AGENT FOR IMPROVING CYTOKINE RELEASE SYNDROME, ETC

[Problem to be Solved] The present invention provides a medicament for cytokine release syndrome, autoimmune-related adverse events, macrophage activation syndrome, hemophagocytic lymphohistiocytosis or Langerhans cell histiocytosis.[Means to Solve the Problem] The present invention provides a medicament for at least one selected from the group consisting of cytokine release syndrome, autoimmune-related adverse events, macrophage activation syndrome, hemophagocytic lymphohistiocytosis and Langerhans cell histiocytosis, wherein the medicament comprises a compound represented by the following formula I:or a pharmaceutically acceptable salt thereof.