Case series of low dose rituximab for membranous nephropathy; a single centre experience

Abstract

Introduction: Rituximab is the recent treatment of choice for primary membranous nephropathy However, dose of rituximab mentioned in literature is high and not economical in middle income countries. Low dose rituximab based on CD 19 cell count can be tried as an alternative for high dose rituximab for inducing clinical remission in appropriate clinical settings. Case Series: Four patients were administered low dose rituximab and initial CD 19 count was monitored for optimal rituximab response. Three males and one female are part of this case series. Renal biopsies showed membranous nephropathy with tissue phospholipase A2 receptor (PLA2R) positivity in two cases. Serum PLA2R was positive for the same two cases. Two patients completely remitted after one year, one male patient required additional rituximab dose based on CD19 count, one patient required single dose of rituximab for partial remission in the background of tacrolimus with steroids. One patient failed to remit on low dose rituximab protocol. Conclusion: Low dose Rituximab can be tried as a favorable alternative for high dose Rituximab in appropriate clinical settings.