August 2025

Effectiveness of ixekizumab in 709 real-world patients with axial spondyloarthritis and psoriatic arthritis: a nationwide cohort study

RMD Open 2025;11:e005806 doi: 10.1136/rmdopen-2025-005806

In this nationwide observational study, ixekuzumab was mainly used in patients with axSpA and PsA who had previously failed multiple b/tsDMARDs, including other IL-17 inhibitors. Although prior IL-17 treatment was associated with increased risk of withdrawal in both groups, the relatively high retention rates and improvements in all disease outcomes suggest ixekizumab as a viable option for challenging patients with multiple b/tsDMARD failures.

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July 2025

Ixekizumab and malignant neoplasms A pooled analysis of data from 25 randomized clinical trials

Merola et al. JAMA Dermatol 2025; 9:e252056

Merola et al. showed that the safety profile of ixekizumab (IXE) supports its long-term use in patients with PsO, PsA, or axSpA, without an increased risk for malignant neoplasm development. Merola et al. investigated the incidence rates of malignant neoplasms among patients with PsO, PsA, or axSpA who underwent long-term treatment with IXE, an IL- 17A antagonist.

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June 2025

Risk of new-onset inflammatory bowel disease in psoriasis patients treated with five different interleukin inhibitors: a systematic review and meta-analysis

Front Immunol 2025;16:1594998 doi: 10.3389/fimmu.2025.1594998

Zhang et al. observed that, compared to the control group, ixekizumab was associated with an increased risk of new-onset IBD in psoriasis patients, and that there is insufficient evidence to confirm that ustekinumab, bimekizumab, secukinumab, and brodalumab significantly increase the risk of new-onset IBD. Zhang et al. evaluated the risk of new-onset IBD in psoriasis patients treated with five IL inhibitors (bimekizumab, ixekizumab, secukinumab, brodalumab, and ustekinumab), providing insights to inform clinical decision-making. Additionally, compared to the control group, no significant difference was observed in the risk of diarrhoea as an AE.

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May 2025

The effect of ixekizumab treatment on MRI sacroiliac joint structural lesions in patients with radiographic axial spondyloarthritis: post-hoc analysis of a 52-week, randomised, placebo-controlled trial with an active reference arm

Lancet Rheumatol 2025;7: e314–22 DOI: 10.1016/S2665-9913(24)00312-6

Maksymowych et al. evaluated the effect of ixekizumab and adalimumab versus placebo over 52 weeks on structural lesions in sacroiliac joints assessed by MRI in patients naive to biological DMARDs with radiographic axSpA from the COAST-V study. The authors reported a decrease in erosion and increase in backfill at Week 16 with further reductions in erosion and increases in backfill occurring at Week 52 in patients receiving ixekizumab.

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