title: Dutch Risk Classification and FIGO 2000 for Gestational Trophoblastic Neoplasia Compared.
abstract: Over the years, there has been a wide variety of classification systems in use worldwide to stratify patients between single-agent versus multi-agent chemotherapy, hindering comparison of international research results. The study presents a retrospective comparison of the International Federation of Gynecology and Obstetrics 2000 and Dutch risk classification system for gestational trophoblastic neoplasia.
  
  
  
  All patients diagnosed with gestational trophoblastic neoplasia between January 2003 and December 2012 at the trophoblastic disease centre in London were retrospectively scored according to the Dutch classification system (N = 813).
  
  
  
  An extensive overlap between both scoring systems was seen, even though items and relative value of items were quite distinct. The Dutch system seems to be simpler and easier to apply in all situation; a degree of overtreatment can however be presumed with the use of either system.
  
  
  
  Although it is likely that outcome is indeed affected by the individual factors used in both systems, many factors relate to tumor bulk and may not be independently prognostic. We therefore believe that further refinement of the classification systems and their underlying prognostic items plus any new items that seem promising would be useful.
authors.affiliation: Departments of *Obstetrics and Gynecology, †Laboratory Medicine, and ‡Medical Oncology, Radboud University Medical Centre, Nijmegen, Netherlands; and Departments of §Medical Oncology and ‖Pathology, Charing Cross and Hammersmith Campuses Imperial College London, United Kingdom.
authors.forename: Yalcke Kjelle
authors.initials: YK
authors.lastname: Eysbouts
authors.forename: Leon
authors.initials: L
authors.lastname: Massuger
authors.forename: Chris
authors.initials: C
authors.lastname: Thomas
authors.forename: Petronella
authors.initials: P
authors.lastname: Ottevanger
authors.forename: Delia
authors.initials: D
authors.lastname: Short
authors.forename: Richard
authors.initials: R
authors.lastname: Harvey
authors.forename: Neil
authors.initials: N
authors.lastname: Sebire
authors.forename: Baljeet
authors.initials: B
authors.lastname: Kaur
authors.forename: Sarwar
authors.initials: S
authors.lastname: Naveed
authors.forename: Fred
authors.initials: F
authors.lastname: Sweep
authors.forename: Michael
authors.initials: M
authors.lastname: Seckl
mesh_terms: D005260:Female; D031901:Gestational Trophoblastic Disease / Q000145:classification*; D006801:Humans; D011247:Pregnancy; D012189:Retrospective Studies; D018570:Risk Assessment / Q000379:methods