Alcohol-related breast cancer in postmenopausal women – effect of CYP19A1, PPARG and PPARGC1A polymorphisms on female sex-hormone levels and interaction with alcohol consumption and NSAID usage in a nested case-control study and a randomised controlled trial

ABSTRACT Background Carotenoids represent 1 of few modifiable factors to reduce breast cancer risk. Elucidation of interactions between circulating carotenoids and genetic predispositions or mammographic density (MD) may help inform more effective primary preventive strategies in high-risk populations. Objectives We tested whether women at high risk for breast cancer due to genetic predispositions or high MD would experience meaningful and greater risk reduction from higher circulating levels of carotenoids in a nested case-control study in the Nurses’ Health Studies (NHS and NHSII). Methods This study included 1919 cases and 1695 controls in a nested case-control study in the NHS and NHSII. We assessed both multiplicative and additive interactions. RR reductions and 95% CIs were calculated using unconditional logistic regressions, adjusting for matching factors and breast cancer risk factors. Absolute risk reductions (ARR) were calculated based on Surveillance, Epidemiology, and End Results incidence rates. Results We showed that compared with women at low genetic risk or low MD, those with higher genetic risk scores or high MD had greater ARRs for breast cancer as circulating carotenoid levels increase (additive P-interaction = 0.05). Among women with a high polygenic risk score, those in the highest quartile of circulating carotenoids had a significant ARR (28.6%; 95% CI, 14.8–42.1%) compared to those in the lowest quartile of carotenoids. For women with a high percentage MD (≥50%), circulating carotenoids were associated with a 37.1% ARR (95% CI, 21.7–52.1%) when comparing the highest to the lowest quartiles of circulating carotenoids. Conclusions The inverse associations between circulating carotenoids and breast cancer risk appeared to be more pronounced in high-risk women, as defined by germline genetic makeup or MD.

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Bleeding risk in breast cancer patients during concomitant administration of warfarin and tamoxifen: A population‐based nested case‐control study

The Breast Journal ◽

10.1111/tbj.13759 ◽

2020 ◽

Vol 26 (5) ◽

pp. 981-987

Author(s):

Antonis Valachis ◽

Hans Garmo ◽

Irma Fredriksson ◽

Malin Sund ◽

Bo Lagerqvist ◽

...

Keyword(s):

Breast Cancer ◽

Cancer Patients ◽

Case Control Study ◽

Concomitant Administration ◽

Bleeding Risk ◽

Population Based ◽

Case Control ◽

Breast Cancer Patients ◽

Nested Case Control ◽

Control Study

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Plasma Magnesium Concentrations and Risk of Incident Cancer in Adults with Hypertension: A Nested Case-Control Study

Annals of Nutrition and Metabolism ◽

10.1159/000510214 ◽

2020 ◽

Vol 76 (5) ◽

pp. 304-312

Author(s):

Tengfei Lin ◽

Chonglei Bi ◽

Yun Song ◽

Huiyuan Guo ◽

Lishun Liu ◽

...

Keyword(s):

Case Control Study ◽

Smoking Status ◽

Controlled Trial ◽

Case Control ◽

Cancer Site ◽

Incident Cancer ◽

Plasma Magnesium ◽

Nested Case Control ◽

Risk Of Cancer ◽

Control Study

Objective: The association between plasma magnesium and risk of incident cancer remains inconclusive in previous studies. We aimed to investigate the prospective relationship of baseline plasma magnesium concentrations with the risk of incident cancer and to examine possible effect modifiers. Methods: A nested case-control study with 228 incident cancer cases and 228 matched controls was conducted using data from the China Stroke Primary Prevention Trial (CSPPT), a randomized, double-blind, controlled trial, conducted from May 2008 to August 2013. Study outcomes included incident cancer and its subtypes. Results: When plasma magnesium concentrations were assessed as quartiles, a significantly higher incident risk of total cancer was found in participants in quartile 1 (<0.76 mmol/L; odds ratio [OR] = 2.70; 95% CI: 1.33–5.49) and quartile 4 (≥0.89 mmol/L; OR = 2.05; 95% CI: 1.12–3.76), compared with those in quartile 3 (0.83 to <0.89 mmol/L). In cancer site-specific analyses, similar trends were found for gastrointestinal cancer, esophageal cancer, gastric cancer, breast cancer, lung cancer, and other cancers. Furthermore, none of the variables, including age, sex, current smoking status, current alcohol intake, BMI, systolic blood pressure, and total cholesterol levels at baseline significantly modified the association between plasma magnesium and cancer risk. Conclusions: Both low and high plasma magnesium concentrations were significantly associated with an increased incident risk of cancer, compared with the reference concentrations of 0.83 to <0.89 mmol/L among hypertensive adults.

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Circulating levels of 25-hydroxyvitamin D and risk of breast cancer: a nested case-control study

Breast Cancer Research ◽

10.1186/bcr3390 ◽

2013 ◽

Vol 15 (1) ◽

Cited By ~ 35

Author(s):

Stephanie Scarmo ◽

Yelena Afanasyeva ◽

Per Lenner ◽

Karen L Koenig ◽

Ronald L Horst ◽

...

Keyword(s):

Breast Cancer ◽

Case Control Study ◽

Case Control ◽

Hydroxyvitamin D ◽

25 Hydroxyvitamin D ◽

Nested Case Control ◽

Circulating Levels ◽

Control Study

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Lifetime alcohol consumption and breast cancer: a case–control study in Finland

Public Health Nutrition ◽

10.1017/s1368980000000033 ◽

2000 ◽

Vol 3 (1) ◽

pp. 11-18 ◽

Cited By ~ 12

Author(s):

Satu Männistö ◽

Mikko Virtanen ◽

Vesa Kataja ◽

Matti Uusitupa ◽

Pirjo Pietinen

Keyword(s):

Breast Cancer ◽

Alcohol Consumption ◽

Postmenopausal Women ◽

Case Control Study ◽

Premenopausal Women ◽

Case Control ◽

Total Lifetime ◽

Increased Risk ◽

Control Study ◽

Current Alcohol

AbstractObjectiveTo study the association between lifetime alcohol consumption and the risk of breast cancer.Design and settingA case–control study carried out in eastern Finland. Information about alcohol consumption was obtained by two methods: a self-administered food frequency questionnaire (FFQ) including alcohol consumption during the previous 12 months, and a lifetime alcohol consumption questionnaire (AQ) which was administered by the study nurse.SubjectsThe study consisted of 301 breast cancer cases (25–75 years old) and 443 population controls.ResultsThe subjects reported higher current alcohol consumption in the AQ compared to the FFQ. According to the AQ, premenopausal cases consumed on average 28 g and controls 24 g alcohol week−1; in postmenopausal women the values were 15 and 14 g, respectively. About 30% of premenopausal and 60% of postmenopausal women were classified as non-drinkers. The correlation for current alcohol consumption between the FFQ and the AQ was 0.80 in premenopausal women but only 0.40 in postmenopausal women. Current alcohol consumption seemed to influence the reporting of total lifetime alcohol consumption. Current alcohol consumption was not associated with the risk of breast cancer either in premenopausal or postmenopausal women; neither were associations found between alcohol consumption at age of first use, use before the age of 30, or total lifetime alcohol consumption and the risk of breast cancer.ConclusionsOn average, one to three drinks per week did not increase the risk of breast cancer in this study. Consumption levels were, however, too low to exclude increased risk with high regular consumption. Further research is necessary on lifetime alcohol consumption.

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