Lupus & antiphospholipid syndrome

Low-dose belimumab reduced risk of flares in patients with systemic lupus erythematosus: a multicentre, randomised, double-blind, placebo-controlled trial

Ann Rheum DisPublished Randomised controlled trial

  • terminated prematurely
  • Terminated prematurely on 10 April 2022 when Renji Hospital became a COVID-19 referral centre during the Shanghai lockdown

Authors' conclusion

Treatment with low-dose belimumab helped reduce the risks of disease flares in Chinese patients with systemic lupus erythematosus at low disease activity.

Study context

Population
Patients with SLE at low disease activity (SELENA-SLEDAI ≤6, no A and ≤1 B on BILAG, prednisone ≤20 mg/d at screening)follow-up 31 ± 16.1 weeks
Participants
116 vs 115
Comparison
IV low-dose belimumab 120 mg vs placebo
  • Belimumabn = 116
  • Placebon = 115reference
Primary endpoint
Disease flares within 52 weeks
Follow-up
52 weeks
Methodological detailsmulticentre, double-blind, placebo-controlled
  • Multicentre
  • Double-blind
  • Placebo-controlled

Primary result

As reported in the abstract

Disease flares
Difference (95% CI)P value
Placebovs Belimumab
11.3%(1.8%–20.9%)
P = 0.012
Hazard ratio (95% CI)P value
Belimumabvs PlaceboKaplan-Meier cumulative flare rates
0.38(0.17–0.83)
P = 0.011

Further findings

OutcomeBelimumabPlaceboP value
Change in SELENA-SLEDAI0.62 ± 2.140.12 ± 2.80P = 0.009
Directionreducedincreased

GC-sparing effect: Δprednisone from baseline

Comparable GC-sparing effects, Δprednisone from baseline (belimumab vs placebo, as printed)
−1.55 ± 10.11 mg/d vs −0.91 ± 7.43 mg/d, P = .075

Safety

Any AEs

Any AEs comparable (belimumab vs placebo, as printed)
61.2% vs 64.3%

Severe AEs

Severe AEs in the 2 groups, respectively (belimumab, placebo)
4 (3.4%) and 6 (5.2%)

Original publication

Low-dose belimumab reduced risk of flares in patients with systemic lupus erythematosus: a multicentre, randomised, double-blind, placebo-controlled trial. Ann Rheum Dis. Published 6 November 2025. doi:10.1016/j.ard.2025.10.010

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