title: [Features of Immunophenotypes and Characteristics of Molecular Biology and Cellular Genetics of AML Patients with CD4 and CD7 Expression].
abstract: OBJECTIVE
  To explore the features of immunophenotypes and the characteristics of molecular biology and cellular genetics of AML patients with CD7 and CD4 expression.
  
  
  METHODS
  The immunophenotypical markers of AML cells were detected by multiple parameter flow cytometry; the expression of WT1, MDK, ETO, PML-RaRa and BCR-ABL were detected by RT-PCR; and cellular features were analyzed by R-band in 304 patients. The patients were divided into three groups according to their immunophenotypes: AML with CD7 expression (CD7 group), AML with CD4 expression(CD4 group) and AML without CD7 and CD4 expression (common AML group).
  
  
  RESULTS
  The expression rate and level of HLA-DR in CD7 group were higher than those in the common AML group, and the expression rate of CD33 and CD34 was higher than that in the other two groups. The expression rate and level of CD15, CD64 in the CD4 group were higher than those in the other 2 groups, and the expression rate and level of CD33 were higher than those in the common AML group. WT1 expression in the CD7 group was lower than that in the common AML group. PML-RaRa was not detected in the CD7 group. AML with co-expression of CD4 or CD7 showed more normal karyotype. (15;17) was not found in AML with CD7 expression.
  
  
  CONCLUSIONS
  AML cells with CD7 expression originate from precursor cells and are blocked in the early phase of hematological development; AML cells with CD4 expression originate from more mature stage of hematological devevelopment and with CD33, CD64 and CD15 high expression; AML cells with CD7 and CD4 expression are characterized by no-specific change of cellular genetics. According to the expression level and intesity of CD4 and CD7, and together with other specific lineage markers, the MRD in AML patients can be quantitatively detected.
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Tie-Qiang
authors.initials: TQ
authors.lastname: Liu
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Huang
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Yao
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Zhi-Qing
authors.initials: ZQ
authors.lastname: Liu
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Chang-Lin
authors.initials: CL
authors.lastname: Yu
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Jian-Hui
authors.initials: JH
authors.lastname: Qiao
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Qi-Yun
authors.initials: QY
authors.lastname: Sun
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Kai-Xun
authors.initials: KX
authors.lastname: Hu
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Ya-Jing
authors.initials: YJ
authors.lastname: Huang
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Yu-Fang
authors.initials: YF
authors.lastname: Li
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Bai
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Yu-Jing
authors.initials: YJ
authors.lastname: Sun
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Bing-Xia
authors.initials: BX
authors.lastname: Li
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Dong-Mei
authors.initials: DM
authors.lastname: Wang
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Hematology, The Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Guo
mesh_terms: D019011:Antigens, CD7; D015704:CD4 Antigens; D002452:Cell Count; D002871:Chromosome Banding; D005434:Flow Cytometry; D016044:Fusion Proteins, bcr-abl; D006684:HLA-DR Antigens; D006801:Humans; D016130:Immunophenotyping; D015470:Leukemia, Myeloid, Acute; D008967:Molecular Biology; D017452:Receptors, IgG; D063268:Sialic Acid Binding Ig-like Lectin 3
chemical_list: D019011:Antigens, CD7; C571163:CD33 protein, human; D015704:CD4 Antigens; D006684:HLA-DR Antigens; D017452:Receptors, IgG; D063268:Sialic Acid Binding Ig-like Lectin 3; D016044:Fusion Proteins, bcr-abl