Rheumatoid arthritis

Comparison of retention of biologics in Japanese patients with elderly-onset rheumatoid arthritis—the ANSWER cohort study

Rheumatology (Oxford)Published Retrospective cohort study

Main finding · Drug retention (adjusted)Result — go to the resultHazard ratio 0.38 95% CI 0.27–0.55

Authors' conclusion

In EORA patients, IL-6i and JAKi had longer retention and less discontinuation due to ineffectiveness than TNFi.

Study context

Population
Patients with elderly-onset RA (onset at age 60 or over) in a Japanese multicentre observational registry, 2015–2022treatment courses in 572 patients
Participants
835 patients
Exposure
Janus kinase inhibitors (JAKi), IL-6i and CTLA4-Ig vs TNF inhibitors (TNFi)
  • TNFin = 314reference
  • IL-6in = 175
  • CTLA4-Ign = 228
  • JAKin = 118
Outcome
Drug retention
Methodological detailsmulticentre, propensity score adjusted, observational registry
  • Multicentre
  • Propensity score adjusted
  • Observational registry

Main finding

Drug retention (adjusted)

Hazard ratio

0.38

95% CI 0.27–0.55

P < 0.01

IL-6ivs TNFi
HR 0.38 (95% CI 0.27–0.55); P < 0.01

As reported in the abstract

Observational data: associations, not effects.

Secondary outcomes

OutcomeHR (95% CI)P value
Discontinuation due to lack of effectivenessJAKivs TNFi0.38 (0.22–0.66)P < 0.01
Discontinuation due to lack of effectivenessIL-6ivs TNFi0.29 (0.19–0.46)P < 0.01

Discontinuation due to lack of effectiveness

CTLA4-Ig had a similar HR to TNFi

Safety

OutcomeHR (95% CI)P value
Discontinuation due to adverse events (adjusted)JAKivs TNFi2.86 (1.46–5.59)P < 0.01

Original publication

Comparison of retention of biologics in Japanese patients with elderly-onset rheumatoid arthritis—the ANSWER cohort study. Rheumatology (Oxford). Published 6 February 2024. doi:10.1093/rheumatology/keae081

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