Lupus & antiphospholipid syndrome

The influence of intrathecal injection of methotrexate and dexamethasone on neuropsychiatric systemic lupus erythematosus (neuropsychiatric SLE (NPSLE)): a retrospective cohort study of 386 patients with NPSLE

Arthritis Res TherPublished Retrospective cohort study

An erratum to this article was published (Arthritis Res Ther, 29 Apr 2023 ↗)

Authors' conclusion

Intrathecal treatment of methotrexate and dexamethasone was associated with a more favorable prognosis of NPSLE

Study context

Population
Hospitalized patients with NPSLE
Participants
386 patients147 propensity score-matched pairs
Exposure
Intrathecal MTX and dexamethasone vs no intrathecal treatment
  • Intrathecal treatmentn = 194
Outcome
Time free from NPSLE relapse or death
Methodological detailspropensity score-matched, multivariate logistic regression, Cox regression
  • Propensity score-matched
  • Multivariate logistic regression
  • Cox regression

Main finding

As reported in the abstract

Survival free from NPSLE relapse
  • Higher probability of survival and being free from NPSLE relapse with intrathecal treatment
  • Intrathecal treatment vs Control treatment: P = 0.042 by log-rank test
  • Intrathecal treatment vs Control treatment: P = 0.032 by log-rank test

Observational data: associations, not effects.

Further findings

Baseline SLEDAI-2K score

P < 0 .001

Methylprednisolone pulse therapy received

P < 0.001

Prognosis in subgroup with increased CSF protein
P < 0.001

Prognosis in subgroup with increased CSF protein

Positive influence of intrathecal treatment on prognosis

Original publication

The influence of intrathecal injection of methotrexate and dexamethasone on neuropsychiatric systemic lupus erythematosus (NPSLE): a retrospective cohort study of 386 patients with NPSLE. Arthritis Res Ther. Published 28 March 2023. doi:10.1186/s13075-023-03030-w

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