Een shown to be similar to adalimumab with respect to binding to a panel of Fc receptors, including FccRIa, FccRIIa, FccRIIIa (158V) (with and without TNFa), and FccRIIIa (158F). Importantly, effector function activation (ADCC and CDC) was also demonstrated to be similar between ABP 501 and adalimumab using highly sensitive methods. The ADCC and CDC methods have been demonstrated to be sensitive t