Spondyloarthritis & psoriatic arthritis

Long-term safety of Ixekizumab in adults with psoriasis, psoriatic arthritis, or axial spondyloarthritis: a post-hoc analysis of final safety data from 25 randomized clinical trials

Arthritis Res TherPublished Post-hoc integrated safety analysis of 25 randomised clinical trials

Authors' conclusion

In this integrated safety analysis, consisting of over 22,000 PY of exposure, the long-term safety profile of IXE was found to be consistent with previous, earlier reports, with no new safety signals identified.

Study context

Population
Adults with psoriasis, psoriatic arthritis (PsA) or axial spondyloarthritis (axSpA) (including ankylosing spondylitis (AS) and non-radiographic axial spondyloarthritis (nr-axSpA)) who received any dose of ixekizumab in 25 randomized clinical trials (RCTs), through March 202222,371.1 patient-years (PY) Ixekizumab (IXE) exposure
Participants
6,892 / 1,401 / 932
Comparison
PsO vs PsA vs axSpA
  • PsOn = 6,892
  • PsAn = 1,401
  • axSpAn = 932
Primary endpoint
Exposure-adjusted incidence rates (IRs) per 100 PY of TEAEs, serious adverse events (SAEs) and selected adverse events (AEs) of interest
Methodological detailspooled studies (17 PsO, 4 PsA, 4 axSpA), exposure-adjusted incidence rates per 100 PY
  • Pooled studies (17 PsO, 4 PsA, 4 axSpA)
  • Exposure-adjusted incidence rates per 100 PY

Primary result

As reported in the abstract

SAEs (IR per 100 PY)
GroupValueIR
PsO969 events5.4
PsA134 events6.0
axSpA101 events4.8

Value

PsO969 events
PsA134 events
axSpA101 events

IR

PsO5.4
PsA6.0
axSpA4.8

Further findings

OutcomePsOPsAaxSpA
Deaths
IR0.20.30.1
Deaths — Total deaths
45

Safety

Nasopharyngitis, most common TEAE (IR per 100 PY)

Discontinuation of IXE due to AE (IR per 100 PY)

Injection site reactions (IR per 100 PY)

Candida (IR per 100 PY)

Adjudicated inflammatory bowel disease (IR per 100 PY)

OutcomePsOPsAaxSpA
TEAEs over time (IR per 100 PY, first to last interval)88.9 to 63.2 per 100 PY87 to 67.3 per 100 PY82.1 to 55.4 per 100 PY
Intervalyear 0-1 to 4-5year 0-1 to 2-3year 0-1 to > = 2
  • Adjudicated inflammatory bowel disease (IR per 100 PY): ≤ 0.8 across indications

Treatment-emergent adverse events (TEAEs) over time (IR per 100 PY, first to last interval)

TEAEs did not increase during IXE exposure

Depression, MACE (cerebro-cardiovascular) and malignancies (IR per 100 PY)

≤ 1.6 across all indications

Original publication

Long-term safety of Ixekizumab in adults with psoriasis, psoriatic arthritis, or axial spondyloarthritis: a post-hoc analysis of final safety data from 25 randomized clinical trials. Arthritis Res Ther. Published 12 February 2024. doi:10.1186/s13075-023-03257-7

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