Spondyloarthritis & psoriatic arthritis

Impact of biologic class and treatment line on psoriatic arthritis risk in psoriasis: a population-based cohort study

RMD OpenPublished Population-based cohort study

Main finding · Incident PsA, first-line biologic therapyResult — go to the resultHazard ratio 0.13 95% CI 0.02–0.96

Authors' conclusion

IL-17 inhibitor therapy was significantly associated with a reduced risk of incident PsA compared with TNF inhibitors.

Study context

Population
Patients with psoriasis initiating biologic therapy between 2002 and 20221,246 received second-line biologics
Participants
2,819 patients
Exposure
Biologic classes vs Tumor Necrosis Factor (TNF) inhibitors, first-line and second-line
Outcome
Incident PsA
Methodological detailsmultivariable Cox regression, Kaplan-Meier survival analysis
  • Multivariable Cox regression
  • Kaplan-Meier survival analysis

Main finding

Incident PsA, first-line biologic therapy

Hazard ratio

0.13

95% CI 0.02–0.96

P = 0.045

anti-IL-23p19vs TNF inhibitors
HR 0.13 (95% CI 0.02–0.96); P = 0.045

As reported in the abstract

Developed psoriatic arthritis (PsA) (first-line cohort)
400 (14.2%)

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)P value
Incident PsA, second-line biologic therapyIL-17 inhibitorsvs TNF inhibitors0.37 (0.16–0.85)P = 0.019
Incident PsA, second-line biologic therapyanti-IL-12/23vs TNF inhibitors0.14 (0.02–1.05)P = 0.056
Incident PsA, second-line biologic therapyanti-IL-23p19vs TNF inhibitors0.46 (0.20–1.07)P = 0.070
Incident PsA, second-line biologic therapy — Developed PsA (second-line cohort)
125 (10.0%)

Original publication

Impact of biologic class and treatment line on psoriatic arthritis risk in psoriasis: a population-based cohort study. RMD Open. Published 7 May 2026. doi:10.1136/rmdopen-2025-006687

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.