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  • Title: Ofatumumab in post-transplantation recurrence of a pediatric steroid-resistant idiopathic nephrotic syndrome.
    Author: Bernard J, Bruel A, Allain-Launay E, Dantal J, Roussey G.
    Journal: Pediatr Transplant; 2018 Jun; 22(4):e13175. PubMed ID: 29569812.
    Abstract:
    Treatment of SRNS is a challenge. Antiproliferative agents and depleting antibodies have been reported to be effective. However, these agents are not always successful, and use of ofatumumab could provide a different treatment option. Our patient was diagnosed with a SRNS at 5 years of age. She developed ESRD, with FSGS. This was cause for a first renal transplantation. The NS relapsed, leading to loss of the graft, and a second renal transplantation was performed. Due to the recurrence of the NS, IAds were initiated and led to a complete remission. Our patient remained dependent on IAds, however, despite treatments with calcineurin inhibitors, corticosteroids, rituximab, and abatacept. Ofatumumab was introduced and led to a remission, thus allowing cessation of the IAd treatment. Another infusion of ofatumumab was administered 8 months after the last one, due to the recurrence of the NS and a renewed increase in B cells. Although it did not result in a complete remission, the proteinuria was stabilized in the absence of IAds. Ofatumumab may be an alternative treatment for post-transplantation rituximab-resistant SRNS, although this needs to be confirmed by further studies.
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