Neoadjuvant Chemoradiotherapy Compared to Neoadjuvant Chemotherapy for Luminal-Type Locally Advanced Breast Cancer: A Clinical Study

This study focuses on preoperative treatment modalities for luminal-type locally advanced breast cancer. Based on modern precision radiotherapy technologies such as MRI-Linac, CyberKnife, and VMAT, it aims to compare the pCR rate, breast conserving surgery (BCS) rate, progression-free survival (PFS), and treatment-related side effects between preoperative neoadjuvant chemotherapy and preoperative neoadjuvant SBRT combined with chemotherapy in patients with this type of breast cancer. The goal is to provide new strategic options for the preoperative treatment of luminal-type locally advanced breast cancer.

Sex

All

Minimum age

18 Years

Maximum age

70 Years

Inclusion Criteria:

1. Pathologically confirmed invasive breast cancer ;
2. Breast MRI showing stages IIB to IIIC (2017 AJCC 8th edition staging);
3. Clinical staging confirmed by chest MRI and/or axillary ultrasound, as well as CT scans of the neck, abdomen, and pelvis, and bone scintigraphy, including T and N staging and assessment of distant metastasis;
4. Karnofsky performance score ≥80 or ECOG performance status of 0-1;
5. No history of allergies to doxorubicin, cyclophosphamide, paclitaxel/docetaxel;
6. No prior exposure to radiotherapy, chemotherapy, endocrine therapy, targeted therapy, or immunotherapy.

Exclusion Criteria:

1. History of malignancy at other sites, excluding curable non-melanoma skin cancer and carcinoma in situ of the cervix;
2. Inability to complete MRI;
3. Inflammatory breast cancer;
4. Bilateral or multifocal primary tumors;
5. Active infection currently present; clinically evident heart disease; myocardial infarction or cerebrovascular accident within 6 months prior to enrollment.

• RESULTVasmel JE, Charaghvandi RK, Houweling AC, Philippens MEP, van Asselen B, Vreuls CPH, van Diest PJ, van Leeuwen AMG, van Gorp J, Witkamp AJ, Koelemij R, Doeksen A, Sier MF, van Dalen T, van der Wall E, van Dam I, Veldhuis WB, Kirby AM, Verkooijen HM, van den Bongard HJGD. Tumor Response After Neoadjuvant Magnetic Resonance Guided Single Ablative Dose Partial Breast Irradiation. Int J Radiat Oncol Biol Phys. 2020 Mar 15;106(4):821-829. doi: 10.1016/j.ijrobp.2019.11.406. Epub 2019 Dec 5. PMID 31812720
• RESULTNichols E, Kesmodel SB, Bellavance E, Drogula C, Tkaczuk K, Cohen RJ, Citron W, Morgan M, Staats P, Feigenberg S, Regine WF. Preoperative Accelerated Partial Breast Irradiation for Early-Stage Breast Cancer: Preliminary Results of a Prospective, Phase 2 Trial. Int J Radiat Oncol Biol Phys. 2017 Mar 15;97(4):747-753. doi: 10.1016/j.ijrobp.2016.11.030. Epub 2016 Nov 27. PMID 28244410
• RESULTSemiglazov VF, Topuzov EE, Bavli JL, Moiseyenko VM, Ivanova OA, Seleznev IK, Orlov AA, Barash NY, Golubeva OM, Chepic OF. Primary (neoadjuvant) chemotherapy and radiotherapy compared with primary radiotherapy alone in stage IIb-IIIa breast cancer. Ann Oncol. 1994 Sep;5(7):591-5. doi: 10.1093/oxfordjournals.annonc.a058929. PMID 7993833
• RESULTIshitobi M, Suzuki O, Komoike Y, Ohsumi S, Nakahara S, Yagi T, Yoshinami T, Tomita Y, Inaji H. Phase II study of neoadjuvant anastrozole and concurrent radiotherapy for postmenopausal breast cancer patients. Breast Cancer. 2014 Sep;21(5):550-6. doi: 10.1007/s12282-012-0426-2. Epub 2012 Nov 2. PMID 23117619
• RESULTBollet MA, Kirova YM, Antoni G, Pierga JY, Sigal-Zafrani B, Laki F, Campana F, Dendale R, Salmon R, Cottu P, Fourquet A. Responses to concurrent radiotherapy and hormone-therapy and outcome for large breast cancers in post-menopausal women. Radiother Oncol. 2007 Dec;85(3):336-45. doi: 10.1016/j.radonc.2007.10.003. Epub 2007 Oct 29. PMID 17967495
• RESULTSpring LM, Gupta A, Reynolds KL, Gadd MA, Ellisen LW, Isakoff SJ, Moy B, Bardia A. Neoadjuvant Endocrine Therapy for Estrogen Receptor-Positive Breast Cancer: A Systematic Review and Meta-analysis. JAMA Oncol. 2016 Nov 1;2(11):1477-1486. doi: 10.1001/jamaoncol.2016.1897.