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Helwani AM, Al Suleimani YM, Al Baimani K, Abdelrahman AM. Relative dose intensity of taxane-based chemotherapy in breast cancer patients in a tertiary hospital. J Oncol Pharm Pract 2023:10781552231214467. [PMID: 37968875 DOI: 10.1177/10781552231214467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
INTRODUCTION Breast cancer (BC) is the most diagnosed tumor among women worldwide. The aim of this study was to investigate the incidence and causes of low relative dose intensity (RDI) < 85% for taxane-based chemotherapy regimens used in the treatment of BC in Sultan Qaboos University Hospital (SQUH). METHODS This was a retrospective study that included 303 BC patients, treated with taxane-based chemotherapy protocols at SQUH. RDI was calculated for each chemotherapy regimen and causes and predictors of low RDI < 85% were identified. Prophylactic and therapeutic supportive measures for certain toxicities were studied. RESULTS 50.8% of the patients had neoadjuvant chemotherapy, 38% had adjuvant chemotherapy, and 11.2% of patients were given palliative treatment. AC-T and AC-THP were the most used regimens (40.3% and 17.2%). Mean RDI of used taxane-based chemotherapy regimens was 93.4%. Dose delays, dose reductions, and treatment discontinuation occurred in 36.6%, 14.8%, and 11.5%, respectively. Thirty-eight patients (12.5%) had low RDI < 85% which was reduced to 9.9% after the use of an alternative taxane. Age and chemotherapy intent were significant risk factors. 83.8% received primary granulocyte colony stimulating factor. CONCLUSION An optimal RDI greater than 85% was achieved in most cases. Furthermore, prophylactic and therapeutic supportive measures were widely used.
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Affiliation(s)
- Amira M Helwani
- Department of Pharmacology & Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman
| | - Yousuf M Al Suleimani
- Department of Pharmacology & Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman
| | - Khalid Al Baimani
- Department of Medicine, Sultan Qaboos Comprehensive Cancer Center, Muscat, Sultanate of Oman
| | - Aly M Abdelrahman
- Department of Pharmacology & Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman
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El-bakoury E, Abd El Maksoud WM, Sultan MH, Elwany YN, Bawahab MA, Ahmed YS, Mehanna AA. Ultrasound-guided percutaneous insertion of small vascular surgical clips versus dedicated breast mammoclips as markers for breast cancer prior to neo-adjuvant therapy: a prospective randomized controlled trial. Egypt J Radiol Nucl Med 2022; 53:262. [DOI: 10.1186/s43055-022-00922-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/30/2022] [Indexed: 09/02/2023] Open
Abstract
Abstract
Aim
To investigate the feasibility of applying small vascular surgical clips as tissue markers for breast cancer in patients scheduled for neoadjuvant chemotherapy (NAC) in comparison with the dedicated breast clips with assessment of their different complications.
Patients and methods
This prospective randomized controlled trial included 160 female patients with breast cancer whose neoadjuvant chemotherapy was required for their management. Patients were randomly allocated into 2 groups; group I for patients who were subjected to the insertion of the small vascular surgical clips, and Group II for patients who were subjected to the insertion of the dedicated breast clips (UltraClips®). Assessment of the feasibility of the application of the vascular surgical clips and detection of the complications of the vascular surgical clips compared to the UltraClip® commercial clips were the endpoints of this study.
Results
Vascular surgical clips application had significantly longer duration than the duration of application of the UltraClips® (9.10 ± 2.67 min, and 5.44 ± 1.09 min respectively, P < 0.001). The application of vascular surgical clips was feasible in all patients. There were more incidences of non-deployment (6 patients) and mal-deployment (4 patients) in group I, compared to one patient and 2 patients in group II, respectively. All patients of non-deployment and mal-deployment in both groups had reapplication of other clips successfully. There were no significant differences between the two groups regarding incidence of complications.
Conclusions
The spinal needle/surgical vascular clip technique seems to be a cheap and effective alternative to the dedicated commercial mammoclips when required, with convenient results and minimal complications.
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Gouveia MC, Amorim de Araújo Lima Santos C, Impieri Souza A. Study protocol: Randomized, open-label, non-inferiority clinical trial for evaluating the clinical and pathological response rates to neoadjuvant hormone therapy and chemotherapy in patients with luminal-subtype breast tumors. Contemp Clin Trials Commun 2022; 30:101013. [PMID: 36262803 PMCID: PMC9574413 DOI: 10.1016/j.conctc.2022.101013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/19/2022] [Accepted: 10/01/2022] [Indexed: 11/04/2022] Open
Abstract
Background Despite neoadjuvant hormone therapy (NHT) is being underused, it is an effective treatment for luminal tumors at a lower cost and with fewer side effects compared to those associated with neoadjuvant chemotherapy (NCT). The lack of robust comparative data between NHT and NCT is a factor that limits its use in clinical practice. Methods This study will be a randomized, open-label, non-inferiority clinical trial. Patients diagnosed with HER2-negative luminal-subtype breast cancer will be identified at the time of diagnosis. Menopausal patients randomized for NHT should receive anastrozole for at least six months. Premenopausal women should receive anastrozole associated with subcutaneous goserelin acetate every 12 weeks for at least six months. Patients randomized for NCT will receive a standard institutional regimen based on anthracyclines and taxanes. Sample size was calculated considering the CPS + EG as a method for evaluating response and prognosis, where a score <3 was defined as good. The non-inferiority margin for NHT was set at 15%. The study considered a power of 80%, a significance level of 5%, and an outcome proportion in each group of 69%, resulting in 118 patients in each group. We estimated at 10% of losses, resulting in a sample of 130 patients in each group. Conclusion The non-inferiority of NHT in relation to NCT will provide further evidence that replacing NCT with NHT is safe and effective in eligible patients, which is particularly relevant for populations with limited access to health services and for institutions with few available resources.
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Affiliation(s)
- Maria Carolina Gouveia
- Corresponding author.. Research department, Rua do Coelhos, 300, Boa Vista, Recife, PE, 50070-550, Brazil.
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Gandhi S, Brackstone M, Hong NJL, Grenier D, Donovan E, Lu FI, Skarpathiotakis M, Lee J, Boileau JF, Perera F, Simmons C, Joy AA, Tran WT, Tyono I, Van Massop A, Khalfan S. A Canadian national guideline on the neoadjuvant treatment of invasive breast cancer, including patient assessment, systemic therapy, and local management principles. Breast Cancer Res Treat 2022; 193:1-20. [PMID: 35224713 PMCID: PMC8993711 DOI: 10.1007/s10549-022-06522-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 01/16/2022] [Indexed: 12/11/2022]
Abstract
Purpose The neoadjuvant treatment of breast cancer (NABC) is a rapidly changing area that benefits from guidelines integrating evidence with expert consensus to help direct practice. This can optimize patient outcomes by ensuring the appropriate use of evolving neoadjuvant principles. Methods An expert panel formulated evidence-based practice recommendations spanning the entire neoadjuvant breast cancer treatment journey. These were sent for practice-based consensus across Canada using the modified Delphi methodology, through a secure online survey. Final recommendations were graded using the GRADE criteria for guidelines. The evidence was reviewed over the course of guideline development to ensure recommendations remained aligned with current relevant data. Results Response rate to the online survey was almost 30%; representation was achieved from various medical specialties from both community and academic centres in various Canadian provinces. Two rounds of consensus were required to achieve 80% or higher consensus on 59 final statements. Five additional statements were added to reflect updated evidence but not sent for consensus. Conclusions Key highlights of this comprehensive Canadian guideline on NABC include the use of neoadjuvant therapy for early stage triple negative and HER2 positive breast cancer, with subsequent adjuvant treatments for patients with residual disease. The use of molecular signatures, other targeted adjuvant therapies, and optimal response-based local regional management remain actively evolving areas. Many statements had evolving or limited data but still achieved high consensus, demonstrating the utility of such a guideline in helping to unify practice while further evidence evolves in this important area of breast cancer management.
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5
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Cavalcanti IDL, Soares JCS, Medeiros SMDFRDS, Cavalcanti IMF, Lira Nogueira MCDB. Can antioxidant vitamins avoid the cardiotoxicity of doxorubicin in treating breast cancer? PharmaNutrition 2021. [DOI: 10.1016/j.phanu.2021.100259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Graeser M, Schrading S, Gluz O, Strobel K, Würstlein R, Kümmel S, Schumacher C, Grischke E, Forstbauer H, Braun M, Christgen M, Adams J, Nitzsche H, Just M, Fischer HH, Aktas B, Potenberg J, von Schumann R, Kolberg‐Liedtke C, Harbeck N, Kuhl CK, Nitz U. Early response by MR imaging and ultrasound as predictor of pathologic complete response to 12-week neoadjuvant therapy for different early breast cancer subtypes: Combined analysis from the WSG ADAPT subtrials. Int J Cancer 2021; 148:2614-2627. [PMID: 33533487 PMCID: PMC8048810 DOI: 10.1002/ijc.33495] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/31/2022]
Abstract
We evaluated the role of early response after 3 weeks of neoadjuvant treatment (NAT) assessed by ultrasound (US), magnetic resonance imaging (MRI) and Ki-67 dynamics for prediction of pathologic complete response (pCR) in different early breast cancer subtypes. Patients with HR+/HER2+, HR-/HER2- and HR-/HER2+ tumors enrolled into three neoadjuvant WSG ADAPT subtrials underwent US, MRI and Ki-67 assessment at diagnosis and after 3 weeks of NAT. Early response was defined as complete or partial response (US, MRI) and ≥30% proliferation decrease or <500 invasive tumor cells (Ki-67). Predictive values and area under the receiver operating characteristic (AUC) curves for prediction of pCR (ypT0/is ypN0) after 12-week NAT were calculated. Two hundred twenty-six had MRI and 401 US; 107 underwent both MRI and US. All three methods yielded a similar AUC in HR+/HER2+ (0.66-0.67) and HR-/HER2- tumors (0.53-0.63), while MRI and Ki-67 performed better than US in HR-/HER2+ tumors (0.83 and 0.79 vs 0.56). Adding MRI+/-Ki-67 increased AUC of US in HR-/HER2+ tumors to 0.64 to 0.75. MRI and Ki-67 demonstrated highest sensitivity in HR-/HER2- (0.8-1) and HR-/HER2+ tumors (1, both). Negative predictive value was similar for all methods in HR+/HER2+ (0.71-0.74) and HR-/HER2- tumors (0.85-1), while it was higher for MRI and Ki-67 compared to US in HR-/HER2+ subtype (1 vs 0.5). Early response assessed by US, MRI and Ki-67 is a strong predictor for pCR after 12-week NAT. Strength of pCR prediction varies according to tumor subtype. Adding MRI+/-Ki-67 to US did not improve pCR prediction in majority of our patients.
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Affiliation(s)
- Monika Graeser
- West German Study GroupMoenchengladbachGermany
- Ev. Hospital Bethesda, Breast Center NiederrheinMoenchengladbachGermany
- Department of GynecologyUniversity Medical Center HamburgHamburgGermany
| | - Simone Schrading
- Department of Diagnostic and Interventional RadiologyHospital of the University of Aachen, RWTHAachenGermany
| | - Oleg Gluz
- West German Study GroupMoenchengladbachGermany
- Ev. Hospital Bethesda, Breast Center NiederrheinMoenchengladbachGermany
- University Hospital CologneCologneGermany
| | - Kevin Strobel
- Department of Diagnostic and Interventional RadiologyHospital of the University of Aachen, RWTHAachenGermany
| | - Rachel Würstlein
- West German Study GroupMoenchengladbachGermany
- Breast Center, Department of Gynecology and Obstetrics and CCCLMULMU University HospitalMunichGermany
| | - Sherko Kümmel
- West German Study GroupMoenchengladbachGermany
- Breast UnitKliniken Essen‐MitteEssenGermany
- University Hospital Charité, Humboldt University BerlinBerlinGermany
| | | | | | | | - Michael Braun
- Department of GynecologyBreast Center, Red Cross Hospital MunichMunichGermany
| | | | | | - Henrik Nitzsche
- Ev. Hospital Bethesda, Breast Center NiederrheinMoenchengladbachGermany
| | | | | | - Bahriye Aktas
- Department of Gynecology and ObstetricsUniversity Clinics EssenEssenGermany
- Department of GynecologyUniversity Hospital LeipzigLeipzigGermany
| | | | | | - Cornelia Kolberg‐Liedtke
- University Hospital Charité, Humboldt University BerlinBerlinGermany
- Department of Gynecology and ObstetricsUniversity Clinics EssenEssenGermany
| | - Nadia Harbeck
- West German Study GroupMoenchengladbachGermany
- Breast Center, Department of Gynecology and Obstetrics and CCCLMULMU University HospitalMunichGermany
| | - Christiane K. Kuhl
- Department of Diagnostic and Interventional RadiologyHospital of the University of Aachen, RWTHAachenGermany
| | - Ulrike Nitz
- West German Study GroupMoenchengladbachGermany
- Ev. Hospital Bethesda, Breast Center NiederrheinMoenchengladbachGermany
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Tse T, Sehdev S, Seely J, Gravel DH, Clemons M, Cordeiro E, Arnaout A. Neoadjuvant Chemotherapy in Breast Cancer: Review of the Evidence and Conditions That Facilitated Its Use during the Global Pandemic. ACTA ACUST UNITED AC 2021; 28:1338-1347. [PMID: 33805031 PMCID: PMC8025808 DOI: 10.3390/curroncol28020127] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 03/09/2021] [Accepted: 03/17/2021] [Indexed: 12/29/2022]
Abstract
Practice and behaviour change in healthcare is complex, and requires a set of critical steps that would be needed to implement and sustain the change. Neoadjuvant chemotherapy for breast cancer is traditionally used for locally advanced disease and is primarily advantageous for surgical downstaging purposes. However, it does also offer patients with certain biologic subtypes such as the triple negative or Her2 positive breast cancers the opportunity to improve survival, even in early stage disease. During the height of the pandemic, an opportunity and motivation for the increased use of neoadjuvant therapy in breast cancer was identified. This paper describes the conditions that have supported this practice change at the provider and institutional levels. We also include our own institutional algorithm based on tumor biology and extent of disease that have guided our decisions on breast cancer management during the pandemic. Our processes can be adapted by other institutions and breast oncology practices in accordance with local conditions and resources, during and beyond the pandemic.
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Affiliation(s)
- Tabitha Tse
- Department of Surgery, Grand River Hospital, Kitchener Waterloo, ON N2G 1G3, Canada;
| | - Sandeep Sehdev
- Division of Medical Oncology, Department of Medicine, University of Ottawa, Ottawa, ON K1H 8L6, Canada; (S.S.); (M.C.)
| | - Jean Seely
- Division of Breast Imaging, Department of Diagnostic Imaging, University of Ottawa, Ottawa, ON K1H 8L6, Canada;
| | - Denis H. Gravel
- Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, ON K1H 8L6, Canada;
| | - Mark Clemons
- Division of Medical Oncology, Department of Medicine, University of Ottawa, Ottawa, ON K1H 8L6, Canada; (S.S.); (M.C.)
| | - Erin Cordeiro
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, ON K1H 8L6, Canada;
| | - Angel Arnaout
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, ON K1H 8L6, Canada;
- Correspondence:
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Graeser M, Schrading S, Gluz O, Strobel K, Herzog C, Umutlu L, Frydrychowicz A, Rjosk-Dendorfer D, Würstlein R, Culemann R, Eulenburg C, Adams J, Nitzsche H, Prange A, Kümmel S, Grischke EM, Forstbauer H, Braun M, Potenberg J, von Schumann R, Aktas B, Kolberg-Liedtke C, Harbeck N, Kuhl CK, Nitz U. Magnetic resonance imaging and ultrasound for prediction of residual tumor size in early breast cancer within the ADAPT subtrials. Breast Cancer Res 2021; 23:36. [PMID: 33736679 PMCID: PMC7977310 DOI: 10.1186/s13058-021-01413-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 02/24/2021] [Indexed: 11/17/2022] Open
Abstract
Background Prediction of histological tumor size by post-neoadjuvant therapy (NAT) ultrasound and magnetic resonance imaging (MRI) was evaluated in different breast cancer subtypes. Methods Imaging was performed after 12-week NAT in patients enrolled into three neoadjuvant WSG ADAPT subtrials. Imaging performance was analyzed for prediction of residual tumor measuring ≤10 mm and summarized using positive (PPV) and negative (NPV) predictive values. Results A total of 248 and 588 patients had MRI and ultrasound, respectively. Tumor size was over- or underestimated by < 10 mm in 4.4% and 21.8% of patients by MRI and in 10.2% and 15.8% by ultrasound. Overall, NPV (proportion of correctly predicted tumor size ≤10 mm) of MRI and ultrasound was 0.92 and 0.83; PPV (correctly predicted tumor size > 10 mm) was 0.52 and 0.61. MRI demonstrated a higher NPV and lower PPV than ultrasound in hormone receptor (HR)-positive/human epidermal growth factor receptor 2 (HER2)-positive and in HR−/HER2+ tumors. Both methods had a comparable NPV and PPV in HR−/HER2− tumors. Conclusions In HR+/HER2+ and HR−/HER2+ breast cancer, MRI is less likely than ultrasound to underestimate while ultrasound is associated with a lower risk to overestimate tumor size. These findings may help to select the most optimal imaging approach for planning surgery after NAT. Trial registration Clinicaltrials.gov, NCT01815242 (registered on March 21, 2013), NCT01817452 (registered on March 25, 2013), and NCT01779206 (registered on January 30, 2013). Supplementary Information The online version contains supplementary material available at 10.1186/s13058-021-01413-y.
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Affiliation(s)
- Monika Graeser
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany. .,Ev. Hospital Bethesda, Breast Center Niederrhein, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany. .,Department of Gynecology, University Medical Center Hamburg, Martinistrasse 52, 20251, Hamburg, Germany.
| | - Simone Schrading
- Department of Diagnostic and Interventional Radiology, Hospital of the University of Aachen, RWTH, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Oleg Gluz
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany.,University Hospital Cologne, Kerpener Strasse 62, 50937, Cologne, Germany
| | - Kevin Strobel
- Department of Diagnostic and Interventional Radiology, Hospital of the University of Aachen, RWTH, Pauwelsstrasse 30, 52074, Aachen, Germany
| | | | - Lale Umutlu
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Alex Frydrychowicz
- Department of Radiology and Nuclear Medicine, Schleswig-Holstein University Hospital, Campus Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Dorothea Rjosk-Dendorfer
- Department of Radiology, University Hospital, LMU Munich, Marchioninistrasse. 15, 81377, Munich, Germany
| | - Rachel Würstlein
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany.,Department of Gynecology and Obstetrics, Breast Center, University of Munich (LMU) and CCCLMU, Marchioninistrasse 15, 81377, Munich, Germany
| | - Ralph Culemann
- Medizinisches Versorgungszentrum Radiologie Rhein-Sieg, GFO Kliniken Troisdorf, Hospitalstrasse 45, 53840, Troisdorf, Germany
| | - Christine Eulenburg
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany
| | - Jascha Adams
- Alcedis GmbH, Winchesterstrasse 3, 35394, Giessen, Germany
| | - Henrik Nitzsche
- Ev. Hospital Bethesda, Breast Center Niederrhein, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany
| | - Anna Prange
- Department of Radiology, Clinics Essen-Mitte, Breast Centre, Henricistrasse 92, 45136, Essen, Germany
| | - Sherko Kümmel
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany.,Clinics Essen-Mitte, Breast Centre, Henricistrasse 92, 45136, Essen, Germany.,University Hospital Charité, Women's Clinic, Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Eva-Maria Grischke
- University Clinic Tuebingen, Women's Clinic, Calwerstrasse 7, 72076, Tuebingen, Germany
| | - Helmut Forstbauer
- Practice Network Troisdorf, Schlossstrasse 18, 53840, Troisdorf, Germany
| | - Michael Braun
- Red Cross Women's Hospital, Nymphenburger Strasse 163, 80634, Munich, Germany
| | - Jochem Potenberg
- Ev. Waldkrankenhaus Berlin, Stadtrandstrasse 555, 13589, Berlin, Germany
| | - Raquel von Schumann
- Ev. Hospital Bethesda, Breast Center Niederrhein, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany
| | - Bahriye Aktas
- Department of Gynecology and Obstetrics, University Hospital Essen, Hufelandstrasse 55, 45147, Essen, Germany.,Department of Gynecology, University Hospital Leipzig, Liebeigstrasse 20A, 04103, Leipzig, Germany
| | - Cornelia Kolberg-Liedtke
- University Hospital Charité, Women's Clinic, Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Department of Gynecology and Obstetrics, University Hospital Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Nadia Harbeck
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany.,Department of Gynecology and Obstetrics, Breast Center, University of Munich (LMU) and CCCLMU, Marchioninistrasse 15, 81377, Munich, Germany
| | - Christiane K Kuhl
- Department of Diagnostic and Interventional Radiology, Hospital of the University of Aachen, RWTH, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Ulrike Nitz
- West German Study Group, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Ludwig-Weber-Strasse 15, 41061, Moenchengladbach, Germany
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Hong JH, Goo JM, Moon HG, Chang JM, Lee JH, Park CM. Usefulness of staging chest-CT in patients with operable breast cancer. PLoS One 2021; 16:e0246563. [PMID: 33571270 PMCID: PMC7877605 DOI: 10.1371/journal.pone.0246563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 01/21/2021] [Indexed: 12/09/2022] Open
Abstract
Objective The aim of this study was to investigate the usefulness of staging chest-CT in terms of diagnostic yield and false-referral rate in patients with operable breast cancer. Materials and methods This study was approved by the institutional review border. In this retrospective study, we reviewed patients who underwent staging chest-CT between January 2014 and June 2016. Reference standard was defined as a combination of pathology and radiologic tumor changes in accordance with primary tumor or metastatic lesions and stability during the 12-month follow-up period. We calculated diagnostic yield and false-referral rates stratified by pathologic stage. The important ancillary findings of staging chest-CT were also recorded. Results A total of 1,342 patients were included in this study. Of these, four patients (0.3%; 4/1342) had true pulmonary metastasis. Diagnostic yields of stage I, II, III disease were 0.0% (0/521), 0.3% (2/693), and 1.6% (2/128), respectively. The overall false-referral rate was 4.6% (62/1342); false-referral rates of stage I, II, and III disease were 5.0% (26/521), 3.8% (26/693), and 7.8% (10/128), respectively. No occult thoracic metastasis occurred within 12 months of staging chest-CT. Nineteen patients showed significant ancillary findings besides lung metastasis, including primary lung cancer (n = 9). The overall diagnostic yield of ancillary findings was 1.7% (23 of 1342). Conclusions The incidence of pulmonary metastasis was near zero for pathologic stages I/II and slightly higher (although still low; 1.6%). for stage III. Considering its low diagnostic yield and substantial false-referral rates, staging chest-CT might not be useful in patients with operable breast cancer.
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Affiliation(s)
- Jung Hee Hong
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jin Mo Goo
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Hyeong-Gon Moon
- Department of Surgery and Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jung Min Chang
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jong Hyuk Lee
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Chang Min Park
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
- * E-mail:
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Jarrett AM, Hormuth DA, Wu C, Kazerouni AS, Ekrut DA, Virostko J, Sorace AG, DiCarlo JC, Kowalski J, Patt D, Goodgame B, Avery S, Yankeelov TE. Evaluating patient-specific neoadjuvant regimens for breast cancer via a mathematical model constrained by quantitative magnetic resonance imaging data. Neoplasia 2020; 22:820-830. [PMID: 33197744 PMCID: PMC7677708 DOI: 10.1016/j.neo.2020.10.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022]
Abstract
The ability to accurately predict response and then rigorously optimize a therapeutic regimen on a patient-specific basis, would transform oncology. Toward this end, we have developed an experimental-mathematical framework that integrates quantitative magnetic resonance imaging (MRI) data into a biophysical model to predict patient-specific treatment response of locally advanced breast cancer to neoadjuvant therapy. Diffusion-weighted and dynamic contrast-enhanced MRI data is collected prior to therapy, after 1 cycle of therapy, and at the completion of the first therapeutic regimen. The model is initialized and calibrated with the first 2 patient-specific MRI data sets to predict response at the third, which is then compared to patient outcomes (N = 18). The model's predictions for total cellularity, total volume, and the longest axis at the completion of the regimen are significant within expected measurement precision (P< 0.05) and strongly correlated with measured response (P < 0.01). Further, we use the model to investigate, in silico, a range of (practical) alternative treatment plans to achieve the greatest possible tumor control for each individual in a subgroup of patients (N = 13). The model identifies alternative dosing strategies predicted to achieve greater tumor control compared to the standard of care for 12 of 13 patients (P < 0.01). In summary, a predictive, mechanism-based mathematical model has demonstrated the ability to identify alternative treatment regimens that are forecasted to outperform the therapeutic regimens the patients clinically. This has important implications for clinical trial design with the opportunity to alter oncology care in the future.
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Affiliation(s)
- Angela M Jarrett
- Oden Institute for Computational Engineering and Sciences, Austin, TX, USA; Livestrong Cancer Institutes, Austin, TX, USA
| | - David A Hormuth
- Oden Institute for Computational Engineering and Sciences, Austin, TX, USA; Livestrong Cancer Institutes, Austin, TX, USA
| | - Chengyue Wu
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Anum S Kazerouni
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - David A Ekrut
- Oden Institute for Computational Engineering and Sciences, Austin, TX, USA
| | - John Virostko
- Livestrong Cancer Institutes, Austin, TX, USA; Department of Diagnostic Medicine, The University of Texas at Austin, Austin, TX, USA; Department of Oncology, The University of Texas at Austin, Austin, TX, USA
| | - Anna G Sorace
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL, USA; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Julie C DiCarlo
- Oden Institute for Computational Engineering and Sciences, Austin, TX, USA
| | - Jeanne Kowalski
- Livestrong Cancer Institutes, Austin, TX, USA; Department of Oncology, The University of Texas at Austin, Austin, TX, USA
| | | | - Boone Goodgame
- Department of Oncology, The University of Texas at Austin, Austin, TX, USA; Department of Internal Medicine, The University of Texas at Austin, Austin, TX, USA; Seton Hospital, Austin, TX, USA
| | - Sarah Avery
- Austin Radiological Association, Austin, TX, USA
| | - Thomas E Yankeelov
- Oden Institute for Computational Engineering and Sciences, Austin, TX, USA; Livestrong Cancer Institutes, Austin, TX, USA; Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA; Department of Diagnostic Medicine, The University of Texas at Austin, Austin, TX, USA; Department of Oncology, The University of Texas at Austin, Austin, TX, USA; Department of Imaging Physics, MD Anderson Cancer Center, Houston, TX, USA.
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11
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Mathioudaki A, Ljungström V, Melin M, Arendt ML, Nordin J, Karlsson Å, Murén E, Saksena P, Meadows JRS, Marinescu VD, Sjöblom T, Lindblad-Toh K. Targeted sequencing reveals the somatic mutation landscape in a Swedish breast cancer cohort. Sci Rep 2020; 10:19304. [PMID: 33168853 DOI: 10.1038/s41598-020-74580-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023] Open
Abstract
Breast cancer (BC) is a genetically heterogeneous disease with high prevalence in Northern Europe. However, there has been no detailed investigation into the Scandinavian somatic landscape. Here, in a homogeneous Swedish cohort, we describe the somatic events underlying BC, leveraging a targeted next-generation sequencing approach. We designed a 20.5 Mb array targeting coding and regulatory regions of genes with a known role in BC (n = 765). The selected genes were either from human BC studies (n = 294) or from within canine mammary tumor associated regions (n = 471). A set of predominantly estrogen receptor positive tumors (ER + 85%) and their normal tissue counterparts (n= 61) were sequenced to ~ 140 × and 85 × mean target coverage, respectively. MuTect2 and VarScan2 were employed to detect single nucleotide variants (SNVs) and copy number aberrations (CNAs), while MutSigCV (SNVs) and GISTIC (CNAs) algorithms estimated the significance of recurrent somatic events. The significantly mutated genes (q ≤ 0.01) were PIK3CA (28% of patients), TP53 (21%) and CDH1 (11%). However, histone modifying genes contained the largest number of variants (KMT2C and ARID1A, together 28%). Mutations in KMT2C were mutually exclusive with PI3KCA mutations (p ≤ 0. 001) and half of these affect the formation of a functional PHD domain. The tumor suppressor CDK10 was deleted in 80% of the cohort while the oncogene MDM4 was amplified. Mutational signature analyses pointed towards APOBEC deaminase activity (COSMIC signature 2) and DNA mismatch repair (COSMIC signature 6). We noticed two significantly distinct patterns related to patient age; TP53 being more mutated in the younger group (29% vs 9% of patients) and CDH23 mutations were absent from the older group. The increased somatic mutation prevalence in the histone modifying genes KMT2C and ARID1A distinguishes the Swedish cohort from previous studies. KMT2C regulates enhancer activation and assists tumor proliferation in a hormone-rich environment, possibly pointing to a role in ER + BC, especially in older cases. Finally, age of onset appears to affect the mutational landscape suggesting that a larger age-diverse population incorporating more molecular subtypes should be studied to elucidate the underlying mechanisms.
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12
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Rockoff SJ, Flanagan MR, Kim JN, Banda K, Calhoun KE, Lam DL. The Radiologist's Role in a Breast Multidisciplinary Tumor Board. J Breast Imaging 2020; 2:372-381. [PMID: 38424959 DOI: 10.1093/jbi/wbaa030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Indexed: 03/02/2024]
Abstract
Breast multidisciplinary tumor boards (MTBs) play an important role in determining treatment. This article serves as a guide for the radiologist participating in a breast MTB, as the information presented at MTB can significantly influence treatment plans and dictate future steps for further patient work-up. Multidisciplinary tumor board preparation involves a careful review of the patient's history while gathering all relevant imaging studies, and reinterpreting them when appropriate. Presented images should be carefully selected, annotated, and displayed clearly before providing final recommendations for localization and incompletely assessed findings. Anatomic staging factors from the AJCC Breast Cancer Staging System, such as tumor size and degree of suspected skin involvement, should be described. In addition, there are many other types of information that the treatment specialists want to know. The surgeon is interested in anatomic information that will help them decide whether breast conservation therapy is feasible or if local structures, such as the nipple, can be spared. The radiation oncologist may need to know whether accelerated partial breast irradiation is feasible or if postmastectomy radiation therapy is indicated. The medical oncologist is looking for factors that may provide an indication for neoadjuvant therapy and ensuring there is a reliable follow-up method for evaluating the response to treatment, such as comparative MRI. Additionally, all specialists need to know the extent of suspected nodal involvement. By clearly and comprehensively presenting this information to the rest of the MTB team, the radiologist provides a vital contribution that guides treatment and ensures adherence to clinical guidelines.
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Affiliation(s)
- Steven J Rockoff
- University of Washington School of Medicine, Department of Radiology, Seattle, WA
| | - Meghan R Flanagan
- University of Washington School of Medicine, Department of Surgery, Seattle, WA
| | - Janice N Kim
- University of Washington School of Medicine, Department of Radiation Oncology, Seattle, WA
| | - Kalyan Banda
- University of Washington School of Medicine, Department of Medicine, Seattle, WA
- Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Kristine E Calhoun
- University of Washington School of Medicine, Department of Surgery, Seattle, WA
| | - Diana L Lam
- University of Washington School of Medicine, Department of Radiology, Seattle, WA
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13
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Keilty D, Nezafat Namini S, Swain M, Maganti M, Cil TD, McCready DR, Cescon DW, Amir E, Fleming R, Mulligan AM, Fyles A, Croke JM, Liu FF, Levin W, Koch CA, Han K. Patterns of Recurrence and Predictors of Survival in Breast Cancer Patients Treated with Neoadjuvant Chemotherapy, Surgery, and Radiation. Int J Radiat Oncol Biol Phys 2020; 108:676-685. [PMID: 32407932 DOI: 10.1016/j.ijrobp.2020.04.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Neoadjuvant chemotherapy (NAC) is standard of care for locally advanced breast cancer. There is wide variation in radiation therapy (RT) practice and limited data describing locoregional relapse (LRR) after NAC. We hypothesized a low LRR risk with modern NAC, surgery, and RT and aimed to elucidate patterns of LRR and predictors of disease-free survival (DFS) and overall survival (OS) in these patients. METHODS AND MATERIALS Data from 416 patients with stage II/III breast cancer treated between 2008 and 2015 with NAC, surgery, and adjuvant RT were reviewed retrospectively. DFS and OS rates were calculated using the Kaplan-Meier method. The LRR rate was estimated using the cumulative incidence function, treating death as a competing risk. Multivariable survival analysis was performed using Cox regression. RESULTS Median follow-up was 4.7 years. Most patients had cT2/3 (74%) cN1 (61%) disease and underwent mastectomy (75%) and axillary dissection (84%). Pathologic complete response (pCR) was achieved in 22% of patients. There were 27 LRRs (including 4 isolated LRRs) and 89 distant failures. Two patients developed LRR 2 months after surgery, before adjuvant RT. LRR could be mapped in 23 patients: most (20) recurred within the RT field; 1 in- and out-of-field; and 2 out-of-field. Five-year LRR, DFS, and OS were 6.4%, 77%, and 90%, respectively. On multivariable analysis, triple-negative subtype (hazard ratio [HR] 2.82; 95% confidence interval [CI], 1.78-4.47; P < .001), stage III disease (HR 1.72; 95% CI, 1.11-2.69; P = .016), and non-pCR (HR 4.76; 95% CI 2.13-10.0; P < .001) were associated with poor DFS and OS (HR 4.13 [95% CI, 2.21-7.72; P < .001]; HR 1.94 [95% CI, 1.001-3.75; P = .049]; and HR 2.38 [95% CI, 0.98-5.88; P = .055], respectively). CONCLUSIONS Patients with breast cancer treated with modern NAC, surgery, and RT have a low 5-year LRR risk, with the majority occurring in-field. Triple-negative subtype, stage III disease, and non-pCR were associated with inferior DFS and OS.
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Affiliation(s)
- Dana Keilty
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Shirin Nezafat Namini
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Monali Swain
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Manjula Maganti
- Department of Biostatistics, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Tulin D Cil
- Department of Surgical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - David R McCready
- Department of Surgical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - David W Cescon
- Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Eitan Amir
- Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Rachel Fleming
- Joint Department of Medical Imaging, Women's College Hospital, University of Toronto, Toronto, ON, Canada
| | - Anna Marie Mulligan
- Laboratory Medicine Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Anthony Fyles
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Jennifer M Croke
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Fei-Fei Liu
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Wilfred Levin
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - C Anne Koch
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Kathy Han
- Radiation Medicine Program, University of Toronto Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.
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14
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Conti A, Duggento A, Indovina I, Guerrisi M, Toschi N. Radiomics in breast cancer classification and prediction. Semin Cancer Biol 2020; 72:238-250. [PMID: 32371013 DOI: 10.1016/j.semcancer.2020.04.002] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 03/30/2020] [Accepted: 04/01/2020] [Indexed: 12/15/2022]
Abstract
Breast Cancer (BC) is the common form of cancer in women. Its diagnosis and screening are usually performed through different imaging modalities such as mammography, magnetic resonance imaging and ultrasound. However, mammography and ultrasound-imaging techniques have limited sensitivity and specificity both in identifying lesions and in differentiating malign from benign lesions, especially in presence of dense breast parenchyma. Due to the higher resolution of magnetic resonance images, MRI represents the method with the higher specificity and sensitivity among all the available tools, in both lesions' identification and diagnosis. However, especially for diagnosis, even MRI has limitations that are only partially solved if combined with mammography. Unfortunately, due to the limits of all these imaging tools, in order to have a certain diagnosis, patients often receive painful and costly bioptics procedures. In this context, several computational approaches have been developed to increase sensitivity, while maintaining the same specificity, in BC diagnosis and screening. Amongst these, radiomics has been increasingly gaining ground in oncology to improve cancer diagnosis, prognosis and treatment. Radiomics derives multiple quantitative features from single or multiple medical imaging modalities, highlighting image traits which are not visible to the naked eye and hence significantly augmenting the discriminatory and predictive potential of medical imaging. This review article aims to summarize the state of the art in radiomics-based BC research. The dominating evidence extracted from the literature points towards a high potential of radiomics in disentangling malignant from benign breast lesions, classifying BC types and grades and also in predicting treatment response and recurrence risk. In the era of personalized medicine, radiomics has the potential to improve diagnosis, prognosis, prediction, monitoring, image-based intervention, and assessment of therapeutic response in BC.
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Affiliation(s)
- Allegra Conti
- Laboratory of Neuromotor Physiology, IRCCS Santa Lucia Foundation, Via Ardeatina, 306, 00179, Rome, Italy; Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
| | - Andrea Duggento
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
| | - Iole Indovina
- Laboratory of Neuromotor Physiology, IRCCS Santa Lucia Foundation, Via Ardeatina, 306, 00179, Rome, Italy; Department of Medicine and Surgery, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Maria Guerrisi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Nicola Toschi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy; Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Boston, MA, United States.
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15
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Newell M, Mackey JR, Bigras G, Alvarez-Camacho M, Goruk S, Ghosh S, Schmidt A, Miede D, Chisotti A, Postovit L, Baker K, Mazurak V, Courneya K, Berendt R, Dong WF, Wood G, Basi SK, Joy AA, King K, Meza-Junco J, Zhu X, Field C. Comparing docosahexaenoic acid (DHA) concomitant with neoadjuvant chemotherapy versus neoadjuvant chemotherapy alone in the treatment of breast cancer (DHA WIN): protocol of a double-blind, phase II, randomised controlled trial. BMJ Open 2019; 9:e030502. [PMID: 31530611 PMCID: PMC6756327 DOI: 10.1136/bmjopen-2019-030502] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Neoadjuvant chemotherapy for breast cancer treatment is prescribed to facilitate surgery and provide confirmation of drug-sensitive disease, and the achievement of pathological complete response (pCR) predicts improved long-term outcomes. Docosahexaenoic acid (DHA) has been shown to reduce tumour growth in preclinical models when combined with chemotherapy and is known to beneficially modulate systemic immune function. The purpose of this trial is to investigate the benefit of DHA supplementation in combination with neoadjuvant chemotherapy in patients with breast cancer. METHODS AND ANALYSIS This is a double-blind, phase II, randomised controlled trial of 52 women prescribed neoadjuvant chemotherapy to test if DHA supplementation enhances chemotherapy efficacy. The DHA supplementation group will take 4.4 g/day DHA orally, and the placebo group will take an equal fat supplement of vegetable oil. The primary outcome will be change in Ki67 labelling index from prechemotherapy core needle biopsy to definitive surgical specimen. The secondary endpoints include assessment of (1) DHA plasma phospholipid content; (2) systemic immune cell types, plasma cytokines and inflammatory markers; (3) tumour markers for apoptosis and tumour infiltrating lymphocytes; (4) rate of pCR in breast and in axillary nodes; (5) frequency of grade 3 and 4 chemotherapy-associated toxicities; and (6) patient-perceived quality of life. The trial has 81% power to detect a significant between-group difference in Ki67 index with a two-sided t-test of less than 0.0497, and accounts for 10% dropout rate. ETHICS AND DISSEMINATION This study has full approval from the Health Research Ethics Board of Alberta - Cancer Committee (Protocol #: HREBA.CC-18-0381). We expect to present the findings of this study to the scientific community in peer-reviewed journals and at conferences. The results of this study will provide evidence for supplementing with DHA during neoadjuvant chemotherapy treatment for breast cancer. TRIAL REGISTRATION NUMBER NCT03831178.
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Affiliation(s)
- Marnie Newell
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - John R Mackey
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
- Alberta Health Services, Edmonton, Alberta, Canada
| | - Gilbert Bigras
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | | | - Susan Goruk
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Sunita Ghosh
- Alberta Health Services, Edmonton, Alberta, Canada
| | | | | | - Ann Chisotti
- Alberta Health Services, Edmonton, Alberta, Canada
| | - Lynne Postovit
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Kristi Baker
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Vera Mazurak
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Kerry Courneya
- Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, Alberta, Canada
| | - Richard Berendt
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Wei-Feng Dong
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - George Wood
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | | | - Anil Abraham Joy
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Karen King
- Alberta Health Services, Edmonton, Alberta, Canada
| | | | - Xiaofu Zhu
- Alberta Health Services, Edmonton, Alberta, Canada
| | - Catherine Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
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