Annales d'endocrinologie · 2021
Association of vitamin D deficiency and insulin resistance with breast cancer in premenopausal Algerian women: A cross-sectional study.
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Mehaoudi Rym-Ikram, Adane Saida, Sadouki Mohamed, Melboucy Abdelaziz, Ghozlani Amel, Karouche Wafa, Cherbal Farid, Soltani Yacine
Аннотация
BACKGROUND: Low 25(OH)D levels are mainly related to breast cancer (BC) risk in postmenopausal women, while the impact of insulin resistance (IR) on BC prognosis is controversial.
OBJECTIVE: Considering the high prevalence of BC in younger Algerian women, this cross-sectional study analyzed whether vitamin D status and IR are biomarkers for breast tumor status in premenopausal women.
METHODS: In 96 women (mean age, 40.96±0.65years) newly diagnosed with BC, tumor status was determined immunohistochemically, classified by molecular subtype, then correlated with body-mass index, total plasma 25(OH)D, insulin and glucose levels and HOMA-IR, using Chi2, Student t, Spearman and ANOVA tests and multivariate logistic regression.
RESULTS: A total of 66 of the 96 patients (68.75%) showed vitamin D deficiency (9.74ng/mL). Overweight and obese patients with HOMA-IR>2.5, positive for HER2 and with high Ki-67 index had the most severe vitamin D deficiency. There was a significant association between vitamin D deficiency, high Ki-67 index (OR, 14.55; 95% CI: 3.43-82.59; P=0.00078) and IR (OR, 4.99; 95% CI: 1.27-24.47; P=0.03), and between IR and HER2-positivity (OR, 3.23; 95% CI: 1.05-10.56; P=0.04).
CONCLUSIONS: Vitamin D deficiency and IR are potential biomarkers for poorer prognosis in BC patients, independently of and/or synergically with high Ki-67 index and HER2-positivity in premenopausal overweight or obese women. The potential relationship of vitamin D receptor gene expression with breast cancer survival in Algerian patients will be investigated in a large cohort.
OBJECTIVE: Considering the high prevalence of BC in younger Algerian women, this cross-sectional study analyzed whether vitamin D status and IR are biomarkers for breast tumor status in premenopausal women.
METHODS: In 96 women (mean age, 40.96±0.65years) newly diagnosed with BC, tumor status was determined immunohistochemically, classified by molecular subtype, then correlated with body-mass index, total plasma 25(OH)D, insulin and glucose levels and HOMA-IR, using Chi2, Student t, Spearman and ANOVA tests and multivariate logistic regression.
RESULTS: A total of 66 of the 96 patients (68.75%) showed vitamin D deficiency (9.74ng/mL). Overweight and obese patients with HOMA-IR>2.5, positive for HER2 and with high Ki-67 index had the most severe vitamin D deficiency. There was a significant association between vitamin D deficiency, high Ki-67 index (OR, 14.55; 95% CI: 3.43-82.59; P=0.00078) and IR (OR, 4.99; 95% CI: 1.27-24.47; P=0.03), and between IR and HER2-positivity (OR, 3.23; 95% CI: 1.05-10.56; P=0.04).
CONCLUSIONS: Vitamin D deficiency and IR are potential biomarkers for poorer prognosis in BC patients, independently of and/or synergically with high Ki-67 index and HER2-positivity in premenopausal overweight or obese women. The potential relationship of vitamin D receptor gene expression with breast cancer survival in Algerian patients will be investigated in a large cohort.