PROBLEM TO BE SOLVED: To provide an ApoC1_mRNA expression inhibitor.SOLUTION: A composition containing a compound represented by formula (1) or its salt or their solvate as an active ingredient.COPYRIGHT: (C)2014,JPO&INPIT【課題】ApoC1_mRNAの発現抑制剤の提供。【解決手段】次式(I)で表される化合物若しくはその塩又はそれらの溶媒和物を有効成分とする組成物:【選択図】なし