评估 Batoclimab 在格雷夫斯病 (GD) 参与者中的安全性和有效性的研究

实验性的：巴妥单抗

参与者将接受 batoclimab 680 毫克 (mg) 皮下 (SC) 每周 (QW) 注射，持续 12 周，然后接受 340 mg SC QW，持续 12 周。

药品：IMVT-1401（巴托单抗）

Batoclimab 是一种全人源抗新生儿片段可结晶受体 (FcRn) 单克隆抗体。

其他名称：

• IMVT-1401

Percentage of Participants Who Achieved Normalization of Free Triiodothyronine (FT3) and Free Thyroxine (FT4), or Have FT3 and/or FT4 Below the Lower Limit of Normal (LLN) at Week 24 Without Increase in ATD Dose Compared to Baseline

Antithyroid drug therapy was indicated as a first-line treatment for GD by effectively controlling hyperthyroidism. FT3 and FT4 were prespecified biomarkers of GD. Fasting blood samples were collected to assess the percentage of participants who achieved normalization of FT3 and FT4 or levels below the LLN without increase in ATD dose compared to baseline. The change in the ATD dose was compared only between baseline and Week 24 to determine if there was an increase. Percentages were estimated using the 2-sided Clopper-Pearson Exact method, with corresponding 95% confidence intervals. Participants who, at Week 24, without an increase in ATD dose compared with baseline, had achieved normalization of FT3 and FT4, or had FT3 and/or FT4 below the lower limit of normal (LLN), were considered responders. Participants with missing Week 24 assessments were considered nonresponders.

Percentage of Participants Who Achieved Normalization of FT3 and FT4 With ATD Dose ≤50% of the Baseline ATD Dose at Week 24

Antithyroid drug therapy was indicated as a first-line treatment for GD by effectively controlling hyperthyroidism. FT3 and FT4 were prespecified biomarkers of GD. Fasting blood samples were collected to assess the percentage of participants who achieved normalization of FT3 and FT4 with ATD dose ≤50% of the baseline ATD. The change in the ATD dose was compared only between baseline and Week 24 to determine if there was at least a 50% reduction. Percentages were estimated using the two-sided Clopper-Pearson exact method, with corresponding 95% confidence intervals.

Percentage of Participants Who Are Off ATD Treatment and Achieved Normalization of FT3 and FT4, or Had FT3 and/or FT4 Below the LLN at Week 24

Antithyroid drug therapy was indicated as a first-line treatment for GD by effectively controlling hyperthyroidism. FT3 and FT4 were prespecified biomarkers of GD. Fasting blood samples were collected to assess the percentage of participants who achieved normalization of FT3 and FT4 or levels below the LLN. Responders were defined as participants who were off ATD therapy at Week 24. Percentages were estimated using the two-sided Clopper-Pearson exact method, with corresponding 95% confidence intervals.