PMID- 34535141 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210921 IS - 1475-2867 (Print) IS - 1475-2867 (Electronic) IS - 1475-2867 (Linking) VI - 21 IP - 1 DP - 2021 Sep 17 TI - Primary breast double-hit lymphoma management and outcomes: a real-world multicentre experience. PG - 498 LID - 10.1186/s12935-021-02198-y [doi] LID - 498 AB - BACKGROUND: Primary breast double-hit lymphoma (PB-DHL) is a rare, highly aggressive malignancy that poses challenges regarding accurate diagnosis and selecting optimal treatment regimens. METHODS: We retrospectively reviewed 48 cases of patients diagnosed with PB-DHL in six academic centres between June 2014 and June 2020 in China. Study-specific data were recorded, including treatment options, therapeutic evaluation, prognostic factors and relapse patterns, and the overall survival (OS) and progression-free survival (PFS) were evaluated. RESULTS: In total, 48 patients were enrolled, with 14 patients treated with DA-EPOCH-R/MA (rituximab, dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin, alternating with high-dose methotrexate and cytarabine), 18 patients treated with DA-EPOCH-R (rituximab, dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin), and 16 patients treated with R-HyperCVAD (rituximab, hyperfractionated cyclophosphamide, vincristine, doxorubicin, dexamethasone, alternating with cytarabine plus methotrexate). The overall 5-year OS and PFS rates were 41.7% (95% confidence interval [CI], 27.6-56.8%) and 37.5% (95% CI, 24.0-52.6%), respectively. Of the three treatment regimens, the 5-year OS was higher in DA-EPOCH-R/MA group than in the DA-EPOCH-R or R-HyperCVAD subgroups (57.1% vs. 38.9% vs. 31.3%; P = 0.016), as was the 5-year PFS (50.0% vs. 38.9% vs. 25.0%; P = 0.035). Autologous stem cell transplantation (ASCT) prolonged the OS and PFS compared with non-ASCT patients (5-year OS: 72.2% vs. 23.3%; P < 0.001; 5-year PFS: 72.2% vs. 16.7 %, P < 0.001). Multivariate analysis identified tumour size, risk stratification, treatment with DA-EPOCH-R/MA, breast irradiation, and ASCT as significant prognostic factors. CONCLUSIONS: DA-EPOCH-R/MA is a promising regimen for PB-DHL, and breast irradiation yields complementary benefits for prognosis. ASCT significantly decreased disease relapse, providing a potential curative PB-DHL intervention and justifying ASCT as first-line therapy for young patients. More effective treatment strategies for PB-DHL patients remain encouraging. CI - (c) 2021. The Author(s). FAU - Zhang, Tingting AU - Zhang T AD - Haematopoietic Stem Cell Transplantation Centre, State Key Laboratory of Experimental Hematology, National Clinical Research centre for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 288 Nanjing Road, Tianjin, 300020, China. FAU - Zhang, Yuanfeng AU - Zhang Y AD - Haematopoietic Stem Cell Transplantation Centre, State Key Laboratory of Experimental Hematology, National Clinical Research centre for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 288 Nanjing Road, Tianjin, 300020, China. AD - Department of Haematology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, Shandong, China. FAU - Fei, Hairong AU - Fei H AD - Department of Haematology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China. FAU - Shi, Xue AU - Shi X AD - Department of Haematology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China. FAU - Wang, Liang AU - Wang L AD - Department of Haematology, Shengli Oilfield Central Hospital, Dongying, 257000, China. FAU - Wang, Peijun AU - Wang P AD - Department of Haematology, Qingdao Centre Hospital, Qingdao, 266042, Shandong, China. FAU - Yu, Jie AU - Yu J AD - Department of Haematology, Weihai Municipal Hospital, Weihai, 264200, Shandong, China. FAU - Shen, Yuyan AU - Shen Y AD - Haematopoietic Stem Cell Transplantation Centre, State Key Laboratory of Experimental Hematology, National Clinical Research centre for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 288 Nanjing Road, Tianjin, 300020, China. shenyuyan@ihcams.ac.cn. FAU - Feng, Sizhou AU - Feng S AUID- ORCID: 0000-0001-5304-3301 AD - Haematopoietic Stem Cell Transplantation Centre, State Key Laboratory of Experimental Hematology, National Clinical Research centre for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 288 Nanjing Road, Tianjin, 300020, China. doctor_szhfeng@sina.com. LA - eng GR - 81900182/national outstanding youth foundation of china/ PT - Journal Article DEP - 20210917 PL - England TA - Cancer Cell Int JT - Cancer cell international JID - 101139795 PMC - PMC8447786 OTO - NOTNLM OT - Double-hit lymphoma OT - High-grade B-cell lymphomas OT - Primary breast lymphoma OT - Prognosis OT - Relapse OT - Therapy COIS- All authors declared no competing interests. EDAT- 2021/09/19 06:00 MHDA- 2021/09/19 06:01 PMCR- 2021/09/17 CRDT- 2021/09/18 05:26 PHST- 2021/06/10 00:00 [received] PHST- 2021/09/06 00:00 [accepted] PHST- 2021/09/18 05:26 [entrez] PHST- 2021/09/19 06:00 [pubmed] PHST- 2021/09/19 06:01 [medline] PHST- 2021/09/17 00:00 [pmc-release] AID - 10.1186/s12935-021-02198-y [pii] AID - 2198 [pii] AID - 10.1186/s12935-021-02198-y [doi] PST - epublish SO - Cancer Cell Int. 2021 Sep 17;21(1):498. doi: 10.1186/s12935-021-02198-y.