scholarly journals Silencing of XRCC4 increases radiosensitivity of triple-negative breast cancer cells

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
Yuqing Wen ◽  
Gongpeng Dai ◽  
Liping Wang ◽  
Kanda Fu ◽  
Shuguang Zuo
Keyword(s):  
Breast Cancer ◽  
Survival Analysis ◽  
Ionizing Radiation ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Radiation Treatment ◽  
Clinical Sample ◽  
Progression Free Survival ◽  
Stable Cell Line ◽  
Damage Level

Abstract Background: Radiotherapy is an important locoregional treatment, and its effect on triple-negative breast cancer (TNBC) needs to be enhanced. The aim of the present study was to investigate the potential effects of XRCC4 on radiosensitivity of TNBC. Methods: The RNAi technique was implemented to establish the TNBC stable cell line with XRCC4 knockdown. MTT assay was used to detect the effect of XRCC4 knockdown on cell proliferation. Western blot and immunohistochemistry assays were employed to identify protein expression. Colony assay was performed to detect the effect of XRCC4 knockdown on the colony formation ability of TNBC cells with radiation treatment. Comet assay was conducted to evaluate the influence of XRCC4 silencing on DNA repair activity in ionizing radiation. In addition, we performed a survival analysis based on data in TCGA database. Results: XRCC4 knockdown by lentivirus-mediated shRNA had no significant effect on proliferation of TNBC cells. Knockdown of XRCC4 could substantially increase the sensitivity of TNBC cells to ionizing radiation. The DNA damage level was detected to be increased in the XRCC4 knockdown group, indicating there was a significant repair delay in the XRCC4-deleted cells. Clinical sample analysis exhibited that there were various XRCC4 expression in different patients with TNBC. Moreover, survival analysis showed that high expression of XRCC4 was significantly associated with poor progression-free survival after radiotherapy in TNBC patients. Conclusion: Our findings suggest that XRCC4 knockdown sensitizes TNBC cells to ionizing radiation, and could be considered as a novel predictor of radiosensitivity and a promising target for TNBC.

Immediate and long-term results of the first line chemotherapy in patients with metastatic triple negative breast cancer. Final analysis of randomized study

2020 ◽  
pp. 75-80
Author(s):  
S.A. Lyalkin ◽  
◽  
L.A. Syvak ◽  
N.O. Verevkina ◽  
◽  
...  
Keyword(s):  
Breast Cancer ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Randomized Study ◽  
Progression Free Survival ◽  
First Line ◽  
Free Survival ◽  
Group 2 ◽  
Line Chemotherapy ◽  
Group 1

The objective: was to evaluate the efficacy of the first line chemotherapy in patients with metastatic triple negative breast cancer (TNBC). Materials and methods. Open randomized study was performed including 122 patients with metastatic TNBC. The efficacy and safety of the first line chemotherapy of regimens АТ (n=59) – group 1, patients received doxorubicine 60 мг/м2 and paclitaxel 175 мг/м2 and ТР (n=63) – group 2, patients received paclitaxel 175 мг/м2 and carboplatin AUC 5 were evaluated. Results. The median duration of response was 9.5 months (4.5–13.25 months) in patients received AT regimen and 8.5 months (4.7–12.25 months), in TP regimen; no statistically significant differences were observed, р=0.836. The median progression free survival was 7 months (95% CI 5–26 months) in group 1 and 7.5 months (95% CI 6–35 months) in group 2, p=0.85. Both chemotherapy regimens (AT and TP) had mild or moderate toxicity profiles (grade 1 or 2 in most patients). No significant difference in gastrointestinal toxicity was observed. The incidence of grade 3–4 neutropenia was higher in patients of group 2 (TP regimen): 42.8% versus 27% (р<0.05). Conclusions. Both regimens of chemotherapy (AT and TP) are appropriate to use in the first line setting in patients with metastatic TNBC. Key words: metastatic triple negative breast cancer, chemotherapy, progression free survival, chemotherapy toxicity.

scholarly journals Glembatumumab vedotin for patients with metastatic, gpNMB overexpressing, triple-negative breast cancer (“METRIC”): a randomized multicenter study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Linda T. Vahdat ◽  
Peter Schmid ◽  
Andres Forero-Torres ◽  
Kimberly Blackwell ◽  
Melinda L. Telli ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Triple Negative Breast Cancer ◽  
Primary Endpoint ◽  
Triple Negative ◽  
Progression Free Survival ◽  
Antibody Drug Conjugate ◽  
Open Label ◽  
Common Grade ◽  
Open Label Phase ◽  
Grade 3

AbstractThe METRIC study (NCT#0199733) explored a novel antibody–drug conjugate, glembatumumab vedotin (GV), targeting gpNMB that is overexpressed in ~40% of patients with triple-negative breast cancer (TNBC) and associated with poor prognosis. The study was a randomized, open-label, phase 2b study that evaluated progression-free survival (PFS) of GV compared with capecitabine in gpNMB-overexpressing TNBC. Patients who had previously received anthracycline and taxane-based therapy were randomized 2:1 to receive, GV (1.88 mg/kg IV q21 days) or capecitabine (2500 mg/m2 PO daily d1–14 q21 days). The primary endpoint was RECIST 1.1 PFS per independent, blinded central review. In all, 327 patients were randomized to GV (213 treated) or capecitabine (92 treated). Median PFS was 2.9 months for GV vs. 2.8 months for capecitabine. The most common grade ≥3 toxicities for GV were neutropenia, rash, and leukopenia, and for capecitabine were fatigue, diarrhea, and palmar-plantar erythrodysesthesia. The study did not meet the primary endpoint of improved PFS over capecitabine or demonstrate a relative risk/benefit improvement over capecitabine.

A phase Ib study of TQB2450 plus anlotinib in patients with advanced triple-negative breast cancer.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 1074-1074
Author(s):  
Jiayu Wang ◽  
Binghe Xu ◽  
Tao Sun ◽  
Quchang Ouyang ◽  
Yiqun Han ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Triple Negative Breast Cancer ◽  
Dose Escalation ◽  
Triple Negative ◽  
Kinase Inhibitor ◽  
Objective Response ◽  
Progression Free Survival ◽  
Expansion Phase ◽  
Qt Interval Prolongation ◽  
Grade 3

1074 Background: TQB2450 is a humanized monoclonal antibody targeting programmed death-ligand 1 (PD-L1). Anlotinib is an antiangiogenic small molecule, multi-target tyrosine kinase inhibitor that has improved clinical outcomes in various solid tumors. This phase 1b study aims to evaluate the safety and efficacy of TQB2450 plus anlotinib for patients with advanced triple-negative breast cancer (TNBC) after the failure of standard therapy. Methods: This ongoing study included a dose-escalation phase and an expansion phase. Advanced TNBC patients with prior anthracyclines and/or taxanes treatment and failed at least first-line therapy were enrolled. In the dose-escalation phase, eligible patients received anlotinib (8mg, 10mg, and 12mg, qd, days 1-14; 21 days per cycle) plus TQB2450 (1200mg, day 1; 21 days per cycle) following the conventional 3+3 design. If the starting dose of 10mg anlotinib led to ≥2 dose-limiting toxicities (DLTs), 8mg anlotinib would be administered. After the dose-escalating phase, eligible patients were enrolled into the expansion cohort. The primary endpoint was objective response rate (ORR), and the secondary endpoints were overall survival (OS), disease control rate (DCR), progression-free survival (PFS), and safety. Results: Between May 29, 2019, and December 31, 2020, in the dose-escalation phase, three patients receiving 10mg anlotinib plus 1200mg TQB2450 had no DLTs in the first cycle, neither did three patients with 12mg anlotinib plus TQB2450. Next, 28 patients with advanced TNBC received 12 mg anlotinib plus TQB2450 in the expansion phase. Finally, a total of 34 patients were included with median age of 49.5 (32-70) and median prior lines of 2 (1-6). Numbers of patients with prior platinum therapy: 16, prior anthracycline therapy: 32. The ORR was 26.47% (9/34) and DCR was 82.35% (28/34). The median PFS was 8.57 months. Seventeen patients experienced grade 3 treatment-related AEs (TRAEs). Most frequently occurring (>5%) grade 3 TRAEs were QT interval prolongation (17.65%), hypertension (14.71%), diarrhea (8.82%), hand-foot syndrome (HFS) (8.82%), and hypertriglyceridemia (5.88%). Conclusions: TQB2450 plus anlotinib showed an acceptable safety profile with promising activity for previously anthracyclines and/or taxanes-treated advanced TNBC patients. Clinical trial information: NCT03855358 .[Table: see text]

scholarly journals Combined Photothermal and Ionizing Radiation Sensitization of Triple-Negative Breast Cancer Using Triangular Silver Nanoparticles

2021 ◽  
Vol Volume 16 ◽  
pp. 851-865
Author(s):  
James Sears ◽  
Jessica Swanner ◽  
Cale D Fahrenholtz ◽  
Christina Snyder ◽  
Monica Rohde ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Silver Nanoparticles ◽  
Ionizing Radiation ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Radiation Sensitization

Five year retrospective survival analysis of triple negative breast cancer in North-West India

2013 ◽  
Vol 50 (4) ◽  
pp. 330 ◽  
Author(s):  
A Kalwar ◽  
N Sharma ◽  
A Kapoor ◽  
N Kumar ◽  
Satyanarayan ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Survival Analysis ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
North West

scholarly journals Immunotherapy in Triple-Negative Breast Cancer: Present and Future

2019 ◽  
Vol 11 (4) ◽  
pp. 259-271 ◽  
Author(s):  
Isaac Kim ◽  
Katherine Sanchez ◽  
Heather L. McArthur ◽  
David Page
Keyword(s):  
Breast Cancer ◽  
Triple Negative Breast Cancer ◽  
Survival Benefit ◽  
Triple Negative ◽  
Predictive Biomarkers ◽  
Progression Free Survival ◽  
Immune Checkpoint Blockade ◽  
Phase Iii ◽  
Breast Cancers ◽  
Effective Treatment Option

Abstract Purpose of Review Immunotherapy is emerging as an effective treatment option for metastatic triple-negative breast cancer. In this review, we summarize clinical data of immunotherapy in triple-negative breast cancer and comment on future directions in the field. Recent Findings IMpassion130 was a phase III trial that demonstrated progression-free survival benefit, and potentially overall survival benefit, of first-line chemotherapy (nab-paclitaxel) plus anti-programmed death ligand 1 (PD-L1) atezolizumab, among PD-L1-positive metastatic triple-negative breast cancers. Studies are ongoing to evaluate other combination therapies with immune checkpoint blockade in TNBC, and to evaluate efficacy in PD-L1-negative tumors and in later lines of therapy. Summary Immunotherapy is now a standard option in the treatment of triple-negative breast cancer. Ongoing trials may expand the degree of clinical benefit. Further work is ongoing to identify novel predictive biomarkers, which in the future may enable a personalized approach of combination immunotherapy.

Metaplastic progression free survival compared to triple negative breast cancer, a retrospective analysis.

2016 ◽  
Vol 34 (15_suppl) ◽  
pp. e12552-e12552
Author(s):  
Maryam B. Lustberg ◽  
Amanda Luff ◽  
Gregory S. Young ◽  
Rachel M. Layman ◽  
Ewa Mrozek ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Retrospective Analysis ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Progression Free Survival ◽  
Free Survival
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