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A case report of remission of refractory membranous nephropathy progressing to
stage 4 chronic kidney disease using low-dose rituximab: A long-term follow-up
#MMPMID29924035
Zhou XJ
; Zhou FD
; Wang SX
; Zhao MH
Medicine (Baltimore)
2018[Jun]; 97
(25
): e11184
PMID29924035
show ga
RATIONALE: As suggested by the 2012 KDIGO guidelines, persistent elevation of
serum creatinine >?3.5?mg/dl (>?309??mol/l) (or an estimated glomerular
filtration rate 30?ml/min per 1.73?m is one of contradictions for the use of
immunosuppressive therapy in membranous nephropathy. PATIENT CONCERNS: A
45-year-old man with membranous nephropathy negative for serum
anti-phospholipase-A2-receptor antibody, showed no response to corticosteroids
and cyclophosphamide. He progressed to chronic kidney disease stage 4 (CKD4)
under tacrolimus and relapsed after withdrawal. DIAGNOSES: The patient received
repeated renal biopsy, comfirming the diagnosis of membranous nephropathy with
progressive glomerular and tubulointerstitial scarring. INTERVENTIONS: He was
treated with successfully four times with lose-dose (180?mg/m every 2-3 months)
rituximab (RTX) depending on his B cell counts, aiming to remain at 0-5?cells/?l.
OUTCOMES: The patient was followed-up for almost 6 years. He achieved a partial
remission at 11 months and a complete remission of the nephritic range of
proteinuria at 34 months following infusion of RTX. RTX was well tolerated and
the patient's renal function improved. He had no edema and his dosage of
corticosteroids could be discontinued. LESSONS: This case strongly suggested that
rituximab has promising therapeutic significance, even in patients progressing to
CKD4.