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Performance of 4 Immunohistochemical Phosphohistone H3 Antibodies for Marking Mitotic Figures in Breast Cancer

Background: Phosphohistone H3 (PHH3) has been suggested to facilitate and improve mitotic activity assessment in breast cancer and other tumor entities, but the reliability of respective immunohistochemical antibodies has not yet been compared for routine purposes. Our aim was to test the performance of 4 different PHH3 antibodies on a series of highly proliferating breast cancers with good preservation of morphology. Methods: Four commercially available PHH3 antibodies were tested on 9 grade 3 invasive breast cancers processed in the same batch. We analyzed the number of antibody stained and nonstained mitotic figures as well as the total of cells observed in 10 high power fields per tumor to calculate sensitivity, specificity, and accuracy of the respective antibodies for staining mitotic figures, taking morphologically defined mitotic figures as gold standard. Results: Sensitivity, specificity, and accuracy of the respective PHH3 antibodies for staining mitotic figures were 54.51%, 99.98%, and 98.79% for Cell Marque, 87.48%, 67.62%, and 67.47% for Epitomics, 98.62%, 99.73%, and 99.49% for Merck 06-570, and 99.74%, 99.52%, and 99.51% for Merck 09-797, respectively. Sensitivity was lowest for telophase. In statistical analysis, the Cell Marque antibody demonstrated significantly lower sensitivity and Epitomics substantially lower sensitivity and specificity than Merck 06-570 and Merck 09-797 antibodies (P
Source: Applied Immunohistochemistry and Molecular Morphology - Category: Chemistry Tags: Research Articles Source Type: research

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Source: The Journal of Steroid Biochemistry and Molecular Biology - Category: Biochemistry Source Type: research
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Source: Journal of Cellular Physiology - Category: Cytology Authors: Tags: REVIEW ARTICLE Source Type: research
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Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Condition:   Breast Cancer Lymphedema Interventions:   Other: local distribution points association;   Other: local-distal points association;   Other: exercise with compression sleeve Sponsors:   Tianjin University of Traditional Chinese Medicine;   National Basic Research Program, China;   Tianjin Medical University Cancer Institute and Hospital;   The Second Affiliated Hospital of Baotou Medical College;   Henan Provincial Cancer Hospital;   Qilu Hospital of ...
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
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