Reproductive Factors, Hormone Use, Estrogen Receptor Expression and Risk of Non–Small-Cell Lung Cancer in Women

医学 内科学 肿瘤科 肺癌 人口 体质指数 四分位数 雌激素受体 雌激素 癌症 乳腺癌 内分泌学 妇科 置信区间 环境卫生
作者
Ann G. Schwartz,Angela S. Wenzlaff,Geoffrey M. Prysak,Valerie Murphy,Michele L. Coté,Sam C. Brooks,Debra F. Skafar,Fulvio Lonardo
出处
期刊:Journal of Clinical Oncology [American Society of Clinical Oncology]
卷期号:25 (36): 5785-5792 被引量:154
标识
DOI:10.1200/jco.2007.13.3975
摘要

Estrogen receptor (ER) expression in lung tumors suggests that estrogens may play a role in the development of lung cancer. We evaluated the role of hormone-related factors in determining risk of non-small-cell lung cancer (NSCLC) in women. We also evaluated whether risk factors were differentially associated with cytoplasmic ER-alpha and/or nuclear ER-beta expression-defined NSCLC in postmenopausal women.Population-based participants included women aged 18 to 74 years diagnosed with NSCLC in metropolitan Detroit between November 1, 2001 and October 31, 2005. Population-based controls were identified through random digit dialing, matched to patient cases on race and 5-year age group. Interview data were analyzed for 488 patient cases (241 with tumor ER results) and 498 controls.Increased duration of hormone replacement therapy (HRT) use in quartiles was associated with decreased risk of NSCLC in postmenopausal women (odds ratio = 0.88; 95% CI, 0.78 to 1.00; P = .04), adjusting for age, race, pack-years, education, family history of lung cancer, current body mass index, years exposed to second-hand smoke in the workplace, and obstructive lung disease history. Among postmenopausal women, ever using HRT, increasing HRT duration of use in quartiles, and increasing quartiles of estrogen use were significant predictors of reduced risk of NSCLC characterized as ER-alpha and/or ER-beta positive. None of the hormone-related variables were associated with nuclear ER-alpha- or ER-beta-negative NSCLC.These findings suggest that postmenopausal hormone exposures are associated with reduced risk of ER-alpha- and ER-beta-expressing NSCLC. Understanding tumor characteristics may direct development of targeted treatment for this disease.
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