Abstract
The relationship between ploidy, as measured by flow cytometry, and the presence of oestrogen and progesterone receptors was investigated in 145 primary invasive breast cancers. The tumours were considered as an integral group, and as subgroups of lobular and ductal carcinomas. An association was found between the presence of aneuploid stemlines and an absence of oestrogen receptors (ER), for the total tumour population (P less than 0.02), and for the ductal carcinoma group (P less than 0.05). An association between aneuploidy and an absence of progesterone receptors (PR) was observed for the total tumour group (P less than 0.05). Evaluation of a combined oestrogen and progesterone receptor status indicated that the association between aneuploidy and an absence of both receptors was highly significant. The probability of such an association was P less than 0.001 for the total tumour population, and P less than 0.01 for the ductal tumour group. Assessment of progesterone receptor expression by breast cancers containing oestrogen receptors indicated that aneuploid tumours were as likely to express PR as were diploid tumours. Hence, the biological activity of oestrogen receptors appears unmodified by the presence of aneuploid nuclei.
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Horsfall, D., Tilley, W., Orell, S. et al. Relationship between ploidy and steroid hormone receptors in primary invasive breast cancer. Br J Cancer 53, 23–28 (1986). https://doi.org/10.1038/bjc.1986.4
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DOI: https://doi.org/10.1038/bjc.1986.4
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