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5. Interlaboratory variability of Ki67 staining in breast cancer

Author

Focke, Cornelia M., Bürger, Horst, van Diest, Paul J., Finsterbusch, Kai, Gläser, Doreen, Korsching, Eberhard, Decker, Thomas, Anders, M., Bollmann, R., Eiting, Fr, Friedrich, K., Habeck, J. O., Haroske, G., Hinrichs, B., Behrens, A., Krause, Lars Udo, Braun-Lang, U., Lorenzen, J., Minew, N., Mlynek-Kersjes, M., Nenning, H., Packeisen, J., Poche-de Vos, F., Reyher-Klein, S., Rothacker, D., Schultz, M., Sturm, U., Tawfik, M., Berghäuser, K. H., Böcker, W, Cserni, G., Habedank, S., Lax, S., Moinfar, F., Regitnig, P., Reiner-Concin, A., Rüschoff, J., Varga, Z., Woziwodski, J., and German Breast Screening Pathology Initiative

Subjects
Subtyping, Cancer Research, Breast cancer, St Gallen consensus, Oncology, Proliferation, Journal Article, Variability, Immunohistochemistry, Ki67
Abstract

Background Postanalytic issues of Ki67 assessment in breast cancers like counting method standardisation and interrater bias have been subject of various studies, but little is known about analytic variability of Ki67 staining between pathology labs. Our aim was to study interlaboratory variability of Ki67 staining in breast cancer using tissue microarrays (TMAs) and central assessment to minimise preanalytic and postanalytic influences. Methods Thirty European pathology labs stained serial slides of a TMA set of breast cancer tissues with Ki67 according to their routine in-house protocol. The Ki67-labelling index (Ki67-LI) of 70 matched samples was centrally assessed by one observer who counted all cancer cells per sample. We then tested for differences between the labs in Ki67-LI medians by analysing variance on ranks and in proportions of tumours classified as luminal A after dichotomising oestrogen receptor–positive cancers into cancers showing low (

Published
2017

6. Interlaboratory variability of Ki67 staining in breast cancer

Author

Pathologie mortuarium en obductie, UMC Utrecht, Pathologie, Cancer, Focke, Cornelia M., Bürger, Horst, van Diest, Paul J., Finsterbusch, Kai, Gläser, Doreen, Korsching, Eberhard, Decker, Thomas, Anders, M., Bollmann, R., Eiting, Fr, Friedrich, K., Habeck, J. O., Haroske, G., Hinrichs, B., Behrens, A., Krause, Lars Udo, Braun-Lang, U., Lorenzen, J., Minew, N., Mlynek-Kersjes, M., Nenning, H., Packeisen, J., Poche-de Vos, F., Reyher-Klein, S., Rothacker, D., Schultz, M., Sturm, U., Tawfik, M., Berghäuser, K. H., Böcker, W, Cserni, G., Habedank, S., Lax, S., Moinfar, F., Regitnig, P., Reiner-Concin, A., Rüschoff, J., Varga, Z., Woziwodski, J., German Breast Screening Pathology Initiative, Pathologie mortuarium en obductie, UMC Utrecht, Pathologie, Cancer, Focke, Cornelia M., Bürger, Horst, van Diest, Paul J., Finsterbusch, Kai, Gläser, Doreen, Korsching, Eberhard, Decker, Thomas, Anders, M., Bollmann, R., Eiting, Fr, Friedrich, K., Habeck, J. O., Haroske, G., Hinrichs, B., Behrens, A., Krause, Lars Udo, Braun-Lang, U., Lorenzen, J., Minew, N., Mlynek-Kersjes, M., Nenning, H., Packeisen, J., Poche-de Vos, F., Reyher-Klein, S., Rothacker, D., Schultz, M., Sturm, U., Tawfik, M., Berghäuser, K. H., Böcker, W, Cserni, G., Habedank, S., Lax, S., Moinfar, F., Regitnig, P., Reiner-Concin, A., Rüschoff, J., Varga, Z., Woziwodski, J., and German Breast Screening Pathology Initiative

Published
2017

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