autoaggressive

adjective

au·​to·​ag·​gres·​sive ˌȯ-tō-ə-ˈgre-siv 

: relating to or being antibodies or T cells that attack the molecules, cells, or tissues of the organism producing them : autoimmune

Ideally, one would like to modulate or eliminate the autoaggressive T cells but leave the remaining immune system intact.

—Hartmut Wekerle and Reinhard Hohlfeld, The New England Journal of Medicine