Abstract: The present invention provides a method for enhancing the immune function of a memory T cell which comprises the step of coinhibting signalling via an inhibitory receptor which regulates T cell exhaustion and via the p38 MAP kinase signalling pathway in the T cell, and a method for treating and/or preventing an immune condition in a subject, which comprises the step of enhancing the immune function of a memory T cell in the subject by such a method. There is also provided a pharmaceutical composition or kit comprising an agent capable of inhibiting signalling via an inhibitory receptor which regulates T cell exhaustion, such as PD-1, and an agent capable of inhibiting the p38 MAP kinase signalling pathway.