The present invention relates to the general field of treatment and prevention of diseases involving an inflammatory condition, namely sepsis or infectious or viral diseases as well as diseases requiring for the treatment of immunosuppressive activity namely autoimmune diseases and graft rejection. In particular, the invention relates to an inhibitor of the activity or the formation of the PP1/GADD34 complex for the treatment of a condition requiring an immunosuppressive activity or an anti-inflammatory activity.
