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. 1995 Jul;48(7):959-68.
doi: 10.1016/0895-4356(94)00201-z.

Serum prolactin levels and their relationship to survival in women with operable breast cancer

D Y Wang  1 , K A Stepniewska, D S Allen, I S Fentiman, R D Bulbrook, H G Kwa, B L De Stavola, M J Reed
Affiliations

Serum prolactin levels and their relationship to survival in women with operable breast cancer

D Y Wang et al. J Clin Epidemiol. 1995 Jul.

Abstract

The prognostic value of serum prolactin levels was assessed in a sequential series of 739 patients who were initially treated at Guy's Hospital, London, between 1975 and 1980. Prolactin was measured in 472 patients 1 day before (Hpr1) and in 457 patients 10 days after (Hpr2) mastectomy. Follow-up of the patients was up to August 1992 giving 6139 women-years with a median follow-up time of 11.5 years (13.7 for patients still living and 5.1 for those dead). The association between the three prolactin variables and reproductive and clinical factors was examined before assessing the prognostic value of prolactin levels in terms of overall, disease-specific and disease-free survival. Multivariate survival models were used in order to adjust for the effect of other prognostic variables. These were found to be: tumour size, degree of nodal involvement, tumour grade and age at diagnosis. The results showed that high Hpr2 or high postoperative increase in prolactin (i.e. Hpr2-Hpr1) were significantly related to shorter disease-specific survival (p = 0.04 and 0.01, respectively) in postmenopausal women. In addition there was some indication, which did not attain formal significance, for this association to occur for disease-free survival. Thus the rise in blood prolactin levels after surgery may be a weak indicator of poor prognosis of breast cancer in postmenopausal women.

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