PLA2R1 and idiopathic membranous glomerulonephritis: The utility of monitoring anti-PLA2R antibody post-transplant remains unclear, but should be considered in those with high pre-transplant circulating levels of anti-PLA2R antibody, in those with early disease recurrence (to predict disease progression), to determine response to treatment and to differentiate disease recurrence from de novo membranous GN or other causes of proteinuria (4, 159).