Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis

Abstract Background Many studies have reported the relationship between prognosis and Slug protein expression in breast cancer patients, but the results are discrepant. Therefore, there is a need for meta-analyses with high statistical power to investigate and further explore their relationship. Met...

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Main Authors: Zhihao Zhang, Tian Fang, Yonggang Lv
Format: Article
Language:English
Published: BMC 2022-11-01
Series:World Journal of Surgical Oncology
Subjects:
Online Access:https://doi.org/10.1186/s12957-022-02825-6
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author Zhihao Zhang
Tian Fang
Yonggang Lv
author_facet Zhihao Zhang
Tian Fang
Yonggang Lv
author_sort Zhihao Zhang
collection DOAJ
description Abstract Background Many studies have reported the relationship between prognosis and Slug protein expression in breast cancer patients, but the results are discrepant. Therefore, there is a need for meta-analyses with high statistical power to investigate and further explore their relationship. Methods We used PubMed, Embase, the Cochrane Library, Scopus, MEDLINE, and the Web of Science to find studies on breast cancer and Slug. Overall survival (OS) and disease-free survival (DFS) were the study’s primary endpoints. We pooled hazard ratios (HRs) and odds ratios (ORs) to assess the association between Slug protein expression and prognostic and clinicopathological parameters. This study was performed using STATA version 14.0 for data analysis. (Stata Corporation, TX, USA). Results We conducted a literature search by searching six online databases. Ultimately, we obtained eight studies including 1458 patients through strict exclusion criteria. The results showed that increased Slug protein expression resulted in poorer OS (HR = 2.21; 95% CI = 1.47–3.33; P < 0.001) and DFS (HR = 2.03; 95% CI = 1.26–3.28; P = 0.004) in breast cancer patients. In addition, the results suggested that breast cancer patients with increased Slug protein expression had a higher TNM stage (I–II vs III–IV; OR = 0.42; 95% CI = 0.25–0.70; P = 0.001), a greater tendency to have axillary lymph node metastases (N+ vs N0; OR = 2.16; 95% CI = 1.31–3.56; P = 0.003) and were more prone to estrogen receptor deficiency (positive vs negative; OR = 0.67; 95% CI = 0.45–0.99; P = 0.042). However, Slug protein expression was not associated with age, histological grade, tumor size, progesterone receptor status, or human epidermal growth factor receptor 2 status in breast cancer patients. Conclusion This meta-analysis showed that elevated Slug protein expression may be related to poor outcomes in patients with breast cancer. Therefore, Slug is not only an indicator of patient survival but may also become a new target for breast cancer therapy.
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spelling doaj.art-13eabecebc474ea59c665ab17e45fdef2022-12-22T02:46:22ZengBMCWorld Journal of Surgical Oncology1477-78192022-11-0120111110.1186/s12957-022-02825-6Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysisZhihao Zhang0Tian Fang1Yonggang Lv2Department of Thyroid Breast Surgery, Xi’an NO.3 Hospital, the Affiliated Hospital of Northwest UniversityDepartment of Medical Oncology, Cancer Center, West China Hospital, Sichuan UniversityDepartment of Thyroid Breast Surgery, Xi’an NO.3 Hospital, the Affiliated Hospital of Northwest UniversityAbstract Background Many studies have reported the relationship between prognosis and Slug protein expression in breast cancer patients, but the results are discrepant. Therefore, there is a need for meta-analyses with high statistical power to investigate and further explore their relationship. Methods We used PubMed, Embase, the Cochrane Library, Scopus, MEDLINE, and the Web of Science to find studies on breast cancer and Slug. Overall survival (OS) and disease-free survival (DFS) were the study’s primary endpoints. We pooled hazard ratios (HRs) and odds ratios (ORs) to assess the association between Slug protein expression and prognostic and clinicopathological parameters. This study was performed using STATA version 14.0 for data analysis. (Stata Corporation, TX, USA). Results We conducted a literature search by searching six online databases. Ultimately, we obtained eight studies including 1458 patients through strict exclusion criteria. The results showed that increased Slug protein expression resulted in poorer OS (HR = 2.21; 95% CI = 1.47–3.33; P < 0.001) and DFS (HR = 2.03; 95% CI = 1.26–3.28; P = 0.004) in breast cancer patients. In addition, the results suggested that breast cancer patients with increased Slug protein expression had a higher TNM stage (I–II vs III–IV; OR = 0.42; 95% CI = 0.25–0.70; P = 0.001), a greater tendency to have axillary lymph node metastases (N+ vs N0; OR = 2.16; 95% CI = 1.31–3.56; P = 0.003) and were more prone to estrogen receptor deficiency (positive vs negative; OR = 0.67; 95% CI = 0.45–0.99; P = 0.042). However, Slug protein expression was not associated with age, histological grade, tumor size, progesterone receptor status, or human epidermal growth factor receptor 2 status in breast cancer patients. Conclusion This meta-analysis showed that elevated Slug protein expression may be related to poor outcomes in patients with breast cancer. Therefore, Slug is not only an indicator of patient survival but may also become a new target for breast cancer therapy.https://doi.org/10.1186/s12957-022-02825-6Meta-analysisBreast cancerSlugProteinPrognosis
spellingShingle Zhihao Zhang
Tian Fang
Yonggang Lv
Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis
World Journal of Surgical Oncology
Meta-analysis
Breast cancer
Slug
Protein
Prognosis
title Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis
title_full Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis
title_fullStr Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis
title_full_unstemmed Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis
title_short Prognostic and clinicopathological value of Slug protein expression in breast cancer: a systematic review and meta-analysis
title_sort prognostic and clinicopathological value of slug protein expression in breast cancer a systematic review and meta analysis
topic Meta-analysis
Breast cancer
Slug
Protein
Prognosis
url https://doi.org/10.1186/s12957-022-02825-6
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AT tianfang prognosticandclinicopathologicalvalueofslugproteinexpressioninbreastcancerasystematicreviewandmetaanalysis
AT yongganglv prognosticandclinicopathologicalvalueofslugproteinexpressioninbreastcancerasystematicreviewandmetaanalysis