Autoimmune Myocarditis is related to pericardial effusion and pertussis. An important gene associated with Autoimmune Myocarditis is CD4 (CD4 Molecule), and among its related pathways/superpathways are Innate Immune System and ERK Signaling. Affiliated tissues include heart and bone marrow, and related phenotypes are homeostasis/metabolism and growth/size/body region