Breast Cancer Research and Treatment

, Volume 115, Issue 2, pp 241–254

Proliferation is the strongest prognosticator in node-negative breast cancer: significance, error sources, alternatives and comparison with molecular prognostic markers

  • Jan P. A. Baak
  • Einar Gudlaugsson
  • Ivar Skaland
  • Lydia Hui Ru Guo
  • Jan Klos
  • Tone Hoel Lende
  • Håvard Søiland
  • Emiel A. M. Janssen
  • Axel zur Hausen
Review

DOI: 10.1007/s10549-008-0126-y

Cite this article as:
Baak, J.P.A., Gudlaugsson, E., Skaland, I. et al. Breast Cancer Res Treat (2009) 115: 241. doi:10.1007/s10549-008-0126-y

Abstract

Independent studies have shown that in node negative breast cancer patients less than 71 years, the proliferation marker mitotic activity index (MAI) is the strongest, most well reproducible prognosticator and chemotherapy success predictor. The MAI overshadows the prognostic value of tubule formation, nuclear atypia and thereby grade. An often used crude mitotic impression is much less prognostic than the MAI; strict adherence to the MAI protocol is therefore important. The prognostic value of the MAI is age dependent: although patients with a MAI ≥ 10 always have a poor prognosis irrespective of age, a low MAI (<10) loses its favourable prognostic association in women >70 years. PPH3 counts are prognostically stronger than the MAI, and markers such as Cyclin-B and E2FR are promising, but must be validated. Compared with commercial prognostic gene expression signatures, the MAI is at least as strong prognostically, has far fewer false positive results and as such should be included as an independent feature in any node negative breast cancer pathology report.

Keywords

Breast cancerProliferationMitotic activity indexPrognosisError sourcesMolecular markers

Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • Jan P. A. Baak
    • 1
    • 2
    • 3
  • Einar Gudlaugsson
    • 1
    • 2
  • Ivar Skaland
    • 1
    • 2
  • Lydia Hui Ru Guo
    • 4
  • Jan Klos
    • 1
  • Tone Hoel Lende
    • 5
  • Håvard Søiland
    • 5
  • Emiel A. M. Janssen
    • 1
  • Axel zur Hausen
    • 6
  1. 1.Department of PathologyStavanger University HospitalStavangerNorway
  2. 2.The Gade InstituteUniversity of BergenBergenNorway
  3. 3.Free UniversityAmsterdamThe Netherlands
  4. 4.Department of Oncology-3Longhua HospitalShanghaiPeople’s Republic of China
  5. 5.Department of Endocrine SurgeryStavanger University HospitalStavangerNorway
  6. 6.Institute of PathologyUniversity Hospital FreiburgFreiburgGermany