PT - JOURNAL ARTICLE AU - Atsuki Ohashi AU - Jiro Kumagai AU - Kiyotaka Nagahama AU - Hajime Fujisawa TI - Case of immunotactoid glomerulopathy showing high responsiveness to steroids therapy despite severe pathological features AID - 10.1136/bcr-2019-229751 DP - 2019 Jul 01 TA - BMJ Case Reports PG - e229751 VI - 12 IP - 7 4099 - http://casereports.bmj.com/content/12/7/e229751.short 4100 - http://casereports.bmj.com/content/12/7/e229751.full SO - BMJ Case Reports2019 Jul 01; 12 AB - A 72-year-old woman presented with nephrotic proteinuria and moderate haematuria. Renal pathology was compatible with immunotactoid glomerulopathy (ITG), for which there is no consensus for appropriate therapy. We, therefore, postponed immunosuppressive therapy. After 4 years, the patient’s renal function started to decline and renal pathology was re-evaluated, revealing a pathological change from mesangial proliferative glomerulonephritis to endocapillary proliferative glomerulonephritis. Treatment with oral prednisolone (30 mg/day) was initiated. Within 5 weeks, complete remission of proteinuria was obtained (proteinuria 6.02 g/gCr to 0.12 g/gCr), and the patient’s renal function stabilised. Generally, responsiveness to immunosuppressive therapy is poor in patients with ITG, and the present case represented a very rare clinical course. Some previous cases have indicated susceptibility to the therapy, regardless of the severity of renal damage. As a possible distinct entity that determines susceptibility to immunosuppressive therapy, we suggest the presence of a latent lymphoproliferative disease with no significant haematological symptoms.