YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation

Background: YAP1, an oncogene in numerous cancers, is a downstream transcription factor of the Hippo pathway. This study focuses on its relationship with the Oncotype Dx (ODX) test risk score (RS) in patients with hormone-receptor-positive, HER2-negative (HR+HER2−) breast cancer. Methods: We retrosp...

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Main Authors: Inho Park, Yangkyu Lee, Jee Hung Kim, Soong June Bae, Sung Gwe Ahn, Joon Jeong, Yoon Jin Cha
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/15/20/5034
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author Inho Park
Yangkyu Lee
Jee Hung Kim
Soong June Bae
Sung Gwe Ahn
Joon Jeong
Yoon Jin Cha
author_facet Inho Park
Yangkyu Lee
Jee Hung Kim
Soong June Bae
Sung Gwe Ahn
Joon Jeong
Yoon Jin Cha
author_sort Inho Park
collection DOAJ
description Background: YAP1, an oncogene in numerous cancers, is a downstream transcription factor of the Hippo pathway. This study focuses on its relationship with the Oncotype Dx (ODX) test risk score (RS) in patients with hormone-receptor-positive, HER2-negative (HR+HER2−) breast cancer. Methods: We retrospectively analyzed 401 HR+HER2− breast cancer patients from Gangnam Severance Hospital who underwent ODX tests (May 2014–April 2020). YAP1 nuclear localization was evaluated via immunohistochemical staining and its clinical correlation with clinicopathological parameters, including RS, was analyzed. Public datasets TCGA-BRCA and METABRIC validated clinical outcomes. Results: YAP1 expression negatively correlated with ODX RS (OR 0.373, <i>p</i> = 0.002). Elevated YAP1 mRNA levels corresponded to better clinical outcomes, specifically in ER-positive patients, with significant results in METABRIC and TCGA-BRCA datasets (<i>p</i> < 0.0001 OS in METABRIC, <i>p</i> = 0.00085 RFS in METABRIC, <i>p</i> = 0.040 DFS in TCGA-BRCA). In subsets with varying ESR1 mRNA expression and pronounced YAP1 expression, superior survival outcomes were consistently observed. Conclusion: YAP1 may be a valuable prognostic marker and potential therapeutic target in HR+HER2− breast cancer patients.
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spelling doaj.art-71b7e6e24df04dcfaa328f3cdee825c72023-11-19T15:59:38ZengMDPI AGCancers2072-66942023-10-011520503410.3390/cancers15205034YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset ValidationInho Park0Yangkyu Lee1Jee Hung Kim2Soong June Bae3Sung Gwe Ahn4Joon Jeong5Yoon Jin Cha6Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaDepartment of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaInstitute of Breast Cancer Precision Medicine, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaInstitute of Breast Cancer Precision Medicine, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaInstitute of Breast Cancer Precision Medicine, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaInstitute of Breast Cancer Precision Medicine, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaDepartment of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of KoreaBackground: YAP1, an oncogene in numerous cancers, is a downstream transcription factor of the Hippo pathway. This study focuses on its relationship with the Oncotype Dx (ODX) test risk score (RS) in patients with hormone-receptor-positive, HER2-negative (HR+HER2−) breast cancer. Methods: We retrospectively analyzed 401 HR+HER2− breast cancer patients from Gangnam Severance Hospital who underwent ODX tests (May 2014–April 2020). YAP1 nuclear localization was evaluated via immunohistochemical staining and its clinical correlation with clinicopathological parameters, including RS, was analyzed. Public datasets TCGA-BRCA and METABRIC validated clinical outcomes. Results: YAP1 expression negatively correlated with ODX RS (OR 0.373, <i>p</i> = 0.002). Elevated YAP1 mRNA levels corresponded to better clinical outcomes, specifically in ER-positive patients, with significant results in METABRIC and TCGA-BRCA datasets (<i>p</i> < 0.0001 OS in METABRIC, <i>p</i> = 0.00085 RFS in METABRIC, <i>p</i> = 0.040 DFS in TCGA-BRCA). In subsets with varying ESR1 mRNA expression and pronounced YAP1 expression, superior survival outcomes were consistently observed. Conclusion: YAP1 may be a valuable prognostic marker and potential therapeutic target in HR+HER2− breast cancer patients.https://www.mdpi.com/2072-6694/15/20/5034breast neoplasmsYes-associated protein 1prognosisreceptorsestrogenpathology
spellingShingle Inho Park
Yangkyu Lee
Jee Hung Kim
Soong June Bae
Sung Gwe Ahn
Joon Jeong
Yoon Jin Cha
YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation
Cancers
breast neoplasms
Yes-associated protein 1
prognosis
receptors
estrogen
pathology
title YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation
title_full YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation
title_fullStr YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation
title_full_unstemmed YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation
title_short YAP1 Expression in HR+HER2− Breast Cancer: 21-Gene Recurrence Score Analysis and Public Dataset Validation
title_sort yap1 expression in hr her2 breast cancer 21 gene recurrence score analysis and public dataset validation
topic breast neoplasms
Yes-associated protein 1
prognosis
receptors
estrogen
pathology
url https://www.mdpi.com/2072-6694/15/20/5034
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