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Abstract

Novel Approaches in Cancer Study

Vitamin D and Biphosphonate in Neoadjuvant Advanced Breast Cancer

Submission: April 09, 2018; Published: June 19, 2018

DOI: 10.31031/NACS.2018.01.000519

ISSN:2637-773X
Volume1 Issue4

Abstract

Vitamin D and calcium deficiency is associated with increased breast cancer risk and decreased breast cancer survival. The purpose of this study is to determine whether the addition of vit D and Zoledronic acid (ZA) to neoadjuvant chemotherapy (NACT) gives complete histological responses. We report a prospective evaluation comparing complete pathological response between different biomolecular sub-groups.

Patients and Methods: The study included 431 women with stages III locally advanced breast cancer who received neoadjuvant chemotherapy and Zoledronic acid. All patients were prescribed vitamin D3 (cholecalciferol) 400 IU and calcium carbonate 1,000 mg daily. The main objective is the complete histologic response. Secondary end points were the over all survival of patients targeted by the study.

Results: Histologic complete response with Zoledronic acid and vit D was 40.13% the higher in the subgroup Her 2/luminal (RH±Her2+) and under Her2+ (HR-Her2+) and the lowest rate was observed in the triple negative group as classified by Sataloff, overall survival was 45.77 months for subgroups (Her2 / luminal and in Her2 + group) vs 44.11 months for triple negative group.

Conclusion: Our study confirms the potential protective and antiproliferatif effects with vitamin D and Zoledronic acid in neoadjuvant advanced breast cancer.

Keywords: Zoledronique acid; Breast cancer; Neoadjuvant chemotherapy; Vitamin D; Calcium

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