We read with great interest the manuscript by de Martin et al., 1 reporting early predictive factors for a non-response to corticosteroid therapy in acute severe autoimmune hepatitis (AIH). The authors propose a score to help identify patients who do not respond to corticosteroids and may require urgent liver transplantation (LT).While previous studies have suggested that a trial of corticosteroids with early evaluation of response is justified in almost all patients with acute severe AIH, there are still some uncertainties about the optimal management of these patients.First, the dose and route of administration of corticosteroids has yet to be determined. In the current study prednisone or prednisolone was administered in variable doses, although no differences were found between patients receiving a higher or a lower dose of steroids. 1 In another recently published study, comprising a less severe cohort of patients, a high response rate following administration of intravenous steroids was reported. 3 Although the choice of dose and route of steroids should be personalised, we suspect that in the appropriately selected individual, oral corticosteroids should suffice, and should most likely be the standard of care. 2 Second, in a considerable proportion of patients, azathioprine was added as a second immunosuppressive medication. Although the timing of its administration and of its effect on the outcome was not reported, we should emphasize that in an acute presentation of AIH it is not recommended to start azathioprine for a number of reasons, including poor drug metabolism and risk of worsening cholestasis. 4 Lastly, in the event of corticosteroid failure, the possible role of other immunosuppressive medications has yet to be established in patients with acute severe AIH. Alternative therapies such as calcineurin inhibitors and mycophenolate mofetil (MMF) have not been shown to be effective in observational studies, and not specifically in the setting of acute severe AIH. An earlier study from King's College Hospital in London reported a treatment failure group in their cohort of treatment-naïve icteric AIH patients. 5 In the treatment failure group (n = 13), 11 patients received second-line immunosuppressive treatment after starting steroids, and 9 patients were reported as being "rescued" with alternative therapy (tacrolimus, n = 7; MMF, n = 1; and plasmapheresis, n = 1).In conclusion, further work is still required in order to determine the optimal steroid induction protocol (dose, route, and length of treatment) as well as the possible role of other immunosuppressive agents, particularly calcineurin inhibitors in this particularly difficult to treat population.