title: [The role of the immunohistochemistry for hMLH1 and hMSH2 with detection of microsatellite instability to identify the kindreds with hereditary nonpolyposis colorectal cancer].
abstract: OBJECTIVE
  To investigate the specificity and sensitivity of the immunohistochemistry for hMLH1 and hMSH2 with detection of microsatellite instability (MSI) to identify the kindreds with hereditary nonpolyposis colorectal cancer and to analyse its value in clinical practice.
  
  
  METHODS
  Specimens of 16 cases with HNPCC and 16 cases with sporadic colorectal cancer were detected by immunostaining with hMLH1 and hMSH2 and MSI was also detected.
  
  
  RESULTS
  The specificity and sensitivity of the immunohistochemistry for hMLH1 and hMSH2 were 91.7% and 87.5% respectively. The specificity and sensitivity of MSI were 100% and 75.0%. By combining two methods, the specificity and sensitivity were 91.7% and 93.8% respectively.
  
  
  CONCLUSIONS
  By combination of the immunohistochemistry for hMLH1 and hMSH2 and detection of MSI to identify the kindreds with HNPCC, the specificity and sensitivity are improved which is better than to use either of them alone. And it is very easy and cheap that it can be used in clinics.
authors.affiliation: Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
authors.forename: Hei-ying
authors.initials: HY
authors.lastname: Jin
authors.forename: Long
authors.initials: L
authors.lastname: Cui
authors.forename: Rong-gui
authors.initials: RG
authors.lastname: Meng
authors.forename: Fei
authors.initials: F
authors.lastname: Liu
authors.forename: Yu-di
authors.initials: YD
authors.lastname: Yan
authors.forename: Yi-jiang
authors.initials: YJ
authors.lastname: Ding
authors.forename: Hang
authors.initials: H
authors.lastname: Yao
authors.forename: Chuan-gang
authors.initials: CG
authors.lastname: Fu
authors.forename: De-hong
authors.initials: DH
authors.lastname: Yu
mesh_terms: D048868:Adaptor Proteins, Signal Transducing; D000328:Adult; D000368:Aged; D002352:Carrier Proteins; D003123:Colorectal Neoplasms, Hereditary Nonpolyposis / Q000235:genetics*; D004268:DNA-Binding Proteins / Q000032:analysis*; D005260:Female; D042822:Genomic Instability; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D018895:Microsatellite Repeats; D008875:Middle Aged; D000070957:MutL Protein Homolog 1; D051718:MutS Homolog 2 Protein; D009363:Neoplasm Proteins / Q000032:analysis*; D009687:Nuclear Proteins; D011518:Proto-Oncogene Proteins / Q000032:analysis*; D012680:Sensitivity and Specificity
chemical_list: D048868:Adaptor Proteins, Signal Transducing; D002352:Carrier Proteins; D004268:DNA-Binding Proteins; C501486:MLH1 protein, human; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D011518:Proto-Oncogene Proteins; C497172:MSH2 protein, human; D000070957:MutL Protein Homolog 1; D051718:MutS Homolog 2 Protein