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Migraine history and breast cancer risk among postmenopausal women
Journal article   Open access   Peer reviewed

Migraine history and breast cancer risk among postmenopausal women

Christopher I Li, Robert W Mathes, Elizabeth C Bluhm, Bette Caan, Mary F Cavanagh, Rowan T Chlebowski, Yvonne Michael, Mary Jo O'Sullivan, Marcia L Stefanick and Ross Prentice
Journal of clinical oncology, v 28(6), pp 1005-1010
20 Feb 2010
PMID: 20100960
url
https://doi.org/10.1200/JCO.2009.25.0423View
Published, Version of Record (VoR) Open

Abstract

Receptors, Estrogen - metabolism Prognosis Follow-Up Studies Neoplasm Invasiveness Humans Middle Aged Risk Factors Breast Neoplasms - etiology Survival Rate Receptors, Progesterone - metabolism Anti-Inflammatory Agents, Non-Steroidal - therapeutic use Migraine Disorders - complications Postmenopause Female Aged Neoplasm Staging Cohort Studies
PURPOSE Both migraine and breast cancer are hormonally mediated. Two recent reports indicate that women with a migraine history may have a lower risk of postmenopausal breast cancer than those who never suffered migraines. This finding requires confirmation; in particular, an assessment of the influence of use of nonsteroidal anti-inflammatory drugs (NSAID) is needed, because many studies indicate that NSAID use also may confer a reduction in breast cancer risk. METHODS We assessed the relationship between self-reported history of migraine and incidence of postmenopausal breast cancer in 91,116 women enrolled on the Women's Health Initiative Observational Study prospective cohort from 1993 to 1998 at ages 50 to 79 years. Through September 15, 2005, there were 4,006 eligible patients with breast cancer diagnosed. Results Women with a history of migraine had a lower risk of breast cancer (hazard ratio [HR], 0.89; 95% CI, 0.80 to 98) than women without a migraine history. This risk did not vary by recent NSAID use. The lower risk was somewhat more pronounced for invasive estrogen-receptor-positive and progesterone-receptor-positive tumors (HR, 0.83; 95% CI, 0.71 to 0.97), as no reduction in risk was observed for invasive ER-negative/PR-negative tumors (HR, 1.16; 95% CI, 0.86 to 1.57), and this difference in risk estimates was borderline statistically significant (P = .06). CONCLUSION This study supports the hypothesis that a history of migraine is associated with a lower risk of breast cancer and that this relationship is independent of recent NSAID use.

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Collaboration types
Domestic collaboration
Web of Science research areas
Oncology
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