Detection of human mammaglobin mRNA in serial peripheral blood samples from patients with non-metastatic breast cancer is not predictive of disease recurrence

Breast Cancer Research and Treatment
Ana Rita MarquesJosé Luís Passos-Coelho

Abstract

Human mammaglobin (hMAM) mRNA is a sensitive and specific marker of breast cancer cells. We evaluated if hMAM mRNA detection in serial peripheral blood samples from non-metastatic breast cancer patients predicts for disease recurrence. Patients scheduled for adjuvant or neoadjuvant chemotherapy were eligible. Serial blood samples were collected up to 5 years, the first before (neo)adjuvant chemotherapy. hMAM gene expression was analysed by RT-PCR. Specificity was evaluated in blood samples from healthy volunteers. A total of 321 patients were included. The incidence of pre-chemotherapy hMAM-positive samples was similar in patients who latter experienced cancer recurrence (22.4%) and those who remained disease-free (17.9%; P = 0.46). Similarly, the mean number of positive follow-up samples was similar in both groups (0.15 +/- 0.22 and 0.13 +/- 013; P = 0.29). Furthermore, there was no difference in disease-free (P = 0.63) or overall survival (P = 0.57) in patients with and without positive baseline samples or between patients whose follow-up samples were always hMAM negative and those with at least one positive sample. Multivariate survival analysis confirmed that hMAM mRNA detection before or after (neo)adjuvant chemotherapy wa...Continue Reading

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Jun 16, 2010·Breast Cancer Research and Treatment·Anne M FrielLorraine O'Driscoll
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