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High fasting blood glucose and obesity significantly and independently increase risk of breast cancer death in hormone receptor-positive disease

Minicozzi, Pamela and Berrino, Franco and Sebastiani, Federica and Falcini, Fabio and Vattiato, Rosa and Cioccoloni, Francesca and Calagreti, Gioia and Fusco, Mario and Vitale, Maria Francesca and Tumino, Rosario and Sigona, Aurora and Budroni, Mario and Cesaraccio, Rosaria and Candela, Giuseppa and Scuderi, Tiziana and Zarcone, Maurizio and Campisi, Ildegarda and Sant, Milena (2013) High fasting blood glucose and obesity significantly and independently increase risk of breast cancer death in hormone receptor-positive disease. European journal of cancer, Vol. 49 (18), p. 3881-3888. ISSN 0959-8049. eISSN 1879-0852. Article.

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DOI: 10.1016/j.ejca.2013.08.004

Abstract

Purpose: We investigated the effect of fasting blood glucose and body mass index (BMI) at diagnosis on risk of breast cancer death for cases diagnosed in five Italian cancer registries in 2003–2005 and followed up to the end of 2008.
Methods: For 1607 Italian women (⩾15 years) with information on BMI or blood glucose or diabetes, we analysed the risk of breast cancer death in relation to glucose tertiles (⩽84.0, 84.1–94.0, >94.0 mg/dl) plus diabetic and unspecified categories; BMI tertiles (⩽23.4, 23.5–27.3, >27.3 kg/m2, unspecified), stage (T1–3N0M0, T1–3N+M0 plus T4anyNM0, M1, unspecified), oestrogen (ER) and progesterone (PR) status (ER+PR+, ER−PR−, ER and PR unspecified, other), age, chemotherapy and endocrine therapy, using multiple regression models. Separate models for ER+PR+ and ER−PR− cases were also run.
Results: Patients often had T1–3N0M0, ER+PR+ cancers and received chemotherapy or endocrine therapy; only 6% were M1 and 17% ER−PR−. Diabetic patients were older and had more often high BMI (>27 kg/m2), ER−PR−, M1 cancers than other patients. For ER+PR+ cases, with adjustment for other variables, breast cancer mortality was higher in women with high BMI than those with BMI 23.5–27.3 kg/m2 (hazard ratio (HR) = 2.9, 95% confidence interval (CI) 1.2–6.9). Breast cancer mortality was also higher in women with high (>94 mg/dl) blood glucose compared to those with glucose 84.1–94.0 mg/dl (HR = 2.6, 95% CI 1.2–5.7).
Conclusion: Our results provide evidence that in ER+PR+ patients, high blood glucose and high BMI are independently associated with increased risk of breast cancer death. Detection and correction of these factors in such patients may improve prognosis.

Item Type:Article
ID Code:9750
Status:Published
Refereed:Yes
Uncontrolled Keywords:Breast cancer, risk of death, blood glucose, obesity, hormone receptor status
Subjects:Area 06 - Scienze mediche > MED/08 Anatomia patologica
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > Azienda ASL1, Sassari > Centro multizonale di osservazione epidemiologica
Publisher:Elsevier
ISSN:0959-8049
eISSN:1879-0852
Deposited On:10 Apr 2014 09:11

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