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• W2024018554 startingPage "e45865" @default.
• W2024018554 abstract "Background Neoadjuvant chemotherapy (NAC) is a standard care regimen for patients with breast cancer. However, the pathologic complete response (pCR) rate remains at 30%. We hypothesized that a cancer stem cell marker may identify NAC-resistant patients, and evaluated CD133 and ALDH1 as a potential surrogate marker for breast cancer. The aim of this study was to find a surrogate maker to predict chemosensitivity of NAC for breast cancer. Methodology/Findings A total of 102 patients with breast cancer were treated with NAC consisting of epirubicin followed by paclitaxel. Core needle biopsy (CNB) specimens and resected tumors were obtained from all patients before and after NAC, respectively. Chemosensitivity and prognostic potential of CD133 or ALDH1 expression was evaluated by immunohistochemistry. Clinical CR (cCR) and pCR rates were 18% (18/102) and 29% (30/102), respectively. Forty-seven (46%) patients had CD133-positive tumors before NAC, and CD133 expression was significantly associated with a low pCR rate (p = 0.035) and clinical non-responders. Multivariate analysis revealed that CD133 expression was significantly (p = 0.03) related to pCR. Recurrence was more frequent in patients with CD133-positive tumors (21/47, 45%) than that in patients with CD133-negative tumors (7/55, 13%). The number of patients with CD133-positive tumors (62%) after NAC was higher than that (46%) before NAC. Furthermore, most patients with CD133-positive tumors before NAC maintained the same status after NAC. Conclusion/Significance CD133 before NAC might be a useful marker for predicting the effectiveness of NAC and recurrence of breast cancer after NAC." @default.
• W2024018554 created "2016-06-24" @default.
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• W2024018554 date "2012-09-25" @default.
• W2024018554 modified "2023-09-25" @default.
• W2024018554 title "CD133 Is a Useful Surrogate Marker for Predicting Chemosensitivity to Neoadjuvant Chemotherapy in Breast Cancer" @default.
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• W2024018554 doi "https://doi.org/10.1371/journal.pone.0045865" @default.
• W2024018554 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3457956" @default.
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• W2024018554 hasPublicationYear "2012" @default.
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