色素,血小板數,肌酐酸與病毒量,兩組無差異。雷巴威靈劑量,中斷率,兩組無差異,但HCV-6有較佳快速病毒反應RVR,與高病毒清除率。第6 型C型肝炎受刑人干擾素治療之療效,如同文獻報告極優,不亞於第1型。觀之國內受刑人C型肝炎以第1,6型為主,加上兩型干擾素治療SVR相當高,以及醫療費用考量DDA無法應用,故在接受矯正服刑期間干擾素不失為治療C型肝炎的良方。