Lupus & antiphospholipid syndrome

Determinants of neuropsychiatric flares in patients with systemic lupus erythematosus: results from five phase III trials of belimumab

Rheumatology (Oxford)Published Post hoc pooled analysis of five phase III randomised trials of belimumab

Authors' conclusion

Male sex, NPSLE history, and NP damage were strong determinants of impending NPSLE flare. No clear protection or predisposition was conferred from add-on belimumab.

Study context

Population
Patients with active SLE yet no ongoing severe NPSLE (baseline neuropsychiatric (NP) BILAG A excluded), from BLISS-52, BLISS-76, BLISS-NEA, BLISS-SC and EMBRACE
Participants
3,638 patients5 phase III trials
Comparison
Determinants of NPSLE flare in patients receiving non-biologic standard therapy plus belimumab or placebo
Outcome
NPSLE flare, defined as a new NP BILAG A or B
Methodological detailsCox regression, multivariable analysis, subgroup analysis (baseline NP BILAG E)
  • Cox regression
  • Multivariable analysis
  • Subgroup analysis (baseline NP BILAG E)

Pooled result

As reported in the abstract

Determinants of NPSLE flare (multivariable Cox)
Hazard ratio (95% CI)P value
Male sex
2.37(1.31–4.28)
P = 0.004
Baseline NP BILAG B-D
5.91(3.86–9.06)
P < 0.001
Increasing SDI scores
1.35(1.21–1.50)
P < 0.001
NPSLE flares documented
105 (2.9%)

Further pooled results

NPSLE flare by SLICC/ACR Damage Index (SDI) domain (NP damage)

HR (95% CI)P value
NP damage3.25 (2.72–3.88)P < 0.001
Cognitive impairment14.29 (9.22–22.14)P < 0.001
Transverse myelitis21.89 (5.40–88.72)P < 0.001
Neuropathy8.87 (5.59–14.09)P < 0.001

De novo NPSLE flare (subgroup with baseline NP BILAG E)

HR (95% CI)P value
Male sex3.26 (1.51–7.04)P = 0.003

Original publication

Determinants of neuropsychiatric flares in patients with systemic lupus erythematosus: results from five phase III trials of belimumab. Rheumatology (Oxford). Published 25 May 2023. doi:10.1093/rheumatology/kead249

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