Vasculitis & polymyalgia rheumatica

Risk factors of serious infections in patients with large-vessel vasculitis after the approval of tocilizumab in 2017: a retrospective nested case-control study using the Japanese health insurance database

Arthritis Res TherPublished Nested case-control study

Study context

Population
Patients with large-vessel vasculitis (LVV) (TAK and giant cell arteritis (GCA)) in a Japanese administrative claims database, April 2008 to July 2023
Participants
1,856 vs 2,149
Comparison
Serious infections (SI) cases vs matched controls, within TAK and GCA cohorts
  • TAKn = 1,856
  • GCAn = 2,149
Outcome
Risk factors of serious infections (SI; infection-related hospitalization)
Methodological detailsretrospective, administrative claims database, up to 5 controls per case matched on sex, age, days of follow-up and calendar year, conditional logistic regression
  • Retrospective
  • Administrative claims database
  • Up to 5 controls per case matched on sex, age, days of follow-up and calendar year
  • Conditional logistic regression

Main finding

As reported in the abstract

Risk factors of SI (aOR)

Observational data: associations, not effects.

Further findings

Respiratory tract was the most frequent site of infection

Original publication

Risk factors of serious infections in patients with large-vessel vasculitis after the approval of tocilizumab in 2017: a retrospective nested case-control study using the Japanese health insurance database. Arthritis Res Ther. Published 28 February 2026. doi:10.1186/s13075-026-03774-1

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