This invention provides methods and compositions for the treatment and/or prevention of cancer, including solid malignancies and hematologic malignancies. In particular, the present invention relates to immunotherapy using antigen-presenting cells loaded with tumor associated peptide antigens (TAPAs). If a subject expresses at least one tumor-associated antigen, the subject can be treated by antigen-presenting cells (e.g., dendritic cells) loaded with at least one tumor-associated peptide antigen derived from the tumor-associated antigen (s) expressed by the subject. This personalized immunotherapy induces or enhances immune responses to cells that express tumor-associated antigen(s).