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<p>This post hoc analysis of a phase III clinical trial (NCT04333771) was aimed at evaluating the effect of ivarmacitinib (SHR0302) on joint symptoms in small and large joints and imaging changes in patients with moderate-to-severe rheumatoid arthritis (RA). Patients were randomized to receive 24-week ivarmacitinib 4&#xa0;mg (<i>n</i> = 189), ivarmacitinib 8&#xa0;mg (<i>n</i> = 189), or placebo (<i>n</i> = 188). At week (W) 24, patients receiving placebo switched to ivarmacitinib 4&#xa0;mg; others continued initial regimens until W52. Changes in swollen joint count (SJC) and tender joint count (TJC) in small and large joints from baseline, and imaging changes from baseline to W24, were evaluated. Compared with the placebo group, ivarmacitinib 4&#xa0;mg and 8&#xa0;mg groups demonstrated greater reductions in SJC and TJC in small and large joints over the initial 24&#xa0;weeks and showed sustained improvement throughout the treatment. Ivarmacitinib 4&#xa0;mg and 8&#xa0;mg groups showed greater reductions in TJC in small joints versus large joints at several time points, with especially pronounced effects in the ivarmacitinib 8&#xa0;mg group from W20 to W52. From W24 to W52, patients switched to ivarmacitinib 4&#xa0;mg exhibited sufficient improvement in SJC and TJC of small and large joints, with greater reductions in TJC in small joints versus large joints. Ivarmacitinib 4&#xa0;mg and 8&#xa0;mg groups showed greater reductions in bone erosion and synovitis scores under MRI scanning from baseline to W24 versus the placebo group. Ivarmacitinib improves swelling and tenderness in small and large joints in patients with moderate-to-severe RA, with superior effects on tenderness in small joints.</p>

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Effect of ivarmacitinib on swelling and tenderness in small and large joints and imaging changes in patients with moderate-to-severe RA: a post hoc analysis of a phase III clinical trial

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Yuxiang Han,
  • Meng Ding,
  • Shaoxin Cui,
  • Yu Tian,
  • Yushu Yang,
  • Xuying Liu,
  • Lin Yang,
  • Xiaoping Wang,
  • Hongtao Jin,
  • Huifang Guo,
  • Haixue Dai,
  • Shanshan Yin,
  • Tan Lu

摘要

This post hoc analysis of a phase III clinical trial (NCT04333771) was aimed at evaluating the effect of ivarmacitinib (SHR0302) on joint symptoms in small and large joints and imaging changes in patients with moderate-to-severe rheumatoid arthritis (RA). Patients were randomized to receive 24-week ivarmacitinib 4 mg (n = 189), ivarmacitinib 8 mg (n = 189), or placebo (n = 188). At week (W) 24, patients receiving placebo switched to ivarmacitinib 4 mg; others continued initial regimens until W52. Changes in swollen joint count (SJC) and tender joint count (TJC) in small and large joints from baseline, and imaging changes from baseline to W24, were evaluated. Compared with the placebo group, ivarmacitinib 4 mg and 8 mg groups demonstrated greater reductions in SJC and TJC in small and large joints over the initial 24 weeks and showed sustained improvement throughout the treatment. Ivarmacitinib 4 mg and 8 mg groups showed greater reductions in TJC in small joints versus large joints at several time points, with especially pronounced effects in the ivarmacitinib 8 mg group from W20 to W52. From W24 to W52, patients switched to ivarmacitinib 4 mg exhibited sufficient improvement in SJC and TJC of small and large joints, with greater reductions in TJC in small joints versus large joints. Ivarmacitinib 4 mg and 8 mg groups showed greater reductions in bone erosion and synovitis scores under MRI scanning from baseline to W24 versus the placebo group. Ivarmacitinib improves swelling and tenderness in small and large joints in patients with moderate-to-severe RA, with superior effects on tenderness in small joints.