Pediatric rheumatology

Real-world use and outcomes of belimumab in childhood-onset lupus: A single-center retrospective study

LupusPublished Retrospective cohort study

Authors' conclusion

In our cohort of pediatric patients with lupus and moderate disease activity treated with belimumab for ≥12 months, daily oral glucocorticoid doses were significantly lower 6 and 12 months after belimumab initiation than baseline. Use in patients with active nephritis was uncommon.

Study context

Population
Children and young adults with cSLE who received ≥ 1 dose of belimumab, single large pediatric rheumatology center11 continued ≥12 months
Participants
21 children
Exposure
Oral GC doses and SLEDAI-2K at baseline, 6 and 12 months after belimumab initiation
Outcome
Prednisone-equivalent daily oral GC doses and SLEDAI-2K scores in patients continuing belimumab for a year
Follow-up
6 and 12 months
Methodological detailssingle-centre, repeated measures one-way ANOVA
  • Single-centre
  • Repeated measures one-way ANOVA

Main finding

As reported in the abstract

Daily oral prednisone dose (median [IQR]), patients continuing ≥12 months · baseline, 6 and 12 months

P = 0.037

Observational data: associations, not effects.

Further findings

Median

OutcomeBaseline6 months12 monthsP value
SLEDAI-2K score (median [IQR]), patients continuing ≥12 months · baseline, 6 and 12 monthsBaseline vs 12 months · across baseline, 6 and 12 months8 (IQR 5.5–10.5)6 (IQR 3.5–10)6 (IQR 6–8.5)P = 0.548

Belimumab persistence

Continued ≥6 months
13 (62%)
Continued ≥12 months
11 (52%)

Baseline characteristics at belimumab initiation

Median disease duration, months [IQR]
30.8 [21.0-79.1]
Taking an antimalarial
100%
On oral GC
81%
On ≥1 conventional DMARD
91%

Original publication

Real-world use and outcomes of belimumab in childhood-onset lupus: A single-center retrospective study. Lupus. Published 6 July 2023. doi:10.1177/09612033231187752

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