Poster Session Abstracts最新文献

{"title":"Abstract PS12-09: Pre-operative pembrolizumab (Pembro) with radiation therapy (RT) in patients with operable triple-negative breast cancer (TNBC)","authors":"H. McArthur, S. Shiao, S. Karlan, R. Basho, F. Amersi, B. Arnold, M. Burnison, A. Chung, C. Chung, C. Dang, A. Giuliano, Nimmi S. Kapoor, Negin Habibi Khameneh, S. Knott, Cynthia Martin, P. McAndrew, M. Mita, D. Park, C. Abaya, A. Ho","doi":"10.1158/1538-7445.sabcs20-ps12-09","DOIUrl":"https://doi.org/10.1158/1538-7445.sabcs20-ps12-09","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74960022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS1-12: Factors associated with chronic breast lymphedema after adjuvant radiation in women undergoing breast conservation therapy","authors":"S. Rama, Cara Canella, Jenna Luker, Kelley Park, R. Barry, Saheli Ghosh, Simeng Zhu, Yalei Chen, J. Bensenhaver, E. Walker, K. Levin, D. Atisha, M. Evangelista","doi":"10.1158/1538-7445.SABCS20-PS1-12","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS20-PS1-12","url":null,"abstract":"Purpose/Objective(s):Unlike temporary breast edema caused by post-lumpectomy radiation therapy (RT), the edema that persists beyond one year is not well defined and difficult to treat. The aim of this study is to define the incidence and risk factors for the development of chronic breast lymphedema in women undergoing lumpectomy with RT at a large metropolitan cancer center. Materials/Methods:A retrospective chart review was performed on all patients who underwent lumpectomy from 2014 to 2018. Women who did not undergo RT at our institution and those with stage IV disease were excluded from the analysis. Patient demographics, comorbidities, operative data, RT data and postoperative complications were obtained. Chronic breast lymphedema (CBL) was defined as edema that persisted beyond one year post completion of radiation therapy. Breast volumes were determined by contoured breast volumes or, if unavailable, estimated by the 95% isodose volumes from the RT treatment planning system. Using a density curve, the distribution of breast volumes was plotted for patients with and patients without CBL. Univariate analysis was used to evaluate factors associated with CBL. Multivariate regression analysis was used to evaluate factors associated with the risk of CBL while accounting for potential confounding variables as defined by the univariate analysis. Results:A total of 1173 patients were included for analysis. Seventy-four (6.3%) patients developed breast lymphedema beyond one year. For the entire cohort, mean age was 63 years old (SD=11.17), mean BMI was 31.15 kg/m2 (SD=7.17), mean breast volume was 1198.54 cm3 (SD=645.82 cm3), mean total radiation was 59.18 Gy (SD=16.76), and 139 (11.8%) patients underwent ALND. Compared to the cohort that did not develop CBL (n=1099), the CBL cohort (n=74) had a higher median BMI (33.23 kg/m2 vs. 29.81 kg/m2, P Conclusion:Chronic breast lymphedema presents a clinical concern for women undergoing lumpectomy with postoperative radiation, particularly in women with larger breasts. Further studies should focus on preventative strategies, as well as the psychosocial and economic impact of this morbidity. Citation Format: Sanjay Rama, Cara Canella, Jenna Luker, Kelley Park, Renee Barry, Saheli Ghosh, Simeng Zhu, Yalei Chen, Jessica Bensenhaver, Eleanor Walker, Kenneth Levin, Dunya Atisha, Maristella Evangelista. Factors associated with chronic breast lymphedema after adjuvant radiation in women undergoing breast conservation therapy [abstract]. In: Proceedings of the 2020 San Antonio Breast Cancer Virtual Symposium; 2020 Dec 8-11; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2021;81(4 Suppl):Abstract nr PS1-12.","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85123382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS10-10: Ribociclib + letrozole in premenopausal patients with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2−) advanced breast cancer (ABC): Subgroup analysis of the phase IIIb CompLEEment-1 trial","authors":"H. A. Razeq, P. Cottu, A. Ring, M. de Laurentiis, Janice M. Lu, H. Azim, C. Zamagni, K. Zhou, Jiwen Wu, L. Menon-Singh, Miguel Martín","doi":"10.1158/1538-7445.sabcs20-ps10-10","DOIUrl":"https://doi.org/10.1158/1538-7445.sabcs20-ps10-10","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88385273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS1-21: Molecular fluorescence-guided surgery using Beva800 for the assessment of tumor margins during breast conserving surgery of patients with primary breast cancer (MARGIN-II)","authors":"H. Kolberg, C. Röhm, A. Stachs, F. Schütz, J. Blohmer, S. Wetzig, S. Hartmann, J. Heil, M. Hahn","doi":"10.1158/1538-7445.SABCS20-PS1-21","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS20-PS1-21","url":null,"abstract":"\u0000 Introduction: The goal of breast conserving surgery (BCS) for early breast cancer (EBC) is to remove the tumor in toto and preserving as much of the normal breast tissue as possible. In 20-50% of cases a re-excision is necessary because of involved margins. Repeat surgeries are not only a burden to patients physically but also psychologically and can delay recommended adjuvant therapies. Accurate determination of tumor margins during surgery is therefore a critical need. Breast cancer tissue produces significantly higher amounts of VEGF-A than healthy tissue. VEGF-A stimulates tumor angiogenesis and is therefore a target for molecular imaging techniques. The fluorescence imaging agent bevacizumab-IRDye800CW (Beva800) is a conjugate of bevacizumab and IRDye800CW and binds specifically to VEGF-A. Beva800 provides a potentially efficacious approach to imaging specimen and cavity margins during BCS. We are presenting a phase II study that combined Beva800 with the SurgVision Explorer Air camera for intraoperative margin assessment during BCS for EBC. Methods: MARGIN II is a multicenter open-label single arm prospective clinical trial aimed at evaluating Beva800 for assessment of tumor margins in women with EBC scheduled for BCS. The study was a within-patient comparison of positive tumor margin rates using BCS standard of care margin assessment compared to intraoperative assessment with 4.5 mg Beva800 and fluorescence imaging with the SurgVision Explorer Air camera. All patients received an i.-v. bolus injection of 4.5 mg of Beva800 three days before surgery. The fluorescent signal was visualized during surgery using NIR fluorescence imaging (700–1000 nm). Standard of care margin assessment was defined as visual inspection, palpation and, in cases of pre-operative wire marking, specimen sonography or mammography. Beva800 efficacy was determined as the number of patients in which a pathology-confirmed positive margin was identified by fluorescence-guided surgery using Beva800 but not by standard of care BCS. Results: 49 patients were included in 5 centers. 4 training cases were only included in the safety analysis, 45 patients were evaluable for the efficacy analysis. 8 patients (17.8%) had involved margins after standard of care BCS, 4 of which were detected by molecular fluorescence intraoperatively resulting in the reduction of patients with positive margins by 50% (95% CI: 15.7%, 84.3%). 4 patients (8.9%; 95% CI: 2.5%, 21.1%) needed a re-excision because of involved margins. In 27 patients (60.0%) the additional molecular fluorescence guided cavity shaving did not change the resection status from positive to negative (false positive). Adverse events were reported by 16 of 49 patients (32.7%), but only 3 (6.1%) were related to Beva800 (syncope, hot flush, hypertensive crisis). One patient experienced a treatment related SAE (hypertensive crisis). No anti-Beva800 antibodies were detected. Conclusion: In our analysis the rate of necessary second op","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76804210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS6-01: How low is low risk: MINDACT updated outcome and treatment benefit in patients considered clinical low risk and stratified by genomic signature, age and nodal status","authors":"L. J. van ’t Veer, Fatima Cardoso, C. Poncet, J.Lopes Cardozo, S. Delaloge, J. Pierga, P. Vuylsteke, E. Brain, G. Viale, S. Kümmel, I. Rubio, G. Zoppoli, Alistair Thompson, E. Matos, K. Zaman, S. Knox, F. Hilbers, A. Peric, B. Meulemans, Martine Picccart, E. J. Th. Rutgers","doi":"10.1158/1538-7445.sabcs20-ps6-01","DOIUrl":"https://doi.org/10.1158/1538-7445.sabcs20-ps6-01","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73194072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS6-25: Cts5 tested in a Brazilian population: A tool that can predict global survival in early breast cancer ER+/HER2-, as well as the response to extended endocrine therapy","authors":"L. Vian, R. P. Souza, V. C. C. Lima, Daniella Yumi Tsuji Honda, S. T. Pacheco, Caio Dabbous de Liz, L. Gomes, Bruno Cezar Mendonça Uchôa Júnior, P. Guimarães, Celso Silva e Souza Filho, A. Guimarães, M. F. Simões, M. Donadio, Â. Fêde, A. Saito, A. Ribeiro, Joyce Maria L. Maia, I.K.F. Lustosa, F. Sanchez Castro, M. C. Tavares, M. Cesca, M. Corassa, N. Pondé, S. Sanches","doi":"10.1158/1538-7445.SABCS20-PS6-25","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS20-PS6-25","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74449309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS14-03: Ribociclib + letrozole in male patients with hormone receptor-positive (HR+), human epidermal growth factor receptor-2-negative (HER2−) advanced breast cancer (ABC): Subgroup analysis of the phase IIIb CompLEEment-1 trial","authors":"M. Campone, M. de Laurentiis, C. Zamagni, I. Kudryavcev, M. Agterof, U. Brown-Glaberman, M. Pálácova, S. Chatterjee, L. Menon-Singh, Jiwen Wu, K. Zhou, Miguel Martín","doi":"10.1158/1538-7445.sabcs20-ps14-03","DOIUrl":"https://doi.org/10.1158/1538-7445.sabcs20-ps14-03","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76099254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS2-31: Circulating miR-99a-5p expression in plasma: A potential biomarker for early diagnosis of breast cancer","authors":"I. Garrido-Cano, V. Constâncio, A. Adam-Artigues, A. Lameirinhas, S. Simón, B. Ortega, M. T. Martínez, C. Hernando, B. Bermejo, A. Lluch, P. Lopes, R. Henrique, C. Jerónimo, J. Cejalvo, P. Eroles","doi":"10.1158/1538-7445.SABCS20-PS2-31","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS20-PS2-31","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78362214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS18-38: Comparative analysis of differentially abundant proteins quantified by LC-MS/MS between flash frozen and laser microdissected OCT-embedded breast tumor samples","authors":"Lori A. Sturtz, Guisong Wang, Punit Shah, R. Searfoss, Praveen-Kumar Raj-Kumar, J. Hooke, J. Fantacone-Campbell, B. Deyarmin, M. Cutler, R. Sarangarajan, N. Narain, Hai Hu, M. Kiebish, A. Kovatich, C. Shriver","doi":"10.1158/1538-7445.SABCS20-PS18-38","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS20-PS18-38","url":null,"abstract":"Background: Proteomic studies are typically conducted using flash-frozen (FF) samples utilizing tandem mass spectrometry. However, FF samples are comprised of multiple cell types, making it difficult to ascertain the proteomic profiles of specific cells. Conversely, OCT-embedded (Optimal Cutting Temperature compound) specimens can undergo laser microdissection (LMD) to capture and study specific cell types separately from the cell mixture. In the current study, we compared proteomic data obtained from FF and OCT samples to determine if samples that are stored and processed differently produce comparable results. Methods: Proteins were extracted from FF and OCT-embedded invasive breast tumors from 5 female patients. FF samples were lysed via homogenization (FF/HOM) while OCT-embedded specimens underwent LMD to collect only tumor cells (OCT/LMD-T) or both tumor and stromal cells (OCT/LMD-TS) followed by incubation at 37°C. Proteins were extracted using the illustra triplePrep kit and then trypsin-digested, TMT-labeled, and processed by two-dimensional liquid chromatography-tandem mass spectrometry (2D LC-MS/MS). Proteins were identified and quantified with Proteome Discoverer v1.4 and comparative analyses performed to identify proteins that were significantly differentially expressed amongst the different processing methods. Results: Among 4,950 proteins consistently quantified across all samples, 216 and 171 proteins were significantly differentially expressed (adjusted p-value 1) between FF/HOM vs. OCT/LMD-T and FF/HOM vs. OCT/LMD-TS, respectively, with most proteins being more highly abundant in the FF/HOM samples. PCA and unsupervised hierarchical clustering analysis with these 216 and 171 proteins were able to distinguish FF/HOM from OCT/LMD-T and OCT/LMD-TS samples, respectively. Likewise, PCA analysis and unsupervised clustering analysis using the 402 and 60 significantly differentially enriched GO terms (adjusted p-value (BH) Citation Format: Lori A. Sturtz, Guisong Wang, Punit Shah, Richard Searfoss, Praveen-Kumar Raj-Kumar, Jeffrey A. Hooke, J. Leigh Fantacone-Campbell, Brenda Deyarmin, Mary Lou Cutler, Rangaprasad Sarangarajan, Niven R. Narain, Hai Hu, Michael A. Kiebish, Albert J. Kovatich, Craig D. Shriver. Comparative analysis of differentially abundant proteins quantified by LC-MS/MS between flash frozen and laser microdissected OCT-embedded breast tumor samples [abstract]. In: Proceedings of the 2020 San Antonio Breast Cancer Virtual Symposium; 2020 Dec 8-11; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2021;81(4 Suppl):Abstract nr PS18-38.","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89231057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstract PS13-52: Preoperative systemic therapy versus upfront surgery in HER2-positive early breast cancer: A prospective nested case-control study in the real world","authors":"Yang Hongjian, Xingfei Yu, Chen Wang, Zheng Yabing, Huang Jiejie, X. Shao, L. Sheng, Juan Lin, Yuqin Ding, Haojun Xuan, Lijie Gong, W. Feng, Chengdong Qin, Dao-bao Chen, Yang Yu","doi":"10.1158/1538-7445.SABCS20-PS13-52","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS20-PS13-52","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88659192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}