| Summary: | <p>Abstract</p> <p>Background</p> <p>The aims of this study were to analyze factors motivating the acceptance of interferon (IFN) therapy and to clarify the prevalence of oral mucosal diseases in hepatitis C virus (HCV)-infected Japanese patients treated with IFN.</p> <p>Findings</p> <p>A total of 94 HCV-infected patients who were admitted to our hospital for IFN therapy were asked questions regarding their motivation to accept IFN therapy and were investigated for the presence of oral lichen planus (OLP) before and during IFN treatment. Recommendation and encouragement from other people were the most common factors motivating the acceptance of IFN therapy (49/94, 52.13%). The other motivators were independent decision (30.85%), economic reasons (5.32%), and others. According to multivariate analysis, three factors – sex (male), retreatment after previous IFN therapy, and independent decision to accept IFN therapy - were associated with patients after curative treatment of hepatocellular carcinoma (HCC). The adjusted odds ratios for these three factors were 26.06, 14.17, and 8.72, respectively. The most common oral mucosal lesions included OLP in 11 cases (11.70%). One patient with OLP had postoperative squamous cell carcinoma of the tongue. The rate of sustained virological response (SVR) was 45.45% in cases with OLP and 54.55% in cases without OLP. There were no patients who discontinued IFN therapy because of side effects such as oral mucosal diseases.</p> <p>Conclusions</p> <p>We should give full explanation and recommend a course of treatment for a patient to accept IFN therapy. The system to support liver disease as well as oral diseases is also necessary for patient treated for IFN therapy.</p>
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