title: Suspected HNPCC and Amsterdam criteria II: evaluation of mutation detection rate, an international collaborative study.
abstract: OBJECTIVE
  The Korean Hereditary Tumor Registry has proposed criteria for suspected hereditary nonpolyposis colorectal cancer (S-HNPCC criteria I and II) and confirmed their validity in an international collaborative study. The S-HNPCC criteria included families that did not fulfill the Amsterdam criteria, but in whom HNPCC was nevertheless strongly suspected. The S-HNPCC criteria was also revised accordingly since some S-HNPCC families now fullfil the revised Amsterdam criteria. The original Amsterdam criteria have recently been revised, including some extracolonic cancers. This study compared the mutation detection rates between the revised and previous Amsterdam and S-HNPCC criteria.
  
  
  METHODS
  Data on the mutational status of 393 HNPCC suspected families were collected from ten different institutes. Two hundred families were categorized into old S-HNPCC criteria (142 into criteria I and 58 into criteria II) and 193 families into Amsterdam criteria I.
  
  
  RESULTS
  Of the 142 old S-HNPCC criteria I families 24 fulfilled the Amsterdam criteria II as the data were reclassified according to the revised criteria, increasing the proportion of the families fulfilling the Amsterdam criteria by 12.4%. The mutation detection rate of the revised criteria was very little changed compared to the old criteria; 26% and 27% in the S-HNPCC criteria, and 50% and 52% in the Amsterdam criteria.
  
  
  CONCLUSIONS
  The mutation detection rate is hardly affected by the revision of the Amsterdam criteria although the population of patients fulfilling the criteria is increased. The value of revised S-HNPCC criteria is equivalent to that of as the old S-HNPCC criteria in selecting of candidate patients for genetic testing.
authors.affiliation: Laboratory of Cell Biology, Cancer Research Institute, Seoul National University College of Medicine, Korea. jgpark@plaza.snu.ac.kr
authors.forename: Jae-Gahb
authors.initials: JG
authors.lastname: Park
authors.forename: Hans F A
authors.initials: HF
authors.lastname: Vasen
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Park
authors.forename: Kyu Joo
authors.initials: KJ
authors.lastname: Park
authors.forename: Paivi
authors.initials: P
authors.lastname: Peltomaki
authors.forename: Maurizio Ponzo
authors.initials: MP
authors.lastname: de Leon
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Rodriguez-Bigas
authors.forename: Jan
authors.initials: J
authors.lastname: Lubinski
authors.forename: Nicholas E
authors.initials: NE
authors.lastname: Beck
authors.forename: Marie-Luise
authors.initials: ML
authors.lastname: Bisgaard
authors.forename: Michiko
authors.initials: M
authors.lastname: Miyaki
authors.forename: Juul T
authors.initials: JT
authors.lastname: Wijnen
authors.forename: Shozo
authors.initials: S
authors.lastname: Baba
authors.forename: Annika
authors.initials: A
authors.lastname: Lindblom
authors.forename: Lisa
authors.initials: L
authors.lastname: Madlensky
authors.forename: Henry T
authors.initials: HT
authors.lastname: Lynch
mesh_terms: D048868:Adaptor Proteins, Signal Transducing; D020137:Base Pair Mismatch; D002352:Carrier Proteins; D003123:Colorectal Neoplasms, Hereditary Nonpolyposis / Q000145:classification* / Q000235:genetics; D004268:DNA-Binding Proteins; D006801:Humans; D000070957:MutL Protein Homolog 1; D051718:MutS Homolog 2 Protein; D009154:Mutation; D009363:Neoplasm Proteins / Q000235:genetics; D009687:Nuclear Proteins; D011518:Proto-Oncogene Proteins / Q000235:genetics
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