检验医学 ›› 2020, Vol. 35 ›› Issue (10): 1040-1042.DOI: 10.3969/j.issn.1673-8640.2020.10.017

• 临床应用研究·论著 • 上一篇    下一篇

95例意义未明的单克隆丙种球蛋白血症实验室特征分析

林孝怡, 卢洁, 施新明()   

  1. 上海交通大学医学院附属瑞金医院检验科,上海 200025
  • 收稿日期:2020-04-10 出版日期:2020-10-30 发布日期:2020-11-12
  • 作者简介:null

    作者简介:林孝怡,男,1981年生,硕士,主管技师,主要从事临床免疫学检验工作。

Laboratory determination characteristic of 95 patients with monoclonal gammopathy of undetermined significance

LIN Xiaoyi, LU Jie, SHI Xinming()   

  1. Department of Clinical Laboratory,Ruijin Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai 200025,China
  • Received:2020-04-10 Online:2020-10-30 Published:2020-11-12

摘要:

目的 对意义未明的单克隆丙种球蛋白血症(MGUS)的实验室特征进行分析。方法 回顾性分析95例MGUS患者的年龄、性别、M蛋白类型及含量。结果 95例MGUS患者中IgG型63例,血清M蛋白水平为5.2(2.6~8.6)g/L,κ轻链/λ轻链比值(简称κ/λ比值)为2.2(0.7~4.2);IgA型22例,血清M蛋白水平为4.9(3.2~8.6)g/L,κ/λ比值为1.7(1.1~3.0);IgM型8例,血清M蛋白水平为5.1(4.2~6.9)g/L,κ/λ比值为1.6(0.9~3.4);此外,还有1例双克隆型和1例轻链型。95例患者血清M蛋白水平为6.3 g/L,其中7例M蛋白≥15 g/L。各亚型患者年龄、性别、血清M蛋白水平及κ/λ比值差异均无统计学意义(P>0.05)。95例MGUS患者中有2例1年内转为多发性骨髓瘤(MM),其中1例为轻链型、1例为IgGλ型;分别有1例IgGκ型和IgMκ型转为冒烟型MM和冒烟型华氏巨球蛋白血症。结论 IgG型是MGUS最常见的免疫球蛋白类型,其次为IgA型。临床应进一步规范MGUS患者的危险分层并随访,使高危患者可在疾病进展早期得到诊断和治疗。

关键词: M蛋白, 分型, 意义未明的单克隆丙种球蛋白血症

Abstract:

Objective To study the laboratory determination characteristic of 95 patients with monoclonal gammopathy of undetermined significance(MGUS). Methods Totally,95 patients with MGUS were enrolled. The age and sex were recorded,and the amount and subtype of monoclonal protein were determined.Results The monoclonal immunoglobulin was IgG in 63 cases,IgA in 22 cases,IgM in 8 cases,biclonal in 1 case and light chain in 1 case. The amounts of monoclonal protein were 5.2(2.6~8.6)g/L in IgG MGUS,4.9(3.2~8.6)g/L in IgA MGUS and 5.1(4.2~6.9)g/L in IgM MGUS,respectively. The κ/λ ratios were 2.2(0.7~4.2) in IgG MGUS,1.7(1.1~3.0) in IgA MGUS and 1.6(0.9~3.4) in IgM MGUS,respectively. The average amount of monoclonal protein was 6.3 g/L in 95 patients,and 7 cases had a concentration of ≥15 g/L. There was no statistical significance in patients' age,sex,monoclonal protein amount and κ/λ ratios in each subtype(P>0.05). Two cases(1 case of light chain type and 1 case of IgG λ) transformed into multiple myeloma(MM),and one case transformed into smoldering myeloma(IgG κ) and one case transformed into smoldering Waldenström macroglobulinemia(IgM κ),respectively,in 1 year. Conclusions IgG MGUS is the most common subtype,followed by IgA MGUS. It should pay attention to identify high-risk populations of MGUS and standardize their follow-up to make them be diagnosed and treated in the early stage of disease progression.

Key words: Monoclonal protein, Classification, Monoclonal gammopathy of undetermined significance

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