<qa>  What is the median survival of IPF at five years after diagnosis?Idiopathic pulmonary fibrosis IPF is a chronic and fatal pulmonary disorder. Conventional treatment with immunosuppressive therapy has been disappointing, with a median survival of 40 at five years after diagnosis. Moreover, this therapy may lead to premature deaths that are a result of immunosuppression and susceptibility to infectious disease. Another problem related to IPF, is that we have an incomplete picture of the natural history of the pathogenesis of this disorder. Clearly, new strategies for therapy are necessary. 