scholarly journals Single-dose local intraosseous injection of simvastatin suppresses breast cancer with tumor vascular normalization

2020 ◽  
Vol 13 (12) ◽  
pp. 100867
Author(s):  
Wanqiong Yuan ◽  
Bao Hai ◽  
Xiaoqing Ren ◽  
Junxiong Zhu ◽  
Chenggui Zhang ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Single Dose ◽  
Vascular Normalization ◽  
Intraosseous Injection

scholarly journals Changes in peripheral immune cells after intraoperative radiation therapy in low-risk breast cancer

2020 ◽  
Vol 62 (1) ◽  
pp. 110-118
Author(s):  
Isabel Linares-Galiana ◽  
Miguel Angel Berenguer-Frances ◽  
Rut Cañas-Cortés ◽  
Monica Pujol-Canadell ◽  
Silvia Comas-Antón ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Radiation Therapy ◽  
Single Dose ◽  
Cancer Patients ◽  
Antitumor Immunity ◽  
Low Risk ◽  
Intraoperative Radiation Therapy ◽  
Breast Cancer Patients ◽  
Intraoperative Radiation ◽  
Risk Breast Cancer

Abstract A detailed understanding of the interactions and the best dose-fractionation scheme of radiation to maximize antitumor immunity have not been fully established. In this study, the effect on the host immune system of a single dose of 20 Gy through intraoperative radiation therapy (IORT) on the surgical bed in low-risk breast cancer patients undergoing conserving breast cancer has been assessed. Peripheral blood samples from 13 patients were collected preoperatively and at 48 h and 3 and 10 weeks after the administration of radiation. We performed a flow cytometry analysis for lymphocyte subpopulations, natural killer cells (NK), regulatory T cells (Treg) and myeloid-derived suppressor cells (MDSCs). We observed that the subpopulation of NK CD56+high CD16+ increased significantly at 3 weeks after IORT (0.30–0.42%, P < 0.001), while no changes were found in immunosuppressive profile, CD4+CD25+Foxp3+Helios+ Treg cells, granulocytic MDSCs (G-MDSCs) and monocytic MDSCs (Mo-MDSCs). A single dose of IORT may be an effective approach to improve antitumor immunity based on the increase in NK cells and the non-stimulation of immunosuppressive cells involved in immune escape. These findings support future combinations of IORT with immunotherapy, if they are confirmed in a large cohort of breast cancer patients.

scholarly journals Comparing the efficacy and side-effects of PDLASTA® (Pegfilgrastim) with PDGRASTIM® (Filgrastim) in breast cancer patients: a non-inferiority randomized clinical trial

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Safa Najafi ◽  
Maryam Ansari ◽  
Vahid Kaveh ◽  
Shahpar Haghighat
Keyword(s):  
Breast Cancer ◽  
Clinical Trial ◽  
Single Dose ◽  
Side Effects ◽  
Randomized Clinical Trial ◽  
Cancer Patients ◽  
Injection Site Reaction ◽  
Study Groups ◽  
Breast Cancer Patients ◽  
Significant Difference

Abstract Background The objective of this study was to compare the efficacy and side effects of a single dose (Pegfilgrastim or PDL) or repeated six daily injections (Filgrastim or PDG) during chemotherapy courses in breast cancer patients in a non-inferiority clinical trial. Methods In this randomized clinical trial, 80 patients were recruited and allocated randomly to two equal arms. In one group, a single subcutaneous dose of PDL was injected the day after receiving the chemotherapy regimen in each cycle. The second arm received a subcutaneous injection of PDG for six consecutive days in each cycle of treatment. The side effects of GCF treatment and its effect on blood parameters were compared in each cycle and during eight cycles of chemotherapy. Results Hematologic parameters showed no significant differences in any of the treatment courses between the two study groups. The comparison of WBC (p = 0.527), Hgb (p = 0.075), Platelet (p = 0.819), Neutrophil (p = 0.575), Lymphocyte (p = 705) and ANC (p = 0.675) changes during the eight courses of treatment also revealed no statistically significant difference between the two study groups. Side effects including headache, injection site reaction and muscle pain had a lower frequency in patients receiving PDL drugs. Conclusion It seems that PDL is non-inferior in efficacy and also less toxic than PDG. Since PDL can be administered in a single dose and is also less costly, it can be regarded as a cost-effective drug for the treatment of chemotherapy-induced neutropenia. Trial registration IRCT20190504043465N1, May 2019.

scholarly journals PO-0740: MR-guided single dose pre-operative radiotherapy in low-risk breast cancer patients: first results

2018 ◽  
Vol 127 ◽  
pp. S379-S380
Author(s):  
J. Vasmel ◽  
R. Charaghvandi ◽  
A. Houw eling ◽  
M. Philippens ◽  
W. Veldhuis ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Single Dose ◽  
Cancer Patients ◽  
Low Risk ◽  
Breast Cancer Patients ◽  
First Results ◽  
Risk Breast Cancer

scholarly journals The antitumor efficiency of combined electrochemotherapy and single dose irradiation on a breast cancer tumor model

2012 ◽  
Vol 46 (3) ◽  
Author(s):  
Elham Raeisi ◽  
Seyed Aghamiri ◽  
Azin Bandi ◽  
Negar Rahmatpour ◽  
Seyed Firoozabadi ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Single Dose ◽  
Tumor Model ◽  
Dose Irradiation ◽  
Cancer Tumor

scholarly journals Immuno-priming durvalumab with bevacizumab in HER2-negative advanced breast cancer: a pilot clinical trial

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Miguel Quintela-Fandino ◽  
Esther Holgado ◽  
Luis Manso ◽  
Serafin Morales ◽  
Begoña Bermejo ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Clinical Benefit ◽  
Mononuclear Cells ◽  
Checkpoint Inhibitors ◽  
Single Agent ◽  
Vascular Normalization ◽  
Preclinical Research ◽  
Expression Studies ◽  
Gene Expression Studies

Abstract Background Preclinical research suggests that the efficacy of immune checkpoint inhibitors in breast cancer can be enhanced by combining them with antiangiogenics, particularly in a sequential fashion. We sought to explore the efficacy and biomarkers of combining the anti-PD-L1 durvalumab plus the antiangiogenic bevacizumab after bevacizumab monotherapy for advanced HER2-negative breast cancer. Methods Patients had advanced HER2-negative disease that progressed while receiving single-agent bevacizumab maintenance as a part of a previous chemotherapy plus bevacizumab regimen. Treatment consisted of bi-weekly durvalumab plus bevacizumab (10 mg/kg each i.v.). Peripheral-blood mononuclear cells (PBMCs) were obtained before the first durvalumab dose and every 4 weeks and immunophenotyped by flow-cytometry. A fresh pre-durvalumab tumor biopsy was obtained; gene-expression studies and immunohistochemical staining to assess vascular normalization and characterize the immune infiltrate were conducted. Patients were classified as “non-progressors” if they had clinical benefit (SD/PR/CR) at 4 months. The co-primary endpoints were the changes in the percentage T cell subpopulations in PBMCs in progressors versus non-progressors, and PFS/OS time. Results Twenty-six patients were accrued. Median PFS and OS were 3.5 and 11 months; a trend for a longer OS was detected for the hormone-positive subset (19.8 versus 7.4 months in triple-negatives; P = 0.11). Clinical benefit rate at 2 and 4 months was 60% and 44%, respectively, without significant differences between hormone-positive and triple-negative (P = 0.73). Non-progressors’ tumors displayed vascular normalization features as a result of previous bevacizumab, compared with generally abnormal patterns observed in progressors. Non-progressors also showed increased T-effector and T-memory signatures and decreased TREG signatures in gene expression studies in baseline—post-bevacizumab—tumors compared with progressors. Notably, analysis of PBMC populations before durvalumab treatment was concordant with the findings in tumor samples and showed a decreased percentage of circulating TREGs in non-progressors. Conclusions This study reporting on sequential bevacizumab+durvalumab in breast cancer showed encouraging activity in a heavily pre-treated cohort. The correlative studies agree with the preclinical rationale supporting an immunopriming effect exerted by antiangiogenic treatment, probably by reducing TREGs cells both systemically and in tumor tissue. The magnitude of this benefit should be addressed in a randomized setting. Trial registration (www.clinicaltrials.gov): NCT02802098. Registered on June 16, 2020.

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