PMID- 35263982 OWN - NLM STAT- MEDLINE DCOM- 20220311 LR - 20220311 IS - 0578-1426 (Print) IS - 0578-1426 (Linking) VI - 61 IP - 3 DP - 2022 Mar 1 TI - [The 493th case: recurrent edema of bilateral lower extremeties]. PG - 355-358 LID - 10.3760/cma.j.cn112138-20210603-00393 [doi] AB - A 43-year-old male patient with onset of edema caused by nephrotic proteinuria and low titer of anti-M type phospholipase-A(2)-receptor (PLA(2)R) antibody was diagnosed as idiopathic membranous nephropathy by renal biopsy. Administrated with prednisone 40 mg once a day and cyclosporine 100 mg twice a day as front-line regimen, the patient relapsed after transient partial remission. When treatment was combined with cyclophosphamide 100 mg once a day, the 24-hour total urine protein and titer of anti-PLA(2)R antibody were even elevated. Therefore, the patient received rituximab 1 g intravenously in April 2019, October 2019 and October 2020 respectively. CD19 positive B lymphocytes in peripheral blood were eliminated from 71/mul to zero. Immunosuppressants and corticosteroids were withdrawn successively. On the last follow-up in November 2020, the anti-PLA(2)R antibody was negative, and the 24-hour total urine protein and serum albumin was 4.4 g and 34 g/L, respectively. This case suggested the potential efficacy of rituximab for refractory membranous nephropathy. Further studies should explore whether the titer of anti-PLA(2)R antibody indicates the dose of rituximab. FAU - Xie, H Y AU - Xie HY AD - Department of Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China. FAU - Chen, G AU - Chen G AD - Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China. FAU - Li, X M AU - Li XM AD - Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China. FAU - Li, Xuemei AU - Li X AD - Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China. LA - chi PT - Case Reports PT - Journal Article PL - China TA - Zhonghua Nei Ke Za Zhi JT - Zhonghua nei ke za zhi JID - 16210490R RN - 0 (Autoantibodies) RN - 0 (Immunosuppressive Agents) RN - 0 (Receptors, Phospholipase A2) RN - 8N3DW7272P (Cyclophosphamide) SB - IM MH - Adult MH - *Autoantibodies MH - Cyclophosphamide/therapeutic use MH - Edema MH - *Glomerulonephritis, Membranous MH - Humans MH - Immunosuppressive Agents/therapeutic use MH - Male MH - Receptors, Phospholipase A2 EDAT- 2022/03/11 06:00 MHDA- 2022/03/12 06:00 CRDT- 2022/03/10 02:57 PHST- 2022/03/10 02:57 [entrez] PHST- 2022/03/11 06:00 [pubmed] PHST- 2022/03/12 06:00 [medline] AID - 10.3760/cma.j.cn112138-20210603-00393 [doi] PST - ppublish SO - Zhonghua Nei Ke Za Zhi. 2022 Mar 1;61(3):355-358. doi: 10.3760/cma.j.cn112138-20210603-00393.