Breast Cancer Research and Treatment最新文献

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Development of a prediction model for ctDNA detection (Cir-Predict) in breast cancer. 乳腺癌ctDNA检测预测模型(cirr - predict)的建立。
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-07 DOI: 10.1007/s10549-025-07647-0
Chiaki Nakauchi, Nanae Masunaga, Naofumi Kagara, Chiya Oshiro, Masafumi Shimoda, Kenzo Shimazu
{"title":"Development of a prediction model for ctDNA detection (Cir-Predict) in breast cancer.","authors":"Chiaki Nakauchi, Nanae Masunaga, Naofumi Kagara, Chiya Oshiro, Masafumi Shimoda, Kenzo Shimazu","doi":"10.1007/s10549-025-07647-0","DOIUrl":"10.1007/s10549-025-07647-0","url":null,"abstract":"<p><strong>Purpose: </strong>The detection of circulating tumor DNA (ctDNA) is a valuable method to predict the risk of recurrence and to detect real-time gene changes. The amount of ctDNA is affected by many factors. Moreover, the detection rate of ctDNA varies from report to report.</p><p><strong>Methods: </strong>The present study evaluated differentially expressed genes using a DNA microarray assay for gene expression in tumors with and without detected ctDNA and constructed a prediction model for the detectability of ctDNA in breast tumor tissues. The model, named Cir-Predict, consisted of 126 probe sets (111 genes) and was constructed in a training set of breast cancer patients (n = 35) and validated in a validation set (n = 13).</p><p><strong>Results: </strong>The accuracy, sensitivity, and specificity in training and validation sets were over 90%, and Cir-Predict was significantly associated with ctDNA detection independently of the other conventional clinicopathological parameters in training and validation sets (P < 0.001, P = 0.014, respectively). Cir-Predict (+) was significantly associated with worse recurrence-free survival (P = 0.006). Pathway analysis revealed that nine pathways including tight junction and cell cycle tended to be related to ctDNA detectability.</p><p><strong>Conclusion: </strong>Cir-Predict not only provides information useful for breast cancer treatment, but also helps the understanding of the mechanism by which ctDNA is detected.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"331-339"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006266/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143584699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic counseling referral rates and genetic testing outcomes in women with young breast cancer: a 20-year Canadian review. 年轻乳腺癌妇女遗传咨询转诊率和基因检测结果:加拿大20年回顾
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-02-22 DOI: 10.1007/s10549-025-07646-1
Susan Randall Armel, Janet Malcolmson, Alexandra Volenik, Manjula Maganti, Nicholas Watkins, George S Charames, Jeanna McCuaig
{"title":"Genetic counseling referral rates and genetic testing outcomes in women with young breast cancer: a 20-year Canadian review.","authors":"Susan Randall Armel, Janet Malcolmson, Alexandra Volenik, Manjula Maganti, Nicholas Watkins, George S Charames, Jeanna McCuaig","doi":"10.1007/s10549-025-07646-1","DOIUrl":"10.1007/s10549-025-07646-1","url":null,"abstract":"<p><strong>Purpose: </strong>Despite guidelines recommending genetic testing for all cases of very young breast cancer (VYBC), poor uptake has been reported. This study aimed to examine genetic testing referral rates and outcomes over a 20-year period within the Canadian context.</p><p><strong>Methods: </strong>A retrospective chart review of all incident VYBC cases (at or below 35 years of age) between January 1, 2000 and December 31, 2019 was conducted. Descriptive statistics were used to summarize demographic factors and logistic regression analyses were performed to identify the predictors associated with referral for genetic counseling and positive genetic test results.</p><p><strong>Results: </strong>628 women were identified with VYBC. Most women presented with stage 2 (42%), hormone receptor-positive (HR +) and HER2-negative (54%) invasive ductal carcinoma (94%). Over the study period, referral rates increased from 44 to 84%. Of women initially tested for BRCA1/BRCA2, only 21% were referred for updated panel testing. Among those tested, 19% had a pathogenic variant, 21% of whom reported no family history of cancer. Predictors of referral included stage 0-2 disease while predictors of positive test results included a second breast cancer diagnosis and positive family history.</p><p><strong>Conclusion: </strong>Despite guidelines based on age alone, barriers to referral persist. Results of this study suggest the need for new models of care that ensure equitable access to genetic testing for all women diagnosed with VYBC regardless of family history, ethnicity, or disease stage. As genetic testing criteria evolve, protocols must address these barriers to prevent missed opportunities for testing.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"321-330"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143476276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Critical appraisal of a data mining model for predicting nodal response to neoadjuvant treatment in breast cancer. 预测乳腺癌新辅助治疗淋巴结反应的数据挖掘模型的关键评价。
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-21 DOI: 10.1007/s10549-025-07686-7
Janhavi Venkataraman, Kefah Mokbel
{"title":"Critical appraisal of a data mining model for predicting nodal response to neoadjuvant treatment in breast cancer.","authors":"Janhavi Venkataraman, Kefah Mokbel","doi":"10.1007/s10549-025-07686-7","DOIUrl":"10.1007/s10549-025-07686-7","url":null,"abstract":"","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"753-754"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved breast cancer diagnosis using a CA15-3 capture antibody-lectin sandwich assay. 利用 CA15-3 捕获抗体-选择素夹心测定改进乳腺癌诊断。
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-27 DOI: 10.1007/s10549-025-07672-z
S Nikseresht, L K Shewell, C J Day, M P Jennings, H Chittoory, A E McCart Reed, P T Simpson, S R Lakhani, R Nabiee, M Moore, R Khanabdali, L M Hinch, G E Rice
{"title":"Improved breast cancer diagnosis using a CA15-3 capture antibody-lectin sandwich assay.","authors":"S Nikseresht, L K Shewell, C J Day, M P Jennings, H Chittoory, A E McCart Reed, P T Simpson, S R Lakhani, R Nabiee, M Moore, R Khanabdali, L M Hinch, G E Rice","doi":"10.1007/s10549-025-07672-z","DOIUrl":"10.1007/s10549-025-07672-z","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to test the hypothesis that an enzyme-linked antibody-lectin sandwich assay for a glycovariant of CA15-3 can deliver better diagnostic performance, defined by classification accuracy, sensitivity and specificity, for breast cancer compared to an existing FDA-approved CA15-3 test.</p><p><strong>Methods: </strong>A genetically engineered lectin (SubB2M) that specifically binds N-glycolylneuraminic acid (Neu5Gc) was used as a detection reagent in a CA15-3 capture antibody-lectin sandwich (neuCA15-3) assay. In a case: control cohort equivalence study the classification accuracy for the neuCA15-3 assay was determined and compared to an FDA-approved CA15-3 IVD test (Elecsys CA15-3 II, Roche Diagnostics).</p><p><strong>Results: </strong>Classification accuracy and AUC for neuCA15-3 were 81% and 0.886 ± 0.015 (standard error, n = 567) and for Elecsys CA15-3 II, 55% and 0.642 ± 0.023 (n = 558), respectively. At a threshold cut-off serum concentration of 23.6 units/ml, overall breast cancer classification accuracy of the neuCA15-3 was 81% (compared to 55% for the comparator assay, p < 0.001). At 95% specificity, the sensitivity of the neuCA15-3 assay was 69.5%, significantly greater than the comparator assay (11.9%, p < 0.001). neuCA15-3 concentrations did not vary significantly with breast cancer receptor subtype or comorbidities tested.</p><p><strong>Conclusions: </strong>The diagnostic performance of neuCA15-3 was substantially improved by specifically targeting both a CA15-3 protein epitope and a pan-cancer glycan (Neu5Gc) epitope (the specific binding target of SubB2M). The reporter signal generated depends on the colocalization of the cancer antigen protein epitope and the aberrant sialylation of the protein, thus increasing the assay specificity. The presence of multiple Neu5Gc lectin-binding sites per glycoprotein molecule increases signal generation and assay sensitivity. The inclusion of additional cancer biomarkers in a multivariate index assay format may further increase diagnostic performance for breast cancer.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"605-615"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12031999/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143728641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oncotype DX recurrence score in node-positive patients in the post-RxPONDER era: a single-institution experience. 后rxponder时代淋巴结阳性患者的Oncotype DX复发评分:单一机构经验
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-03 DOI: 10.1007/s10549-025-07661-2
Rachel Han, Edi Brogi, Donna Thompson, Mahmoud El-Tamer, Monica Morrow, Hannah Y Wen
{"title":"Oncotype DX recurrence score in node-positive patients in the post-RxPONDER era: a single-institution experience.","authors":"Rachel Han, Edi Brogi, Donna Thompson, Mahmoud El-Tamer, Monica Morrow, Hannah Y Wen","doi":"10.1007/s10549-025-07661-2","DOIUrl":"10.1007/s10549-025-07661-2","url":null,"abstract":"<p><strong>Purpose: </strong>RxPONDER showed that in postmenopausal women with early-stage hormone receptor + /HER2- breast cancer (BC) with 1-3 positive axillary lymph nodes (LN) and a recurrence score ≤ 25, the addition of chemotherapy to endocrine therapy did not improve distant recurrence-free survival. We sought to evaluate Oncotype DX recurrence score (ODX RS) distribution in LN negative and LN positive patients aged ≥ 50 years (y) and to determine clinicopathologic factors associated with RS.</p><p><strong>Methods: </strong>ODX RS, demographic, and pathologic information was collected for patients with ER + /HER2- BC with 0 (patients < 50y) or 0-3 positive (patients ≥ 50y) LN treated at our institution between January 2021 and December 2022. Statistical analyses were conducted using Pearson chi-square and two-tailed t tests.</p><p><strong>Results: </strong>The study cohort included 2378 BC from 2285 women. Among women ≥ 50y, there was no significant difference in RS distribution between pN0, pN1mi, and pN1a patients; with 85.4%, 86.5%, and 81% having a RS ≤ 25, respectively. Among LN + women ≥ 50y, RS > 25 was significantly associated with higher grade (P = .001), lower ER (P = .007), and lower PR (P < .001). Among LN- women ≥ 50y, RS > 25 was significantly associated with higher grade (P < .001), lower ER (P < .001), and lower PR (P < .001).</p><p><strong>Conclusion: </strong>ODX RS distribution among LN + and LN- women aged ≥ 50y was similar. In this population, RS is significantly associated with tumor grade, ER, and PR, regardless of LN status. In our post-RxPONDER era cohort, over 80% of women aged ≥ 50y with early-stage ER + /HER2- BC with ≤ 3 positive axillary LN would be spared chemotherapy based on RS, regardless of nodal status.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"449-454"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143536540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identifying gene expression predictive of response to neoadjuvant endocrine therapy in early breast cancer. 鉴别早期乳腺癌新辅助内分泌治疗反应的基因表达预测。
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-04-09 DOI: 10.1007/s10549-025-07693-8
Kaori Hidaka, Lisa Goto-Yamaguchi, Aiko Sueta, Mai Tomiguchi, Yutaka Yamamoto
{"title":"Identifying gene expression predictive of response to neoadjuvant endocrine therapy in early breast cancer.","authors":"Kaori Hidaka, Lisa Goto-Yamaguchi, Aiko Sueta, Mai Tomiguchi, Yutaka Yamamoto","doi":"10.1007/s10549-025-07693-8","DOIUrl":"https://doi.org/10.1007/s10549-025-07693-8","url":null,"abstract":"<p><strong>Purpose: </strong>Estrogen receptor (ER)-positive breast cancer is the most common subtype, accounting for approximately 80% of cases, with endocrine therapy as the standard postoperative treatment. However, despite risk-reducing therapies, the risk of recurrence remains substantial. Studies, including the POETIC trial, have demonstrated that low Ki67 levels following short-term neoadjuvant endocrine therapy (sNAET) are associated with a favorable prognosis. The objective of this study is to identify genes associated with the suppression of cell cycle progression by sNAET in postmenopausal patients with ER-positive/human epidermal growth factor receptor 2-negative breast cancer.</p><p><strong>Methods: </strong>Ninety-seven tissue samples were collected and classified into groups based on Ki67 expression levels before and after treatment. RNA sequencing and real-time quantitative reverse transcription PCR were performed to analyze gene expression in tumor samples from patients stratified into High-High (H-H) or High-Low (H-L) groups based on Ki67 levels before and after sNAET.</p><p><strong>Results: </strong>Among the differentially expressed genes identified, CXCL9 and ABCA12 were significantly upregulated in the H-H group and were associated with a poor response to endocrine therapy. Conversely, NPY1R was significantly upregulated in the H-L group, suggesting greater responsiveness. In multivariate logistic regression analysis, CXCL9 (OR: 0.65, p = 0.024) and NPY1R (OR: 1.61, p = 0.048) were significant predictors of Ki67 reduction.</p><p><strong>Conclusion: </strong>These findings suggest that CXCL9 and NPY1R could serve as predictive biomarkers for endocrine therapy response. Identifying these biomarkers may facilitate personalized treatment strategies, including the addition of therapies such as chemotherapy for resistant cases.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":"211 3","pages":"717-725"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12031974/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143977099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The impact of loco-regional treatment on ipsilateral breast cancer recurrence and outcomes in carriers of BRCA1/2 pathogenic variants. 局部区域治疗对BRCA1/2致病变异携带者同侧乳腺癌复发和预后的影响
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-05 DOI: 10.1007/s10549-025-07658-x
Rinat Bernstein-Molho, Ory Haisraely, Shira Galper, Narmeen Abu-Shhada, Einav Nili Gal-Yam, Tehillah S Menes, Philip Poortmans, Orit Kaidar-Person
{"title":"The impact of loco-regional treatment on ipsilateral breast cancer recurrence and outcomes in carriers of BRCA1/2 pathogenic variants.","authors":"Rinat Bernstein-Molho, Ory Haisraely, Shira Galper, Narmeen Abu-Shhada, Einav Nili Gal-Yam, Tehillah S Menes, Philip Poortmans, Orit Kaidar-Person","doi":"10.1007/s10549-025-07658-x","DOIUrl":"10.1007/s10549-025-07658-x","url":null,"abstract":"<p><strong>Purpose: </strong>Our previous data showed that carriers of germline BRCA1/2 pathogenic variants (PV) with breast cancer (BC) treated with mastectomy without post-mastectomy radiation therapy (PMRT) had higher rates of loco-regional recurrence (LRR) compared to those who underwent PMRT or breast-conserving therapy (BCT), despite earlier stage BC. Our aim was to verify our previous findings in a larger cohort.</p><p><strong>Methods: </strong>Clinical data were extracted from the medical records of BRCA1/2 mutation carriers with BC, treated at a single institution between 1/2006 and12/2022. The data included demographics, treatment modalities, and BC outcomes.</p><p><strong>Results: </strong>A total of 464 patients with 484 primary tumors were analyzed. Of these, 48.3% mastectomies were performed: 66% (154) without PMRT (non-PMRT) and 34% (80) with PMRT; 51.8% (250) underwent BCT. The non-PMRT group had earlier disease stages at diagnosis (77.3% were Tis and T1N0 stage) compared to the PMRT and BCT groups (3.8% and 45%, respectively, p < 0.001). During the study period with a median follow-up time of 75 months (range 12-211), the LRR rate was 13% (20/154) in the non-PMRT cohort compared with 1.25% (1/80) in the PMRT group (p = 0.003), and 6.4% (16/250) in the BCT group (p = 0.03). Cumulative incidence of LRR at 5 and 15 years was 14.7%, and 16.6% in the non-PMRT, compared to 5.1% and 35% in the BCT group, respectively (p = 0.081). No significant difference in overall survival was observed (p = 0.202).</p><p><strong>Conclusions: </strong>The timing and rates of LRRs differ according to the loco-regional therapy, which might indicate a different etiology driving these events.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"431-439"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006241/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comment on ''patient preferences for CDK4/6 inhibitor treatments in HR + /HER2- early breast cancer: a discrete choice survey study''. 评论“患者对CDK4/6抑制剂治疗HR + /HER2-早期乳腺癌的偏好:一项离散选择调查研究”。
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-27 DOI: 10.1007/s10549-025-07673-y
Wei Zhang, Shenghong Shi, Ying Hong
{"title":"Comment on ''patient preferences for CDK4/6 inhibitor treatments in HR + /HER2- early breast cancer: a discrete choice survey study''.","authors":"Wei Zhang, Shenghong Shi, Ying Hong","doi":"10.1007/s10549-025-07673-y","DOIUrl":"10.1007/s10549-025-07673-y","url":null,"abstract":"","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"545-546"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143728625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Treatment patterns and outcomes in HER2-low metastatic breast cancer patients previously treated with chemotherapy: a US real-world cohort study. 先前接受过化疗的her2低转移性乳腺癌患者的治疗模式和结果:一项美国真实世界队列研究
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-25 DOI: 10.1007/s10549-025-07649-y
Shanu Modi, Suyuan Zhang, Danalyn Byng, Shannon Hunter, Alessandria Strübing, Yan Xiong, Kyle Dunton, Zacharie Mbanya, William Jacot
{"title":"Treatment patterns and outcomes in HER2-low metastatic breast cancer patients previously treated with chemotherapy: a US real-world cohort study.","authors":"Shanu Modi, Suyuan Zhang, Danalyn Byng, Shannon Hunter, Alessandria Strübing, Yan Xiong, Kyle Dunton, Zacharie Mbanya, William Jacot","doi":"10.1007/s10549-025-07649-y","DOIUrl":"10.1007/s10549-025-07649-y","url":null,"abstract":"<p><strong>Purpose: </strong>Real-world outcomes are poorly understood for patients with human epidermal growth factor receptor 2 (HER2)-low (immunohistochemistry 1+ or 2+ with negative in situ hybridization) metastatic breast cancer (mBC).</p><p><strong>Methods: </strong>Using for the first time a nationwide electronic health record-derived de-identified database, we assessed demographics, treatment patterns, and outcomes of patients with HER2-low mBC who previously received one line of chemotherapy in the metastatic setting. The post-chemotherapy line was termed the index line of therapy (LOT).</p><p><strong>Results: </strong>3765 patients [hormone receptor (HR)-positive: 78.8%, HR-negative: 21.0%] met the inclusion criteria (1 January 2011-30 April 2023). 61.7% of HR-positive patients received endocrine therapy prior to the index LOT. The largest patient percentage received single-agent chemotherapy at the index and subsequent two LOTs. For the overall cohort, the median real-world time to treatment discontinuation/death was 4.1 months (95% CI: 3.9-4.2) and the median real-world time to next treatment/death was 5.1 months (95% CI: 4.8-5.3) from the index LOT. Median real-world overall survival (all patients) was 15.8 months (95% confidence interval: 15.2-16.5, median follow-up = 54.5 months) from the index LOT.</p><p><strong>Conclusion: </strong>These data highlight the unmet clinical needs of patients with HER2-low mBC by characterizing the treatment patterns and poor outcomes in this population on the current standard of care.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"351-362"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006274/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143708575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Population attributable risk of a competing-risk model for breast cancer and non-breast cancer death among women ≥ 65 years. ≥65岁妇女乳腺癌和非乳腺癌死亡的竞争风险模型的人口归因风险
IF 3 3区 医学
Breast Cancer Research and Treatment Pub Date : 2025-06-01 Epub Date: 2025-03-25 DOI: 10.1007/s10549-025-07683-w
Mara A Schonberg, Emily A Wolfson, A Heather Eliassen, Bernard A Rosner, Andrea Z LaCroix, Rebecca A Nelson, Rowan T Chlebowski, Long H Ngo
{"title":"Population attributable risk of a competing-risk model for breast cancer and non-breast cancer death among women ≥ 65 years.","authors":"Mara A Schonberg, Emily A Wolfson, A Heather Eliassen, Bernard A Rosner, Andrea Z LaCroix, Rebecca A Nelson, Rowan T Chlebowski, Long H Ngo","doi":"10.1007/s10549-025-07683-w","DOIUrl":"10.1007/s10549-025-07683-w","url":null,"abstract":"<p><strong>Purpose: </strong>To inform decision making around mammography-screening frequency and cessation, we previously used Fine-Gray competing-risk regression to develop and validate a model to estimate older women's 10-year risk of breast cancer and their competing risk of non-breast cancer (non-BC) death. Here, we aimed to understand the amount of incident breast cancer and non-BC death risk explained by our model among women ≥ 65y.</p><p><strong>Methods: </strong>We included women ≥ 65y who completed the 2004 Nurses' Health Study questionnaire (NHS, n = 59,662) or who participated in the Women's Health Initiative-Extension Study (WHI-ES, n = 82,528). We calculated our model's full and risk factor-specific population attributable risk (PAR%) for incident breast cancer and non-BC death.</p><p><strong>Results: </strong>Mean age of the NHS participants was 73.5y (SD 5.2); 3.1% were diagnosed with breast cancer and 26.1% experienced non-BC death within 10 years. Mean age of WHI-ES participants was 73.6y (SD 5.4); 4.2% were diagnosed with breast cancer and 17.7% experienced non-BC death within 10 years. The full-model PAR% for breast cancer was 58.8% (22.7-80.6) in NHS and 54.8% (24.8-75.2%) in WHI-ES. Modifiable risk factors explained approximately 1/3 of breast cancer risk; BMI ≥ 30 had a PAR% of 6.5% (3.1-9.9%) in NHS and 12.2% (8.5-16.0%) in WHI-ES. For non-BC death, the full-model PAR% was 94.2% (91.4-96.1%) in NHS and 86.2% (80.9-90.0%) in WHI-ES.</p><p><strong>Conclusions: </strong>Our competing-risk model explained the majority of breast cancers and non-BC deaths in women ≥ 65y, and we identified risk factors (e.g., elevated BMI) that may be targeted to reduce the burden of breast cancer in older women.</p>","PeriodicalId":9133,"journal":{"name":"Breast Cancer Research and Treatment","volume":" ","pages":"687-698"},"PeriodicalIF":3.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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