Supplementary Material for: Steroid and Ursodesoxycholic Acid Combination Therapy in Severe Drug-Induced Liver Injury

<i>Background:</i> Drug-induced liver injury (DILI) is the leading cause of acute severe liver disease in Western countries. Treatment strategies for DILI are still not well defined. <i>Aim:</i> We studied the safety and outcomes of steroid/ursodesoxycholic acid (UDCA) combination therapy in DILI patients. <i>Patients, Materials and Methods:</i> 15 consecutive patients with severe DILI were analyzed for clinical, biochemical and histological data. Nine patients were treated with a steroid step-down therapy with reduction of the daily dose over several weeks; 6 patients received a steroid pulse therapy for 3 days. UDCA was administered for several weeks in both groups. <i>Results:</i> Patients without histological signs of preexistent liver damage (n = 10) showed the most favorable clinical course. Bilirubin and serum transaminases dropped to &lt;50% of peak values within 2 weeks, and normalized within 4–8 weeks. In contrast, patients with positive autoimmune antibodies (anti-nuclear antibodies and/or soluble liver antigen) and/or histological features of chronic hepatitis (n = 3) exhibited a slower reduction in bilirubin and serum transaminase levels. These patients were given immunosuppressants (steroids, azathioprine) for a further 6 months. <i>Conclusion:</i> Treatment of severe DILI with corticosteroids (both pulse and step-down therapy) and UDCA appears to be safe, and leads to a more rapid reduction in bilirubin and transaminases after DILI.