Anti-CCP antibodies are a collection of ACPA that are cross-reactive to multiple citrullinated antigens. (9th March 2010) - Ioan-Facsinay, A; el-Bannoudi, H; Scherer, H U; van der Woude, D; Ménard, H A; Lora, M; Trouw, L A; Huizinga, T W J; Toes, R E M