Lupus & antiphospholipid syndrome

Rituximab as add-on therapy in patients with resistant lupus nephritis who have failed induction or maintenance therapy with other agents: A real-world experience from a single center in Mumbai

LupusPublished Retrospective cohort study

Authors' conclusion

Re-RTX demonstrated efficacy and safety as an induction therapy for resistant LN. However, the response waned after 1 year, underscoring the need for optimized maintenance therapy.

Study context

Population
Patients with resistant lupus nephritis (LN) (failed initial induction therapy or severe relapse after remission), single center in Mumbai
Participants
24 patients
Outcome
KDIGO criteria outcomes: renal response (complete and partial), disease progression, relapses and infections
Methodological detailssingle-centre, real-world
  • Single-centre
  • Real-world

Main finding

As reported in the abstract

Renal response · 6 months
GroupValueComplete responsePartial response
Re-RTX91.7%20.8%70.8%

Re-RTX

Value91.7%
Complete response20.8%
Partial response70.8%

Observational data: associations, not effects.

Further findings

Renal response (complete and partial) · 12 months

Maintained renal response
58.3%
Complete response
25%
Partial response
33.3%

Relapse · within a year

Approximately one-third of patients relapsed within a year

RTX maintenance, Regimen-1 (500 mg every 6 months)

Partial response
43% (3/7)
Relapse
57% (4/7)
  • Fourteen patients (58.3%) continued RTX maintenance therapy with two different treatment regimens

RTX maintenance, Regimen 2 (1 g dose per year) · 6 months

Complete response
28.5% (2/7)
Partial response
71.5% (5/7)
No relapses at 6 months

Adverse renal outcomes (progression to advanced chronic kidney disease (CKD) or end-stage renal disease (ESRD)) · median follow-up of 29 months

Adverse renal outcomes
29.16%

Safety

OutcomeValues
Infection prevalenceComparable to the existing dataRe-RTX 16%

Original publication

Rituximab as add-on therapy in patients with resistant lupus nephritis who have failed induction or maintenance therapy with other agents: A real-world experience from a single center in Mumbai. Lupus. Published 4 December 2023. doi:10.1177/09612033231219354

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