Poster Session Abstracts最新文献

{"title":"Abstract P6-02-14: Not presented","authors":"W. Xing, Q. Li, G. Sun, R. Cao, B. Chen, C. Jiang, L. Ma, K. Wang","doi":"10.1158/1538-7445.SABCS18-P6-02-14","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P6-02-14","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82966992","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 P3-08-09: The 21-gene recurrence score and chemotherapy use in triple negative breast cancer (TNBC) and HER2 positive breast cancer: A National Cancer Database study","authors":"J. Boughey, T. Hoskin, D. Cocco, C. Day, R. Leon-Ferre, E. Habermann, M. Goetz","doi":"10.1158/1538-7445.SABCS18-P3-08-09","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P3-08-09","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85532378","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 P2-09-15: A phase I study of interferon-gamma (γ)plus weekly paclitaxel, trastuzumab and pertuzumab in patients with HER-2 positive breast cancer","authors":"H. Han, H. Khong, R. Costa, L. Loftus, D. Goodridge, T. Henry, H. Soliman, R. Ismail-Khan, B. Fridley, B. Czerniecki","doi":"10.1158/1538-7445.SABCS18-P2-09-15","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P2-09-15","url":null,"abstract":"Background: IFN-γ, a cytokine that plays diverse roles in innate and adaptive immunity, has been shown to be essential in anti-tumor immune response. In vitro and in vivo studies have shown the synergistic effect of IFN-γ in combination with HER2-targeting monoclonal antibodies with or without taxane chemotherapy. We have conducted a phase 1 clinical trial of systemic IFN-γ in combination with trastuzumab, pertuzumab, and paclitaxel in HER2-positive metastatic breast cancer. Methods: Two dose levels (DL) of IFN-γ, 50 (DL1) and 75 mcg/m2 (DL2), were evaluated. IFN-γ was given as subcutaneous injection three times weekly starting on day 1 of therapy for 12 weeks. Paclitaxel was administered intravenously (IV) weekly at 80mg/m2 in combination with trastuzumab IV (8 mg/kg loading dose, then 6 mg/m2 q 21 days) and pertuzumab IV (840 mg loading dose, then 420 mg q 21 days). Eligible patients had measurable metastatic HER2-positive breast cancer, were candidates to receive paclitaxel chemotherapy, and had an ECOG PS 0-1. The primary objective of this study was to evaluate the safety and tolerability of the combination therapy during the 12 weeks of treatment and to determine the recommended phase II dose (RP2D). Dose-limiting toxicity (DLT) during cycle one was defined as follows: Non-hematologic or hematologic toxicities that are ≥ grade 3 and probably or definitely related to study therapy which lead to chemotherapy treatment delays > 14 days. Results: A total of nine patients (3 on DL1 and 6 on DL2) were enrolled between 2/2017 and 11/2017. No DLT was observed. For DL1, no serious adverse events (SAE) or significant adverse events (AE) were observed among 3 patients who completed 12 weeks of treatment. For DL2, two out of 6 patients had SAEs including grade 3 pneumonitis (at week 8; treatment was subsequently discontinued) and grade 3 non-neutropenic fever (at week 6), which were possibly related to study treatment. These toxicities, however, did not meet the protocol definition of DLT. Based on these findings suggesting an improved tolerability of DL1 (50 mcg/m2), DL1 was selected as the RP2D. The most frequently observed grade 1 and 2 AEs that were at least possibly related to IFN-γ were fatigue (45%) nausea (36%), myalgia (36%), and fever (27%) diarrhea (18%). No grade 4 AE was noted. Grade 3 AEs included diarrhea, nausea, pneumonitis, non-neutropenic fever. Three out of 9 patients achieved partial response and 6 patients had stable disease per RECIST criteria. Conclusion: IFN-γ in combination with trastuzumab, pertuzumab, and paclitaxel was well tolerated in patients with HER2-positive metastatic breast cancer. Updated results will be presented and the phase 2 neoadjuvant trial is ongoing to further assess the efficacy of this approach. Citation Format: Han HS, Khong H, Costa R, Loftus L, Goodridge D, Henry T, Soliman H, Ismail-Khan R, Fridley B, Czerniecki B. A phase I study of interferon-gamma (γ)plus weekly paclitaxel, trastuzumab and pertuzum","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85693002","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 P6-09-12: Using multiphoton laser scanning microscopy to assess neoadjuvant therapy outcome in core needle biopsies: A novel methodology","authors":"D. Desa, B. Turner, B. Buscaglia, Rl Hill, R. Strawderman, D. Hicks, E. Brown","doi":"10.1158/1538-7445.SABCS18-P6-09-12","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P6-09-12","url":null,"abstract":"Background : Over-expression of Human Epidermal Growth Factor receptor-2 (HER2) in breast cancer is associated with an aggressive clinical course and poor prognosis. Targeting HER2 over-expression has been shown to be a remarkably effective therapeutic modality in the metastatic, adjuvant and neoadjuvant setting and the pathologic response to neoadjuvant treatment in HER2-positive breast cancer has been shown to be an excellent surrogate for a good outcome. The stromal tumor microenvironment is implicated in fostering tumor growth, facilitating cell migration and ultimately resulting in metastatic disease. Specifically, the collagenous extracellular matrix, which includes fibrillar collagen, has been suggested to play a role in the migration of malignant breast epithelial cells within the surrounding stroma. We have developed a novel methodology which uses an intrinsic optical signature to quantitatively evaluate fibrillar collagen (Burke et al. BMC Cancer 15 (2015): 929). Here, we evaluate the ability of this quantitative methodology to predict the pathologic response after neoadjuvant HER2-targeted treatment as assessed by the Residual Cancer Burden score/class (RCB). This quantitative evaluation in pre-treatment biopsies is then correlated with the pathologic response to treatment in the post-therapy resection. Material and Methods : Clinical pathologic variables for 29 cases of HER2-positive breast cancer that had undergone neoadjuvant chemotherapy plus HER2-targeted therapy were retrieved from the medical record database at URMC, including the post-treatment RCB score and ER/PR/HER2 status. Second harmonic generation (SHG) is an intrinsic optical signal produced by fibrillar collagen. To quantify collagen microstructure in the pre-treatment core biopsy, we used SHG imaging to determine the average forward to backward-light scattering ratio (F/B). The F/B ratio is sensitive to structural properties of collagen fibers. Results: Logistic regression was used to assess the association between F/B and the binary response variable RCB class (0/1 or 2/3). A likelihood ratio test was used to calculate the p-value to test whether the regression coefficient for F/B was zero (i.e. no effect) in the tumor-stromal interface. The average F/B ratio at the leading edge of the tumor stratified by RCB class is shown in Table 1. When evaluated in the bulk of the tumor tissue, F/B was not correlated with RCB status; however, when evaluated at the leading edge of the tumor stromal interface, F/B was significantly correlated with RCB status (p=0.035). Conclusions : We have previously shown that the measurement of F/B in the primary tumor after resection is an independent prognostic indicator of metastasis-free survival in breast cancer. Our results in the current study furthers these observations and suggests that the evaluations of the microstructure of collagen fibers by F/B measurement from the pre-treatment biopsy, specifically at the leading edge of the tumor","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84017225","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 P5-07-05: Obesity, adipose inflammation, and race in patients with early stage breast cancer","authors":"N. Iyengar, B. Siegel, M. Malik, D. Giri, J. Tsai, M. Hughes, A. Adam, Samantha Williams, X. Zhou, W. Rodgers, P. Ginter, A. Patel, F. Yong, A. Cherian, P. August, A. Dannenberg","doi":"10.1158/1538-7445.SABCS18-P5-07-05","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P5-07-05","url":null,"abstract":"Background: Elevated body mass index (BMI) is associated with increased risk of estrogen receptor-positive postmenopausal breast cancer. Mechanistically, most individuals with elevated BMI have breast white adipose tissue inflammation (WATi) which confers increased breast cancer risk, particularly in those with existing benign breast disease. Individuals with WATi have elevated in-breast expression of aromatase and several systemic changes that increase breast cancer risk, including hyperinsulinemia and higher levels of C-reactive protein. However, women with normal BMI but high levels of body fat are also likely to harbor WATi and are at increased risk of postmenopausal breast cancer. The accuracy of BMI for assessing adiposity and predicting obesity-related disorders, including cancer, varies across race and ethnicity. Whether the association between BMI and WATi varies by race is unknown. Here we aimed to characterize relationships among breast WATi and clinicopathologic features in a racially diverse cohort undergoing mastectomy for breast cancer treatment. Methods: Non-tumorous breast tissue and fasting blood were collected from women undergoing mastectomy for breast cancer treatment or prevention at a single center serving a racially diverse patient population. Breast WATi was detected by the presence of crown-like structures in the breast (CLS-B), which are composed of a dead/dying adipocyte surrounded by CD68+ macrophages. Clinicopathologic data were abstracted from electronic medical records. Associations among categorical variables were examined using Fisher9s exact test. Relationships between continuous variables were examined using the Spearman correlation. Results: As of May 18, 2018 62 patients have been accrued; median age 55 (range 32 to 84). Self-reported race distribution was: 36 (58%) Asian, 5 African American (8%), 20 (32%) Caucasian, and 1 (2%) unknown. Breast tissue has been analyzed for WATi in 60 cases thus far. Clinicopathologic features stratified by the presence or absence of breast WATi are presented in. Breast WAT inflammation was associated with obesity (P=0.02) and a trend to association was observed with dyslipidemia (P Conclusions: Breast adipose inflammation is associated with elevated BMI and possibly metabolic syndrome disorders in a racially diverse population. These findings are consistent with observations from predominantly Caucasian cohorts. Race-specific characteristics will also be examined. Study accrual is ongoing and updated results will be presented. Citation Format: Iyengar NM, Siegel B, Malik M, Giri DD, Tsai J, Hughes M, Adam A, Williams S, Zhou XK, Rodgers W, Ginter P, Patel A, Yong F, Cherian A, August P, Dannenberg AJ. Obesity, adipose inflammation, and race in patients with early stage breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-07-05.","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77834952","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 P2-13-06: Long term clinical follow up of real world HER2-positive patients since the introduction of trastuzumab","authors":"S. Ellegård, M. Asowed, K. Engvall, Anna-Lotta Hallbeck, Nils Elander, O. Stål","doi":"10.1158/1538-7445.sabcs18-p2-13-06","DOIUrl":"https://doi.org/10.1158/1538-7445.sabcs18-p2-13-06","url":null,"abstract":"Background: The prognosis for patients with HER2-positive early breast cancer (EBC) has improved dramatically since the introduction of adjuvant trastuzumab therapy. With the addition of pertuzumab the prognosis has improved further. However, there is a need to study how these results from clinical controlled trials are transferred to the real-world clinical setting. In this study we aim to investigate all patients with early HER2-positive breast cancer in our region since the introduction of adjuvant trastuzumab to evaluate the implementation of trastuzumab treatment regarding treatment coverage, prognosis and survival. Method: All patients with HER2-positve EBC, diagnosed between 2006 and 2014 in South-east Sweden were included in the study. The patients were identified using the Swedish national breast cancer register and then cross-referenced with data from the pathology department at each hospital in order to obtain complete coverage in a retrospective clinical follow up. In addition, data were collected from medical records for each patient to verify the actual given treatments and survival data. Results: Preliminary data is available. 611 patients were included with a median follow-up time of 5 years. During the follow-up period the number of patients diagnosed with HER2-positive EBC cancer doubled. 73% of all patients received trastuzumab treatment; however the coverage increased successively from 56% in 2006 to 83% in 2013. ER-positive patients did receive trastuzumab therapy to the same extent as ER-negative patients. Local recurrence-free survival (LRFS), distant recurrence-free survival (DRFS) and breast cancer specific survival (BCSS) at 5 years were 85%, 76%, and 75% for patients not receiving trastuzumab. In the trastuzumab treated group LRFS, DRFS and BCSS was 95%, 85% and 83% respectively. The group not receiving trastuzumab was significantly older, had more frequently node negative disease and was not treated with chemotherapy to the same extent. Conclusion: A significant amount of early HER2-positive breast cancer patients did not receive adjuvant trastuzumab therapy between 2006 and 2014. In this group fewer patients received chemotherapy and despite less nodal involvement LRFS, DRFS and BCSS were poor for these patients. Citation Format: Ellegard S, Asowed M, Engvall K, Hallbeck A-L, Elander N, Stal O. Long term clinical follow up of real world HER2-positive patients since the introduction of trastuzumab [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-13-06.","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77953649","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 P6-20-05: Therapeutic targeting ofBRCA1andTP53mutant breast cancer through mutant p53 reactivation","authors":"Bing Na, Xin Yu, T. Wither, John Gilleran, M. Yao, T. K. Foo, Chunxia Chen, D. Moore, B. Xia, Yong Lin, D. Kimball, S. Ganesan, D. Carpizo","doi":"10.1158/1538-7445.SABCS18-P6-20-05","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P6-20-05","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72853091","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 P1-16-05: Prognosis and survival in metastatic breast cancer – Ten years in review, a population-based analysis","authors":"N. LeVasseur, L. Fiorino, C. Speers, M. Aparicio, C. Lohrisch, S. Chia","doi":"10.1158/1538-7445.SABCS18-P1-16-05","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P1-16-05","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73115071","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 P3-12-10: Utilization patterns and temporal trends of internal mammary nodal irradiation (IMNI) at a tertiary cancer centre","authors":"S. Misra, G. Lee, M. Maganti, C. A. Koch","doi":"10.1158/1538-7445.sabcs18-p3-12-10","DOIUrl":"https://doi.org/10.1158/1538-7445.sabcs18-p3-12-10","url":null,"abstract":"","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73313289","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 P3-09-01: MYC dysregulates mitotic spindle function in triple-negative breast cancer creating a dependency on TPX2","authors":"A. Goga, Julia Rohrberg, Alexandra Corella, Moufida Taileb, S. Kilinc, Marie-Lena Jokisch, Roman Camarda, A. Zhou, S. Balakrishnan, An-Chen Chang, H. Klein-Connolly","doi":"10.1158/1538-7445.SABCS18-P3-09-01","DOIUrl":"https://doi.org/10.1158/1538-7445.SABCS18-P3-09-01","url":null,"abstract":"Tumors that overexpress the MYC oncogene, including most receptor triple-negative breast cancers, frequently demonstrate aneuploidy, numerical chromosome alterations associated with highly aggressive cancers. Aneuploidy is also associated with rapid tumor evolution and poor patient outcome. We identify that MYC overexpression induces reversible defects in microtubule nucleation and mitotic spindle assembly, in TNBCs and other epithelial cells, promoting chromosome segregation defects, micronuclei and chromosomal instability (CIN). High TPX2 expression is permissive for mitotic spindle assembly and chromosome segregation in cells with MYC overexpression; whereas TPX2 depletion blocks mitotic progression, induces cell death and prevents tumor growth. Attenuating MYC expression reverses mitotic defects, even in established breast tumor cell lines, implicating an ongoing role for high MYC in the persistence of CIN in cancers. Our studies implicate the MYC oncogene as a regulator of spindle assembly and identify a new MYC-TPX2 synthetic-lethal interaction in TNBC that could represent a future therapeutic strategy in MYC-overexpressing cancers. Moreover, our studies suggest that blocking MYC activity can attenuate the emergence of CIN and tumor evolution. Citation Format: Goga A, Rohrberg J, Corella A, Taileb M, Kilinc S, Jokisch M-L, Camarda R, Zhou A, Balakrishnan S, Chang AN, Klein-Connolly H. MYC dysregulates mitotic spindle function in triple-negative breast cancer creating a dependency on TPX2 [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P3-09-01.","PeriodicalId":20307,"journal":{"name":"Poster Session Abstracts","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80183757","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}