“…Second, high concentrations of pre-existing IgG DSAs (positive CDC CM) are a risk factor for HAR. Over the course of the last decade, the implementation of various DS protocols (see below) for highly sensitized patients has resulted in successful kidney transplantation in patients with positive FCCMs that have been caused by DSAs; however, the graft outcome and survival times appear to depend on several parameters, e.g., the amount of DSAs that are producing a positive FCCM, their isotype, the cytokine profile of the recipient and others (Akalin & Bromberg, 2005;Bray 1994;Christiaans et al, 1998;Graff et al, 2009;Horsburgh et al, 2000;Lobashevsky et al, 2010;Martin et al, 2003;Mujtaba et al, 2010;Qasi et al, 2006;Scornik et al, 1997;Worthington et al, 2003;Zachary et al, 2005). It has recently been demonstrated that some DSAs that are detected by FC, but not by CDC (FC pos/CDC neg), are able to activate complement.…”