Background: Breast cancer (BC) is known as the most prevalent type of cancer among women. Trastuzumab, as an anticancer drug, has been used broadly in human epidermal growth factor receptor 2 (HER-2) positive (+) BC patients. Moreover, accumulating evidence has demonstrated that microRNAs is involved in the pathogenesis BC. Hence, we aimed to investigate the effect of trastuzumab on the expression levels of microRNA-26a in HER-2 positive BC patients.
Methods: This study was conducted among HER-2 + and HER-2 Negative (-) BC patients. Serum expression of microRNA-26a was detected by real-time PCR. Then, we assessed the correlations of microRNA-26a levels with multiple clinico-pathological characteristics of BC.
Results: In HER-2 + patients, the microRNA-26a expression significantly increased after treatment with Docetaxel/Trastuzumab in comparison to before the treatment levels (p.value = 0.01). However, this overexpression in HER-2-patients after treatment with Docetaxel was not significant compared to the levels before the treatment (p.value = 0.14). In addition, the expression of microRNA -26a has significantly increased in HER-2 + patients who were ≤48 years old and premenopausal after the treatment with Docetaxel/Trastuzumab when compared to the levels before the treatment (p.value = 0.039 vs. 0.031, respectively). Furthermore, there was a significant correlation between the expression of microRNA -26a and the tumor size, stage, estrogen receptor (ER) and progesterone receptor (PR) status in the HER-2 + group before and after the treatment (p.value = 0.043, 0.042, 0.049 and 0.034 respectively).
Conclusions: Trastuzumab led to overexpression of microRNA-26a in HER-2 + BC patients. It seems that the detecting microRNA -26a expression levels, during or after the trastuzumab therapy could be a useful biomarker for monitoring the therapeutic response in HER-2 + BC patients. However, further studies on large populations of women with HER-2+ BC are needed to explore this possible novel biomarker, in more detail, within various clinical contexts.
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http://dx.doi.org/10.37796/2211-8039.1150 | DOI Listing |
Oral Surg Oral Med Oral Pathol Oral Radiol
December 2024
Service of Oral Pathology, João de Barros Barreto University Hospital, Federal University of Para, Belem, Para, Brazil.
We present a case of a patient with HER-2 positive breast cancer who developed extensive areas of osteonecrosis in the mandible and maxilla due to the combination of trastuzumab, carboplatin, and docetaxel. The pathogenesis is discussed based on the literature.
View Article and Find Full Text PDFClin Breast Cancer
December 2024
Department of Oncology, The First Hospital of Jiaxing (Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, China. Electronic address:
Introduction: The role of postmastectomy radiotherapy (PMRT) in clinical prognostic stage I-III breast cancer patients with positive responses and achieving ypN0 after Neoadjuvant therapy (NAT) is controversial.
Methods: 3557 patients with TNM clinical prognostic stage (AJCC 8th Edition) I-III breast cancer with positive responses and achieving ypN0 following neoadjuvant therapy were selected from the Surveillance, Epidemiology, and End Results (SEER) database and followed through the end of 2020. COX proportional hazards models were employed to examine the associations between clinical or pathological parameters and OS.
Nat Commun
January 2025
National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
This study (NCT04728035) aimed to explore the safety and efficacy of liposomal irinotecan (HE072) in patients with metastatic triple-negative breast cancer (mTNBC). This study consisted of two parts. In part 1, the 3 + 3 design was used to investigate three dose levels of HE072 (50, 70 and 90 mg/m).
View Article and Find Full Text PDFPLoS One
January 2025
Department of General Surgery, Breast Cancer Center, Gachon University Gil Medical Center, Incheon, Republic of Korea.
Purpose: In-vivo proton magnetic resonance spectroscopy (MRS) is a non-invasive method of analyzing choline metabolism that has been used to predict breast cancer prognosis. A strong choline peak may be a surrogate for aggressive tumor biology but its clinical relevance is unclear. The present study assessed whether total choline (tCho), as measured by proton MRS, can predict late recurrence in patients with hormone receptor (HR)-positive, HER2-negative early breast cancer.
View Article and Find Full Text PDFJ Manag Care Spec Pharm
January 2025
The Comparative Health Outcomes, Policy, and Economics (CHOICE) Institute, Department of Pharmacy, University of Washington, Seattle.
Background: The introduction of cyclin-dependent kinases 4 and 6 inhibitors (CDK4/6is) has transformed the treatment landscape for patients with hormone receptor positive (HR+) and human epidermal growth factor receptor 2 negative (HER2-) metastatic breast cancer (MBC). To our knowledge, no studies have quantified health care resource utilization (HRU) or economic burden following CDK4/6i initiation in the Medicare population.
Objective: To describe HRU and quantify health care costs among Medicare-enrolled patients with HR+ HER2- MBC treated with CDK4/6is in the first-line setting.
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