The present invention relates to anti-peptidylarginine deiminase 2 (PAD2) antibodies and anti-PAD2 antibodies for use in the treatment of autoimmune diseases characterized by extracellular citrullination, such as rheumatoid arthritis (RA). The invention further relates to a method for treatment of an autoimmune disease characterized by extracellular citrullination comprising the administration of a suitable amount of an anti-PAD2 antibody to a subject.