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Fourati N, Trigui R, Charfeddine S, Dhouib F, Kridis WB, Abid L, Khanfir A, Mnejja W, Daoud J. [Concomitant radiotherapy and trastuzumab: Rational and clinical implications]. Bull Cancer 2021; 108:501-512. [PMID: 33745737 DOI: 10.1016/j.bulcan.2020.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 12/01/2020] [Accepted: 12/18/2020] [Indexed: 11/25/2022]
Abstract
The HER2 receptor (Human Epidermal Growth Receptor 2) is a transmembrane receptor with tyrosine kinase activity that is over-expressed in 25-30 % of breast carcinomas. Its activation is associated with an exaggeration of cell proliferation with an increase in repair capacity resulting in increased radioresistance. On cardiac tissues, HER2 receptor activation plays a cardio-protective role. Trastuzumab, the first anti-HER2 drug used to treat patients with breast cancer overexpressing HER2 receptor , inhibits the cascade of reactions resulting in the proliferation of tumor cells, thus restoring cellular radiosensitivity. However, the combination of Trastuzumab with radiation therapy also removes HER2 receptor cardio-protective role on myocardial cells which increases the risk of cardiotoxicity. Thus, the concomitant association of these two modalities has long been a subject of controversy. Recent advances in radiation therapy technology and early detection of cardiac injury may limit the cardiotoxicity of this combination. Through this review, we developed the biological basis and the benefit-risk of concomitant combination of radiotherapy and Trastuzumab in adjuvant treatment of breast cancers overexpressing HER2 and we discuss the modalities of its optimization.
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Affiliation(s)
- Nejla Fourati
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service de radiothérapie carcinologique, Sfax, Tunisie.
| | - Rim Trigui
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service de radiothérapie carcinologique, Sfax, Tunisie
| | - Selma Charfeddine
- Université de Sfax, CHU d'Hedi-Chaker, faculté de médecine, service de cardiologie, Sfax, Tunisie
| | - Fatma Dhouib
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service de radiothérapie carcinologique, Sfax, Tunisie
| | - Wala Ben Kridis
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service d'oncologie médicale, Sfax, Tunisie
| | - Leila Abid
- Université de Sfax, CHU d'Hedi-Chaker, faculté de médecine, service de cardiologie, Sfax, Tunisie
| | - Afef Khanfir
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service d'oncologie médicale, Sfax, Tunisie
| | - Wafa Mnejja
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service de radiothérapie carcinologique, Sfax, Tunisie
| | - Jamel Daoud
- Université de Sfax, CHU d'Habib-Bourguiba, faculté de médecine, service de radiothérapie carcinologique, Sfax, Tunisie
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Lin Y, Wang B. Dosimetric absorption of intensity-modulated radiotherapy compared with conventional radiotherapy in breast-conserving surgery. Oncol Lett 2014; 9:9-14. [PMID: 25435927 PMCID: PMC4246647 DOI: 10.3892/ol.2014.2704] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 07/01/2014] [Indexed: 01/29/2023] Open
Abstract
The aim of this study was to investigate the dosimetric benefits between intensity-modulated radiotherapy (IMRT) and conventional radiotherapy (CR) among patients receiving breast-conserving surgery. A dosimetric comparison of IMRT and CR was evaluated in 20 patients with early-stage breast cancer using a three-dimensional treatment planning system. The prescribed mammary gland dose was completed in 25 fractions with a total dose of 5,000 cGy. Homogeneity of the planning target volume (PTV), irradiation dose and volume of organs at risk (OARs) were evaluated through a dose-volume histogram. For the homogeneity of PTV, the average volume receiving 95% of the prescribed dose in the IMRT plan was similar to that in the CR plan (97 vs. 96%, respectively). With regard to normal tissue sparing in OARs, the ipsilateral lung V20 in the IMRT and CR plans was 27.8 and 20.8%, respectively. The mean dose and V30 of the heart for five patients were 598.4 versus 348.3 cGy and 10.06 versus 5.3%, respectively. The mean dose sparing the heart or lung was markedly reduced in the IMRT plan compared with the CR plan. The results of the current study demonstrated that whole breast IMRT improves PTV dose distribution and improves normal tissue sparing in OARs.
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Affiliation(s)
- Yang Lin
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Benzhong Wang
- Department of Breast Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
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Zhang F, Wang Y, Xu W, Jiang H, Liu Q, Gao J, Yao B, Hou J, He H. Dosimetric Evaluation of Different Intensity-Modulated Radiotherapy Techniques for Breast Cancer After Conservative Surgery. Technol Cancer Res Treat 2014; 14:515-23. [PMID: 25311257 DOI: 10.1177/1533034614551873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 06/06/2014] [Indexed: 12/25/2022] Open
Abstract
Intensity-modulated radiotherapy (IMRT) potentially leads to a more favorite dose distribution compared to 3-dimensional or conventional tangential radiotherapy (RT) for breast cancer after conservative surgery or mastectomy. The aim of this study was to compare dosimetric parameters of the planning target volume (PTV) and organs at risk (OARs) among helical tomotherapy (HT), inverse-planned IMRT (IP-IMRT), and forward-planned field in field (FP-FIF) IMRT techniques after breast-conserving surgery. Computed tomography scans from 20 patients (12 left sided and 8 right sided) previously treated with T1N0 carcinoma were selected for this dosimetric planning study. We designed HT, IP-IMRT, and FP-FIF plans for each patient. Plans were compared according to dose-volume histogram analysis in terms of PTV homogeneity and conformity indices (HI and CI) as well as OARs dose and volume parameters. Both HI and CI of the PTV showed statistically significant difference among IP-IMRT, FP-FIF, and HT with those of HT were best (P < .05). Compared to FP-FIF, IP-IMRT showed smaller exposed volumes of ipsilateral lung, heart, contralateral lung, and breast, while HT indicated smaller exposed volumes of ipsilateral lung but larger exposed volumes of contralateral lung and breast as well as heart. In addition, HT demonstrated an increase in exposed volume of ipsilateral lung (except for fraction of lung volume receiving >30 Gy and 20 Gy), heart, contralateral lung, and breast compared with IP-IMRT. For breast cancer radiotherapy (RT) after conservative surgery, HT provides better dose homogeneity and conformity of PTV compared to IP-IMRT and FP-FIF techniques, especially for patients with supraclavicular lymph nodes involved. Meanwhile, HT decreases the OAR volumes receiving higher doses with an increase in the volumes receiving low doses, which is known to lead to an increased rate of radiation-induced secondary malignancies. Hence, composite factors including dosimetric advantage, clinical effect, and economic burden should be taken into comprehensive consideration when choosing an RT technique in clinical practice.
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Affiliation(s)
- Fuli Zhang
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Yadi Wang
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Weidong Xu
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Huayong Jiang
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Qingzhi Liu
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Junmao Gao
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Bo Yao
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Jun Hou
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
| | - Heliang He
- Radiation Oncology Department, The Military General Hospital of Beijing PLA, Beijing, P.R. China
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Shah C, Badiyan S, Berry S, Khan AJ, Goyal S, Schulte K, Nanavati A, Lynch M, Vicini FA. Cardiac dose sparing and avoidance techniques in breast cancer radiotherapy. Radiother Oncol 2014; 112:9-16. [PMID: 24813095 DOI: 10.1016/j.radonc.2014.04.009] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 04/06/2014] [Accepted: 04/18/2014] [Indexed: 12/12/2022]
Abstract
Breast cancer radiotherapy represents an essential component in the overall management of both early stage and locally advanced breast cancer. As the number of breast cancer survivors has increased, chronic sequelae of breast cancer radiotherapy become more important. While recently published data suggest a potential for an increase in cardiac events with radiotherapy, these studies do not consider the impact of newer radiotherapy techniques commonly utilized. Therefore, the purpose of this review is to evaluate cardiac dose sparing techniques in breast cancer radiotherapy. Current options for cardiac protection/avoidance include (1) maneuvers that displace the heart from the field such as coordinating the breathing cycle or through prone patient positioning, (2) technological advances such as intensity modulated radiation therapy (IMRT) or proton beam therapy (PBT), and (3) techniques that treat a smaller volume around the lumpectomy cavity such as accelerated partial breast irradiation (APBI), or intraoperative radiotherapy (IORT). While these techniques have shown promise dosimetrically, limited data on late cardiac events exist due to the difficulties of long-term follow up. Future studies are required to validate the efficacy of cardiac dose sparing techniques and may use surrogates for cardiac events such as biomarkers or perfusion imaging.
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Affiliation(s)
- Chirag Shah
- Department of Radiation Oncology, Summa Health System, Akron, United States
| | - Shahed Badiyan
- Department of Radiation Oncology, Siteman Cancer Center, Washington University School of Medicine, St. Louis, United States
| | - Sameer Berry
- Department of Radiation Oncology, Summa Health System, Akron, United States
| | - Atif J Khan
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey & Rutgers Robert Wood Johnson Medical School, New Brunswick, United States
| | - Sharad Goyal
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey & Rutgers Robert Wood Johnson Medical School, New Brunswick, United States
| | - Kevin Schulte
- Department of Radiation Oncology, Summa Health System, Akron, United States
| | - Anish Nanavati
- Department of Oncology, Georgetown University School of Medicine, Washington DC United States
| | - Melanie Lynch
- Department of Radiation Oncology, Summa Health System, Akron, United States
| | - Frank A Vicini
- Michigan Healthcare Professionals/21st Century Oncology, Farmington Hills, United States.
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Tsuchiya K, Kinoshita R, Shimizu S, Nishioka K, Harada K, Nishikawa N, Suzuki R, Shirato H. Dosimetric comparison between intensity-modulated radiotherapy and standard wedged tangential technique for whole-breast radiotherapy in Asian women with relatively small breast volumes. Radiol Phys Technol 2013; 7:67-72. [PMID: 23982269 DOI: 10.1007/s12194-013-0232-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/14/2013] [Accepted: 08/14/2013] [Indexed: 10/26/2022]
Abstract
We sought to investigate whether intensity-modulated radiotherapy (IMRT) has a dosimetric advantage compared to the standard wedged tangential technique (SWT) for whole-breast radiotherapy (WBRT) in Asian women with relatively small breast volume. Computed tomography images of 25 Asian patients with early-stage breast cancer (right 15, left 10) used for WBRT planning were examined. After contouring the target volumes and bilateral lungs and, for left-side treatment, the heart, 4 plans were made for each patient: namely, SWT, tangential-field IMRT (T-IMRT), 3-field IMRT (3F-IMRT), and 4-field IMRT (4F-IMRT). The prescribed dose was 5000 cGy. The median planning target volume (PTV) for WBRT was 552.6 cc (range 288.8-1518.4 cc). Compared to SWT, (1) T-IMRT achieved significant improvement for dose homogeneity in the PTV (p < 0.001) and the dose received by 2% (D2) of the PTV (p < 0.001). T-IMRT also reduced the bilateral lung mean dose (p < 0.001) and the ipsilateral lung volume which received more than 20 Gy (V20) (p = 0.01). (2) 3F-IMRT resulted in a significant increase in the mean dose to the ipsilateral lung (p < 0.001) and to the contralateral lung (p < 0.001). (3) 4F-IMRT also resulted in a significant increase in the mean dose to the ipsilateral lung (p < 0.001) and to the contralateral lung (p < 0.001). Tangential-field IMRT provided an improved dose distribution compared with SWT for WBRT in Asian women with a relatively small breast volume.
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Affiliation(s)
- Kazuhiko Tsuchiya
- Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, North 15 West 7 Kita-ku, Sapporo, 060-8638, Japan
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Fung E, Hendry J. External beam radiotherapy (EBRT) techniques used in breast cancer treatment to reduce cardiac exposure. Radiography (Lond) 2013. [DOI: 10.1016/j.radi.2012.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Menon G, Pudney D, Smith W. Dosimetric evaluation of breast radiotherapy in a dynamic phantom. Phys Med Biol 2011; 56:7405-18. [PMID: 22056856 DOI: 10.1088/0031-9155/56/23/005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This phantom study quantifies changes in delivered dose due to respiratory motion for four breast radiotherapy planning techniques: three intensity-modulated techniques (forward-planned, surface-compensated and hybrid intensity-modulated radiation therapy (IMRT)); using a combination of open fields and inverse planned IMRT) and a 2D conventional technique. The plans were created on CT images of a wax breast phantom with a cork lung insert, and dose distributions were measured using films inserted through slits in the axial and sagittal planes. Films were irradiated according to each plan under a static (modeling breathhold) and three dynamic conditions--isocenter set at mid-respiratory cycle with motion amplitudes of 1 and 2 cm and at end-cycle with 2 cm motion amplitude (modeling end-exhale). Differences between static and moving deliveries were most pronounced for the more complex planning techniques with hot spots of up to 107% appearing in the anterior portion of all three IMRT plans at the largest motion at the end-exhale set-up. The delivered dose to the moving phantom was within 5% of that to the static phantom for all cases, while measurement accuracy was ±3%. The homogeneity index was significantly decreased only for the 2 cm motion end-exhale set-up; however, this same motion increased the equivalent uniform dose because of improved posterior breast coverage. Overall, the study demonstrates that the effect of respiratory motion is negligible for all planning techniques except in occasional instances of large motion.
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Affiliation(s)
- Geetha Menon
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada.
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Rudat V, Alaradi AA, Mohamed A, Ai-Yahya K, Altuwaijri S. Tangential beam IMRT versus tangential beam 3D-CRT of the chest wall in postmastectomy breast cancer patients: a dosimetric comparison. Radiat Oncol 2011; 6:26. [PMID: 21418616 PMCID: PMC3069936 DOI: 10.1186/1748-717x-6-26] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2011] [Accepted: 03/21/2011] [Indexed: 11/10/2022] Open
Abstract
Background This study evaluates the dose distribution of reversed planned tangential beam intensity modulated radiotherapy (IMRT) compared to standard wedged tangential beam three-dimensionally planned conformal radiotherapy (3D-CRT) of the chest wall in unselected postmastectomy breast cancer patients Methods For 20 unselected subsequent postmastectomy breast cancer patients tangential beam IMRT and tangential beam 3D-CRT plans were generated for the radiotherapy of the chest wall. The prescribed dose was 50 Gy in 25 fractions. Dose-volume histograms were evaluated for the PTV and organs at risk. Parameters of the dose distribution were compared using the Wilcoxon matched pairs test. Results Tangential beam IMRT statistically significantly reduced the ipsilateral mean lung dose by an average of 21% (1129 cGy versus 1437 cGy). In all patients treated on the left side, the heart volume encompassed by the 70% isodose line (V70%; 35 Gy) was reduced by an average of 43% (5.7% versus 10.6%), and the mean heart dose by an average of 20% (704 cGy versus 877 cGy). The PTV showed a significantly better conformity index with IMRT; the homogeneity index was not significantly different. Conclusions Tangential beam IMRT significantly reduced the dose-volume of the ipsilateral lung and heart in unselected postmastectomy breast cancer patients.
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Affiliation(s)
- Volker Rudat
- Department of Radiation Oncology, Saad Specialist Hospital, Saudi Arabia.
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