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Dimethyl fumarate treatment shifts the immune environment toward an anti-inflammatory cell profile while maintaining protective humoral immunity
Multiple Sclerosis Journal ( IF 5.8 ) Pub Date : 2020-07-27 , DOI: 10.1177/1352458520937282
Erin E Longbrake 1 , Yang Mao-Draayer 2 , Mark Cascione 3 , Tomasz Zielinski 4 , Eris Bame 5 , David Brassat 5 , Chongshu Chen 5 , Shivani Kapadia 5 , Jason P Mendoza 5 , Catherine Miller 5 , Becky Parks 5 , Diana Xing 5 , Derrick Robertson 6
Affiliation  

BACKGROUND Delayed-release dimethyl fumarate (DMF) demonstrates sustained efficacy and safety for relapsing forms of MS. Absolute lymphocyte count (ALC) is reduced initially, then stabilizes on treatment. OBJECTIVE PROCLAIM, a 96-week, prospective, open-label, phase 3b study, assessed lymphocyte subsets and immunoglobulin (Ig) levels during 48 and 96 weeks (W) of DMF treatment. METHODS Patients received 240 mg DMF BID. Endpoints: lymphocyte subset count changes (primary); Ig isotypes and ALC changes (secondary); adverse events and relationship between ALC changes and ARR/EDSS (exploratory); and neurofilament assessment (ad hoc). RESULTS Of 218 patients enrolled, 158 (72%) completed the study. Median ALC decreased 39% from baseline to W96 (BL-W96), stabilizing above the lower limit of normal (baseline: 1.82 × 109/L; W48: 1.06 × 109/L; W96: 1.05 × 109/L). CD4 + and CD8 + T cells correlated highly with ALC from BL-W96 (p < 0.001). Relative to total T cells, naive CD4 + and CD8 + T cells increased, whereas CD4 + and CD8 + central and effector memory T cells decreased. Total IgA, IgG, IgM, and IgG1-4 subclass levels remained stable. Adverse event rates were similar across ALC subgroups. ARR, EDSS, and neurofilament were not correlated with ALCs. CONCLUSION Lymphocyte decreases with DMF were maintained over treatment, yet immunoglobulins remained stable. No increase in infection incidence was observed in patients with or without lymphopenia. SUPPORT Biogen.

中文翻译:

富马酸二甲酯治疗将免疫环境转变为抗炎细胞谱,同时保持保护性体液免疫

背景延迟释放的富马酸二甲酯 (DMF) 证明了对复发型 MS 的持续有效性和安全性。绝对淋巴细胞计数 (ALC) 最初会减少,然后在治疗后稳定下来。目标声明是一项为期 96 周的前瞻性、开放标签、3b 期研究,评估了 DMF 治疗 48 周和 96 周 (W) 期间的淋巴细胞亚群和免疫球蛋白 (Ig) 水平。方法 患者接受 240 毫克 DMF BID。终点:淋巴细胞亚群计数变化(主要);Ig 同种型和 ALC 变化(次要);不良事件和 ALC 变化与 ARR/EDSS 之间的关系(探索性);和神经丝评估(临时)。结果 在纳入的 218 名患者中,158 名 (72%) 完成了研究。ALC 中位数从基线到第 96 周(BL-W96)下降 39%,稳定在正常下限以上(基线:1.82 × 109/L;W48:1.06 × 109/L;W96:1。05 × 109/L)。CD4 + 和 CD8 + T 细胞与来自 BL-W96 的 ALC 高度相关(p < 0.001)。相对于总 T 细胞,初始 CD4 + 和 CD8 + T 细胞增加,而 CD4 + 和 CD8 + 中枢和效应记忆 T 细胞减少。总 IgA、IgG、IgM 和 IgG1-4 亚类水平保持稳定。ALC 亚组的不良事件发生率相似。ARR、EDSS 和神经丝与 ALC 无关。结论 DMF 引起的淋巴细胞减少在治疗期间保持不变,但免疫球蛋白保持稳定。在有或没有淋巴细胞减少的患者中,没有观察到感染发生率增加。支持百健。IgG、IgM 和 IgG1-4 亚类水平保持稳定。ALC 亚组的不良事件发生率相似。ARR、EDSS 和神经丝与 ALC 无关。结论 DMF 引起的淋巴细胞减少在治疗期间保持不变,但免疫球蛋白保持稳定。在有或没有淋巴细胞减少的患者中,没有观察到感染发生率增加。支持百健。IgG、IgM 和 IgG1-4 亚类水平保持稳定。ALC 亚组的不良事件发生率相似。ARR、EDSS 和神经丝与 ALC 无关。结论 DMF 引起的淋巴细胞减少在治疗期间保持不变,但免疫球蛋白保持稳定。在有或没有淋巴细胞减少的患者中,没有观察到感染发生率增加。支持百健。
更新日期:2020-07-27
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