国家药品监督管理局于2018年11月批准迈维宁® (注射用盐酸美法仑) 上市，用于多发性骨髓瘤患者造血干细胞移植前的高剂量预处理治疗，和不适合口服剂型治疗的多发性骨髓瘤患者的姑息治疗。迈维宁®是中国市场上唯一的注射用美法仑产品。
多发性骨髓瘤是一种恶性血液病，其特征在于骨髓中克隆浆细胞的异常增殖,和在血清或尿液中可检测到的单克隆免疫球蛋白的分泌。多发性骨髓瘤占血液系统恶性肿瘤的10-13％1,2，在西方国家，估计发病率为每10万人5.6例2。中国多发性骨髓瘤的估计发病率为每100,000人约2.0例3，估计年发病人数约为27,800人3。中国多发性骨髓瘤患者适合大剂量化疗联合自体造血干细胞移植的候选人数约为16,900 /年。 目前在中国接受造血干细胞移植的多发性骨髓瘤患者人数估计约为800 /年。大剂量化疗联合自体干细胞移植（ASCT）已被证明可提高多发性骨髓瘤患者的完全缓解率并延长中位总生存期，并被认为是符合移植要求患者的标准治疗方案1,3。ASCT的优选预处理方案是美法仑1。
1. S. Rajkumar, Mayo Clin Proc. 2016 January; 91(1): 101–119
2. A. Palumbo, N Engl J Med, 2011; 364: 1046-60
3. J. Lu, Blood Cancer Journal (2014) 4, e239; doi:10.1038/bcj.2014.55
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