Neurology:免疫检查点抑制剂治疗相关神经肌病的特征及预后

2018-08-13 zhangfan MedSci原创

研究认为免疫检查点抑制剂相关肌炎具有明显的同质性和独特的临床病理特征,扩大了肿瘤炎症性肌病疾病分类学谱,停止PD-1药物并接受糖皮质激素治疗可改善患者预后

近日研究人员就免疫检查点抑制剂(ICIs)治疗人群肌炎(irMyositis)的临床病理特征及预后情况进行了考察。

研究收集了2015年1月至2017年7月,巴黎和柏林irMyositis患者的临床表现和肌肉组织学相关资料,包括主要组织相容性复合体I (MHC-I)、C5b-9、CD3、CD4、CD8、CD 20、CD 68、程序性死亡受体-1 (PD-1)、程序性死亡配体1(PD-L)、PD-L2免疫组化染色数据。

10名转移癌患者出现irMyositis,平均年龄73岁,平均免疫检查点抑制剂治疗时间48周,其中6人接受Nivolumab治疗,1人接受Pembrolizumab,1人接受Durvalumab,2人接受Nivolumab-Ipilimumab联合治疗。ICI初始治疗到肌炎确诊平均时间25天。临床表现以急性或亚急性肌痛(8例),以及肢带(7例)、轴向(7例)、动眼神经(7例)无力,4名患者有心肌炎表现。所有患者均表现出肌酸激酶水平上升(平均为2668U/L),但抗乙酰胆碱受体和肌炎相关抗体呈阴性。肌电图证实了患者病情。肌肉活检持续可见多灶性肌纤维坏死、肌间质MHC-I和内膜炎症,主要由表达PD-L1的CD 68细胞和表达PD-1的CD8细胞组成。所有患者停止ICI治疗,9例患者接受免疫抑制治疗后临床症状明显改善。

研究认为免疫检查点抑制剂相关肌炎具有明显的同质性和独特的临床病理特征,扩大了肿瘤炎症性肌病的疾病分类学谱,停止PD-1药物并接受糖皮质激素治疗可改善患者预后。

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    2019-02-24 jklm09
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    2018-08-28 yinhl1978
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