Assessment of Ki67 in Breast Cancer: Recommendations from the International Ki67 in Breast Cancer Working Group
Mitch Dowsett,Torsten O. Nielsen,Roger A'Hern,John M. S. Bartlett,R. Charles Coombes,Jack Cuzick,Matthew J. Ellis,N. Lynn Henry,Judith Hugh,Tracy Lively,Lisa M. McShane,Soon Paik,Frédérique Penault-Llorca,Ljudmila Prudkin,Meredith M. Regan,Janine Salter,Christos Sotiriou,Ian E. Smith,Giuseppe Viale,Jo Anne Zujewski,Daniel F. Hayes +20 more
TLDR
Comprehensive recommendations on preanalytical and analytical assessment, and interpretation and scoring of Ki67 were formulated based on current evidence, geared toward achieving a harmonized methodology, create greater between-laboratory and between-study comparability, and allow earlier valid applications of this marker in clinical practice.Abstract:
Uncontrolled proliferation is a hallmark of cancer. In breast cancer, immunohistochemical assessment of the proportion of cells staining for the nuclear antigen Ki67 has become the most widely used method for comparing proliferation between tumor samples. Potential uses include prognosis, prediction of relative responsiveness or resistance to chemotherapy or endocrine therapy, estimation of residual risk in patients on standard therapy and as a dynamic biomarker of treatment efficacy in samples taken before, during, and after neoadjuvant therapy, particularly neoadjuvant endocrine therapy. Increasingly, Ki67 is measured in these scenarios for clinical research, including as a primary efficacy endpoint for clinical trials, and sometimes for clinical management. At present, the enormous variation in analytical practice markedly limits the value of Ki67 in each of these contexts. On March 12, 2010, an international panel of investigators with substantial expertise in the assessment of Ki67 and in the development of biomarker guidelines was convened in London by the cochairs of the Breast International Group and North American Breast Cancer Group Biomarker Working Party to consider evidence for potential applications. Comprehensive recommendations on preanalytical and analytical assessment, and interpretation and scoring of Ki67 were formulated based on current evidence. These recommendations are geared toward achieving a harmonized methodology, create greater between-laboratory and between-study comparability, and allow earlier valid applications of this marker in clinical practice.read more
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Strategies for subtypes—dealing with the diversity of breast cancer: highlights of the St Gallen International Expert Consensus on the Primary Therapy of Early Breast Cancer 2011
TL;DR: Broad treatment recommendations are presented, recognizing that detailed treatment decisions need to consider disease extent, host factors, patient preferences, and social and economic constraints.
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Personalizing the treatment of women with early breast cancer: highlights of the St Gallen International Expert Consensus on the Primary Therapy of Early Breast Cancer 2013
A. Goldhirsch,E P Winer,A S Coates,R. D. Gelber,M Piccart-Gebhart,B. Thürlimann,H.-J. Senn,Kathy S. Albain,Fabrice Andre,Jonas Bergh,Hervé Bonnefoi,Denisse Bretel-Morales,Harold J. Burstein,Fatima Cardoso,M. Castiglione-Gertsch,Alan S. Coates,Marco Colleoni,Alberto Costa,Giuseppe Curigliano,Nancy E. Davidson,Angelo Di Leo,Bent Ejlertsen,John F. Forbes,Richard D. Gelber,Michael Gnant,Aron Goldhirsch,Pamela J. Goodwin,Paul E. Goss,Jay R. Harris,Daniel F. Hayes,Clifford A. Hudis,James N. Ingle,Jacek Jassem,Zefei Jiang,Per Karlsson,Sibylle Loibl,Monica Morrow,Moïse Namer,C. Kent Osborne,Ann H. Partridge,Frédérique Penault-Llorca,Charles M. Perou,Martine Piccart-Gebhart,Kathleen I. Pritchard,Emiel J. Th. Rutgers,Felix Sedlmayer,Vladimir Semiglazov,Z Shao,Ian E. Smith,Beat Thürlimann,Masakazu Toi,Andrew Tutt,Michael Untch,Giuseppe Viale,Toru Watanabe,Nicholas Wilcken,Eric P. Winer,William C. Wood +57 more
TL;DR: The 13th St Gallen International Breast Cancer Conference (2013) Expert Panel reviewed and endorsed substantial new evidence on aspects of the local and regional therapies for early breast cancer, supporting less extensive surgery to the axilla and shorter durations of radiation therapy.
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Primary breast cancer: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up
Elżbieta Senkus,Stella Kyriakides,Frédérique Penault-Llorca,P.M. Poortmans,Alexander J. Thompson,Sophia Zackrisson,Fatima Cardoso +6 more
TL;DR: This work presents the results of a meta-analysis conducted at the 2016 European Oncology and Radiotherapy Guidelines Working Group (ESMO) workshop on breast cancer diagnosis and prognosis of women with atypical central giant cell granuloma (CGM) who have previously had surgery.
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Clinical practice guidelines in oncology
William J. Gradishar,Benjamin O. Anderson,Ron Balassanian,Sarah L. Blair,Harold J. Burstein,Amy E. Cyr,Anthony D. Elias,William B. Farrar,Andres Forero,Sharon H. Giordano,Matthew P. Goetz,Lori J. Goldstein,Steven J. Isakoff,Janice A. Lyons,P. Kelly Marcom,Ingrid A. Mayer,Beryl McCormick,Meena S. Moran,Ruth O'Regan,Sameer A. Patel,Lori J. Pierce,Elizabeth C. Reed,Kilian E. Salerno,Lee S. Schwartzberg,Amy Sitapati,Karen L. Smith,Mary Lou Smith,Hatem Soliman,George Somlo,Melinda L. Telli,John H. Ward,Rashmi Kumar,Dorothy A. Shead +32 more
TL;DR: This manuscript focuses on the NCCN Guidelines Panel recommendations for the workup, primary treatment, risk reduction strategies, and surveillance specific to DCIS.
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Clinical implications of the intrinsic molecular subtypes of breast cancer.
Aleix Prat,Aleix Prat,Estela Pineda,Barbara Adamo,Barbara Adamo,Patricia Galván,Aranzazu Fernandez,Aranzazu Fernandez,Lydia Gaba,Lydia Gaba,Marc Díez,Marc Díez,Margarita Viladot,Margarita Viladot,Ana Arance,Ana Arance,Montserrat Muñoz,Montserrat Muñoz +17 more
TL;DR: Data suggests that intrinsic molecular profiling provides clinically relevant information beyond current pathology-based classifications within triple-negative breast cancer (TNBC) and within hormone receptor-positive and HER2-negative early breast cancer.
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Journal ArticleDOI
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Thomas Scholzen,Johannes Gerdes +1 more
TL;DR: Although the Ki‐67 protein is well characterized on the molecular level and extensively used as a proliferation marker, the functional significance still remains unclear; there are indications, however, that Ki‐ 67 protein expression is an absolute requirement for progression through the cell‐division cycle.
Journal Article
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TL;DR: The data suggest that the early stages of mitogen stimulation represent initial sequences of proliferation and not parts of the cell cycle, and immunostaining with monoclonal antibody Ki-67 provides a reliable means of rapidly evaluating the growth fraction of normal and neoplastic human cell populations.
Journal ArticleDOI
American Society of Clinical Oncology/College of American Pathologists Guideline Recommendations for Immunohistochemical Testing of Estrogen and Progesterone Receptors in Breast Cancer
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Journal ArticleDOI
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C Davies,Jon Godwin,Richard Gray,Mike Clarke,D Cutter,Sarah C. Darby,Paul McGale,Huade Pan,C Taylor,Yiwei Wang,Mitch Dowsett,James N. Ingle,Richard Peto +12 more
TL;DR: The absolute risk reductions produced by tamoxifen depend on the absolute breast cancer risks (after any chemotherapy) without tamox ifen, so all-cause mortality was substantially reduced.
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