PROBLEM TO BE SOLVED : To provide methods of preventing or treating celiac disease. SOLUTION : A method of preventing or treating celiac disease comprises administering to an individual at least one agent selected from : (a) a peptide comprising at least one epitope comprising a specific sequence, and equivalents thereof; and (b) an analogue of (a) which is capable of being recognized by a T cell receptor that recognizes the peptide of (a) and which is not more than 50 amino acids in length. SELECTED DRAWING : None COPYRIGHT : (C)2019, JPO&INPIT