NPHS1 and focal segmental glomerulosclerosis: In patients with post-transplant recurrent FSGS, the prevalence of anti-nephrin autoantibodies also varies depending on cohort characteristics and antibody detection techniques and source of recombinant protein (see below and in Table 1), ranging from 38% to 100%, and associates with shorter recurrence-free allograft survival [7, 8] (Table 1).