The present invention provides a prophylactic or therapeutic agent and a prophylactic or therapeutic method superior in the prophylaxis or treatment of Sjogren’s syndrome. Provided are a prophylactic or therapeutic agent for Sjogren’s syndrome, containing a compound represented by the formula (I): wherein each symbol is as defined in the Specification, or a pharmaceutically acceptable salt thereof, and a method for the prophylaxis or treatment of Sjogren’s syndrome, including administering an effective amount of the compound represented by the formula (I) or a pharmaceutically acceptable salt thereof, to a subject in need thereof.本發明提供於預防或治療蕭格倫徵候群上優異之預防或治療劑及預防或治療方法。本發明提供用於蕭格倫徵候群之預防或治療劑，其含有下式(I)所示化合物或其醫藥上可接受之鹽：其中各符號如本說明書中之界定；及用於預防或治療蕭格倫徵候群之方法，該方法包括投予有其需要之對象有效量之式(I)所示化合物或其醫藥上可接受之鹽。
