1
|
Maahs L, Patel P, Koshy M, Sweiss K, Chen Z, Xu Z, Aydogan B, Rondelli D. High dose total marrow irradiation (TMI) does not increase long-term toxicity of myeloablative fludarabine/busulfan (FluBu4) conditioning regimen in allogeneic hematopoietic stem cell transplantation (HSCT). Eur J Haematol 2024. [PMID: 38566462 DOI: 10.1111/ejh.14195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/29/2024] [Accepted: 03/08/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES Based on a previous phase 1 study, total marrow irradiation (TMI) at 9Gy was added to a myeloablative FluBu4 conditioning regimen in allogeneic hematopoietic stem cell transplantation (HSCT) for myeloid malignancies. Here, we report on the long-term toxicity of TMI combined with FluBu4 and compare it to patients who received only FluBu4. METHODS We retrospectively analyzed 38 consecutive patients conditioned with FluBu4/TMI (n = 15) or FluBu4 (n = 23, control group) who had at least 1 year follow-up post-transplant. The rate of long-term adverse events that have been previously associated with total body irradiation (TBI) was analyzed in the two groups. RESULTS The baseline characteristics did not differ between the two groups. The control group had a longer median follow-up (71.2 mo) than the TMI group (38.5 mo) (p = .004). The most common adverse events were xerostomia, dental complications, cataracts, or osteopenia and did not differ between the two groups. Cognitive dysfunction or noninfectious pneumonitis, often detected after high dose TBI, were also not different in the two groups (p = .12 and p = .7, respectively). There was no grade 4 adverse event. CONCLUSION Our results suggest that a conditioning regimen with TMI 9Gy and FluBu4 does not increase long-term adverse events after allogeneic HSCT.
Collapse
Affiliation(s)
- Lucas Maahs
- Division of Hematology-Oncology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Pritesh Patel
- Division of Hematology-Oncology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Matthew Koshy
- Department of Radiation Oncology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois, USA
- University of Illinois Cancer Center, Chicago, Illinois, USA
| | - Karen Sweiss
- University of Illinois Cancer Center, Chicago, Illinois, USA
- College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Zhengjia Chen
- University of Illinois Cancer Center, Chicago, Illinois, USA
| | - Ziqiao Xu
- University of Illinois Cancer Center, Chicago, Illinois, USA
| | - Bulent Aydogan
- Division of the Biological Sciences, University of Chicago, Chicago, Illinois, USA
| | - Damiano Rondelli
- Division of Hematology-Oncology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
- University of Illinois Cancer Center, Chicago, Illinois, USA
| |
Collapse
|
2
|
Parsons D, Lim TY, Teruel JR, Galavis P, Agostinelli S, Liang J, Mancosu P, Cherpak A, Stanley DN, Ahn KH, Guo B, Gonzalez Y, Burmeister J, Wong JY, Gu X, Kim GGY. Considerations for intensity modulated total body or total marrow and lymphoid irradiation. Clin Transl Radiat Oncol 2023; 43:100674. [PMID: 37753462 PMCID: PMC10518336 DOI: 10.1016/j.ctro.2023.100674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/18/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
We compiled a sampling of the treatment techniques of intensity-modulated total body irradiation, total marrow irradiation and total marrow and lymphoid irradiation utilized by several centers across North America and Europe. This manuscript does not serve as a consensus guideline, but rather is meant to serve as a convenient reference for centers that are considering starting an intensity-modulated program.
Collapse
Affiliation(s)
- David Parsons
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Tze Yee Lim
- Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jose R. Teruel
- Department of Radiation Oncology, New York University Langone Health, New York, NY, USA
| | - Paulina Galavis
- Department of Radiation Oncology, New York University Langone Health, New York, NY, USA
| | | | - Jieming Liang
- Department of Radiation Oncology, City of Hope National Medical Center City of Hope National Medical Center, Duarte, CA, USA
| | - Pietro Mancosu
- IRCCS Humanitas Research Hospital, Medical Physics Unit, Rozzano, Milan, Italy
| | - Amanda Cherpak
- Department of Radiation Oncology and Department of Medical Physics, Nova Scotia Health, Halifax, Nova Scotia, Canada
| | - Dennis N. Stanley
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Kang-Hyun Ahn
- Department of Radiation Oncology, University of Illinois, Chicago, IL and Radiation and Cellular Oncology, University of Chicago, Chicago, IL, USA
| | - Bingqi Guo
- Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Yesenia Gonzalez
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jay Burmeister
- Department of Oncology, Wayne State University School of Medicine, Karmanos Cancer Center, Detroit, MI, USA
| | - Jeffrey Y.C. Wong
- Department of Radiation Oncology, City of Hope National Medical Center City of Hope National Medical Center, Duarte, CA, USA
| | - Xuejun Gu
- Department of Radiation Oncology, Stanford University, Palo Alto, CA, USA
| | - Grace Gwe-Ya Kim
- Radiation Medicine and Applied Science, University of California San Diego, La Jolla, CA, USA
| |
Collapse
|
3
|
Dei D, Lambri N, Stefanini S, Vernier V, Brioso RC, Crespi L, Clerici E, Bellu L, De Philippis C, Loiacono D, Navarria P, Reggiori G, Bramanti S, Rodari M, Tomatis S, Chiti A, Carlo-Stella C, Scorsetti M, Mancosu P. Internal Guidelines for Reducing Lymph Node Contour Variability in Total Marrow and Lymph Node Irradiation. Cancers (Basel) 2023; 15:cancers15051536. [PMID: 36900326 PMCID: PMC10000500 DOI: 10.3390/cancers15051536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
BACKGROUND The total marrow and lymph node irradiation (TMLI) target includes the bones, spleen, and lymph node chains, with the latter being the most challenging structures to contour. We evaluated the impact of introducing internal contour guidelines to reduce the inter- and intraobserver lymph node delineation variability in TMLI treatments. METHODS A total of 10 patients were randomly selected from our database of 104 TMLI patients so as to evaluate the guidelines' efficacy. The lymph node clinical target volume (CTV_LN) was recontoured according to the guidelines (CTV_LN_GL_RO1) and compared to the historical guidelines (CTV_LN_Old). Both topological (i.e., Dice similarity coefficient (DSC)) and dosimetric (i.e., V95 (the volume receiving 95% of the prescription dose) metrics were calculated for all paired contours. RESULTS The mean DSCs were 0.82 ± 0.09, 0.97 ± 0.01, and 0.98 ± 0.02, respectively, for CTV_LN_Old vs. CTV_LN_GL_RO1, and between the inter- and intraobserver contours following the guidelines. Correspondingly, the mean CTV_LN-V95 dose differences were 4.8 ± 4.7%, 0.03 ± 0.5%, and 0.1 ± 0.1%. CONCLUSIONS The guidelines reduced the CTV_LN contour variability. The high target coverage agreement revealed that historical CTV-to-planning-target-volume margins were safe, even if a relatively low DSC was observed.
Collapse
Affiliation(s)
- Damiano Dei
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Nicola Lambri
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
- Correspondence: (N.L.); (S.T.)
| | - Sara Stefanini
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Veronica Vernier
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Ricardo Coimbra Brioso
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, 20133 Milan, Italy
| | - Leonardo Crespi
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, 20133 Milan, Italy
- Health Data Science Centre, Human Technopole, 20157 Milan, Italy
| | - Elena Clerici
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Luisa Bellu
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Chiara De Philippis
- Department of Oncology and Hematology, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Daniele Loiacono
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, 20133 Milan, Italy
| | - Pierina Navarria
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Giacomo Reggiori
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Stefania Bramanti
- Department of Oncology and Hematology, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Marcello Rodari
- Department of Nuclear Medicine, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Stefano Tomatis
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
- Correspondence: (N.L.); (S.T.)
| | - Arturo Chiti
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Nuclear Medicine, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Carmelo Carlo-Stella
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Oncology and Hematology, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Marta Scorsetti
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20072 Milan, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Pietro Mancosu
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| |
Collapse
|
4
|
Zhang H, Fan Z, Huang F, Han L, Xu Y, Xu N, Deng L, Wang S, Lin D, Luo X, Zhang Q, Liu X, Li X, Liang X, Xie S, Qu H, Yu S, Zhou H, Shi P, Xuan L, Lin R, Liu H, Jin H, Sun J, Liu Q. Busulfan Plus Cyclophosphamide Versus Total Body Irradiation Plus Cyclophosphamide for Adults Acute B Lymphoblastic Leukemia: An Open-Label, Multicenter, Phase III Trial. J Clin Oncol 2023; 41:343-353. [PMID: 36084276 PMCID: PMC9839269 DOI: 10.1200/jco.22.00767] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
PURPOSE It remains controversial whether busulfan-based versus total body irradiation (TBI)-based regimens have comparable outcomes in patients with acute lymphoblastic leukemia (ALL) undergoing allogeneic hematopoietic stem-cell transplantation (allo-HSCT). We investigated the efficacy and toxicity of busulfan plus cyclophosphamide (BuCy) and TBI plus cyclophosphamide (TBI-Cy) conditioning in allo-HSCT for adult standard-risk B-cell-ALL in first complete remission (CR1). PATIENTS AND METHODS We performed an open-label, randomized phase III trial at 13 hospitals in China. Eligible patients (age 14-65 years) had standard-risk ALL in CR1. Patients were randomly assigned (1:1) to BuCy (0.8 mg/kg four times per day on days -7 to -4 and cyclophosphamide 60 mg/kg once daily on days -3 to -2) or TBI-Cy (4.5 Gy TBI on days -5 to -4 and cyclophosphamide 60 mg/kg once daily on days -3 to -2). The primary end point was 2-year overall survival. Analysis was per protocol. This trial is registered with ClinicalTrials.gov (identifier: NCT02670252) and is complete. RESULTS Between January 2016 and February 2020, 275 patients were assigned to receive BuCy (273 assessed) and 275 to TBI-Cy (272 assessed). The 2-year overall survival was 76.6% (95% CI, 71.7 to 81.8) and 79.4% (74.7 to 84.4; P = .457; difference 2.9%; 95% CI, -4.1 to 9.8; P = .022), indicating noninferiority of BuCy. The 2-year relapse was 20.2% (95% CI, 15.6 to 25.1) and 18.4% (14.0 to 23.2; P = .616), and the nonrelapse mortality was 11.0% (95% CI, 7.6 to 15.0) and 11.0% (7.7 to 15.1; P = .988) in the BuCy and TBI-Cy groups, respectively. There were no differences in regimen-related toxicity, graft-versus-host disease, or late effects between the two groups. CONCLUSION The BuCy regimen has noninferior efficiency and safety as TBI-Cy (4.5 Gy × 2) for patients with adult standard-risk B cell-ALL in CR1 undergoing HLA-matched allo-HSCT.
Collapse
Affiliation(s)
- Haiyan Zhang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhiping Fan
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Fen Huang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lijie Han
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yajing Xu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Na Xu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lan Deng
- Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Shunqing Wang
- Department of Hematology, Guangzhou First People's Hospital, Guangzhou, China
| | - Dongjun Lin
- Department of Hematology, the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Xiaodan Luo
- Department of Hematology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qing Zhang
- Department of Hematology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Xiaodan Liu
- Department of Hematology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xudong Li
- Department of Hematology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xinquan Liang
- Department of Hematology, First People's Hospital of Chenzhou, Chenzhou, China
| | - Shuangfeng Xie
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Hong Qu
- Department of Hematology, Guangzhou Panyu Central Hospital, Guangzhou, China
| | - Sijian Yu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongsheng Zhou
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Pengcheng Shi
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Li Xuan
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ren Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hui Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hua Jin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jing Sun
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qifa Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China,Qifa Liu, MD, Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China 510000; e-mail:
| |
Collapse
|
5
|
Kerbauy MN, Arcuri LJ, Favareto SL, de Rezende ACP, Hamerschlak N. Total marrow irradiation in hematopoietic stem cell transplantation for hematologic malignancies. Front Med (Lausanne) 2023; 10:1155954. [PMID: 37153098 PMCID: PMC10157478 DOI: 10.3389/fmed.2023.1155954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/23/2023] [Indexed: 05/09/2023] Open
Abstract
Total body irradiation (TBI) has been an essential component of the conditioning regimen in hematopoietic cell transplantation for many years. However, higher doses of TBI reduce disease relapse at the expense of more significant toxicities. Therefore, total marrow irradiation and total marrow and lymphoid irradiation have been developed to deliver organ-sparing targeted radiotherapy. Data from different studies show that TMI and TMLI can be safely administered in escalating doses in association with different chemotherapy conditioning regimen protocols, in situations with unmet needs, such as multiple myeloma, high-risk hematologic malignancies, relapsed or refractory leukemias, and elderly or frail patients, with low rates of transplant-related mortality. We reviewed the literature on applying TMI and TMLI techniques in autologous and allogeneic hematopoietic stem cell transplantation in different clinical situations.
Collapse
Affiliation(s)
- Mariana Nassif Kerbauy
- Department of Hematology and Bone Marrow Transplantation, Hospital Israelita Albert Einstein, São Paulo, Brazil
- *Correspondence: Mariana Nassif Kerbauy
| | | | | | | | - Nelson Hamerschlak
- Department of Hematology and Bone Marrow Transplantation, Hospital Israelita Albert Einstein, São Paulo, Brazil
| |
Collapse
|
6
|
Ladbury C, Hao C, Yang D, Hui S, Han C, Liu A, Salhotra A, Nakamura R, Rosenthal J, Stein A, Wong J, Dandapani S. Long-term follow up of patients with hematological malignancies treated with total body irradiation using intensity modulated radiation therapy. Front Oncol 2022; 12:1044539. [PMID: 36531001 PMCID: PMC9755353 DOI: 10.3389/fonc.2022.1044539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/18/2022] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND With the advent of modern radiation treatment technologies such as intensity modulated radiation therapy (IMRT), there has been increasing interest in its use for total body irradiation (TBI) conditioning regimens for hematopoietic cell transplantation (HCT) to achieve lower doses to critical organs such as the lungs and kidneys. Although this has been reported on in early studies, long-term safety and efficacy data is limited. METHODS We performed a single institution matched-pair retrospective analysis of patients treated with IMRT TBI and standard TBI between 2010 and 2020 to provide data on long-term outcomes. Patients with hematologic malignancies, who could not tolerate standing for traditional TBI or who received prior radiation received IMRT TBI. Patients were matched based on age, diagnosis, disease status, and year of transplant, and were matched 2:1 to the standard TBI and IMRT TBI cohorts. Patient and treatment characteristics, toxicity, graft-versus-host disease (GVHD), dosimetry, and outcomes were evaluated for each cohort. RESULTS A total of 13 patients met inclusion criteria for the IMRT cohort, leading to 26 patients in the standard TBI cohort. There was no significant difference in relevant clinical factors between the cohorts. Reasons for using IMRT over conventional TBI included being unable to stand (n=5), prior radiation (n=5), and pediatric patient requiring anesthesia (n=3). Among living patients, median follow-up for all patients was 5.1 years in the IMRT TBI cohort and 5.5 years in the standard TBI cohort. The 5-yr estimate of OS was 68% in the IMRT TBI cohort and 60% in the standard TBI cohort (p=0.706). The 5-yr estimate of RFS was 54% in the IMRT TBI cohort and 60% in the standard TBI cohort (p=0.529). There was no clinically significant pneumonitis, nephritis, hypothyroidism, or cataracts reported in the IMRT TBI cohort. 41.7% of patients in the IMRT TBI cohort and 79.2% of patients in the standard TBI cohort experienced Grade II-IV acute GVHD (p=0.023). CONCLUSIONS IMRT TBI appears to lead to favorable long-term outcome and dosimetry, and therefore potentially improved long-term toxicity profile compared to conventional TBI. IMRT TBI warrants further investigation as part of larger prospective trials.
Collapse
Affiliation(s)
- Colton Ladbury
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| | - Claire Hao
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| | - Dongyun Yang
- Division of Biostatistics, City of Hope National Medical Center, Duarte, CA, United States
| | - Susanta Hui
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| | - Chunhui Han
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| | - An Liu
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| | - Amandeep Salhotra
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, United States
| | - Ryotaro Nakamura
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, United States
| | - Joseph Rosenthal
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, United States
| | - Anthony Stein
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, United States
| | - Jeffrey Wong
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| | - Savita Dandapani
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States
| |
Collapse
|
7
|
Ogawa H, Konishi T, Najima Y, Kito S, Hashimoto S, Kato C, Sakai S, Kanbara Y, Atsuta Y, Konuma R, Wada A, Murakami D, Nakasima S, Uchibori Y, Onai D, Hamamura A, Nishijima A, Shingai N, Toya T, Shimizu H, Kobayashi T, Ohashi K, Doki N, Murofushi KN. Phase I trial of myeloablative conditioning with 3-day total marrow and lymphoid irradiation for leukemia. Cancer Sci 2022; 114:596-605. [PMID: 36221800 PMCID: PMC9899623 DOI: 10.1111/cas.15611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/10/2022] [Accepted: 09/20/2022] [Indexed: 02/07/2023] Open
Abstract
This prospective phase I trial aimed to determine the recommended dose of 3-day total marrow and lymphoid irradiation (TMLI) for a myeloablative conditioning regimen by increasing the dose per fraction. The primary end-point of this single-institution dose escalation study was the recommended TMLI dose based on the frequency of dose-limiting toxicity (DLT) ≤100 days posthematopoietic stem cell transplantation (HSCT); a 3 + 3 design was used to evaluate the safety of TMLI. Three dose levels of TMLI (14/16/18 Gy in six fractions over 3 days) were set. The treatment protocol began at 14 Gy. Dose-limiting toxicities were defined as grade 3 or 4 nonhematological toxicities. Nine patients, with a median age of 42 years (range, 35-48), eight with acute lymphoblastic leukemia and one with chronic myeloblastic leukemia, received TMLI followed by unrelated bone marrow transplant. The median follow-up period after HSCT was 575 days (range, 253-1037). Three patients were enrolled for each dose level. No patient showed DLT within 100 days of HSCT. The recommended dose of 3-day TMLI was 18 Gy in six fractions. All patients achieved neutrophil engraftment at a median of 19 days (range, 14-25). One-year overall and disease-free survival rates were 83.3% and 57.1%, respectively. Three patients experienced relapse, and no nonrelapse mortality was documented during the observation period. One patient died due to disease relapse 306 days post-HSCT. The recommended dose of 3-day TMLI was 18 Gy in six fractions. The efficacy evaluation of this regimen is currently being planned in a phase II study.
Collapse
Affiliation(s)
- Hiroaki Ogawa
- Division of Radiation Oncology, Department of RadiologyTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Tatsuya Konishi
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Yuho Najima
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Satoshi Kito
- Division of Radiation Oncology, Department of RadiologyTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Shimpei Hashimoto
- Division of Radiation Oncology, Department of RadiologyTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Chika Kato
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Satoshi Sakai
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Yasuhiro Kanbara
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Yuya Atsuta
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Ryosuke Konuma
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Atsushi Wada
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Daisuke Murakami
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Shiori Nakasima
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Yusuke Uchibori
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Daishi Onai
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Atsushi Hamamura
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Akihiko Nishijima
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Naoki Shingai
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Takashi Toya
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Hiroaki Shimizu
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Takeshi Kobayashi
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Kazuteru Ohashi
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Noriko Doki
- Hematology DivisionTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| | - Keiko Nemoto Murofushi
- Division of Radiation Oncology, Department of RadiologyTokyo Metropolitan Cancer and Infectious Diseases Center, Komagome HospitalTokyoJapan
| |
Collapse
|
8
|
Kavak AG, Surucu M, Ahn KH, Pearson E, Aydogan B. Impact of respiratory motion on lung dose during total marrow irradiation. Front Oncol 2022; 12:924961. [PMID: 36330489 PMCID: PMC9622752 DOI: 10.3389/fonc.2022.924961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 09/16/2022] [Indexed: 11/21/2022] Open
Abstract
We evaluated the impact of respiratory motion on the lung dose during linac-based intensity-modulated total marrow irradiation (IMTMI) using two different approaches: (1) measurement of doses within the lungs of an anthropomorphic phantom using thermoluminescent detectors (TLDs) and (2) treatment delivery measurements using ArcCHECK where gamma passing rates (GPRs) and the mean lung doses were calculated and compared with and without motion. In the first approach, respiratory motions were simulated using a programmable motion platform by using typical published peak-to-peak motion amplitudes of 5, 8, and 12 mm in the craniocaudal (CC) direction, denoted here as M1, M2, and M3, respectively, with 2 mm in both anteroposterior (AP) and lateral (LAT) directions. TLDs were placed in five selected locations in the lungs of a RANDO phantom. Average TLD measurements obtained with motion were normalized to those obtained with static phantom delivery. The mean dose ratios were 1.01 (0.98–1.03), 1.04 (1.01–1.09), and 1.08 (1.04–1.12) for respiratory motions M1, M2, and M3, respectively. To determine the impact of directional respiratory motion, we repeated the experiment with 5-, 8-, and 12-mm motion in the CC direction only. The differences in average TLD doses were less than 1% when compared with the M1, M2, and M3 motions indicating a minimal impact from CC motion on lung dose during IMTMI. In the second experimental approach, we evaluated extreme respiratory motion 15 mm excursion in only the CC direction. We placed an ArcCHECK device on a commercial motion platform and delivered the clinical IMTMI plans of five patients. We compared, with and without motion, the dose volume histograms (DVHs) and mean lung dose calculated with the ArcCHECK-3DVH tool as well as GPR with 3%, 5%, and 10% dose agreements and a 3-mm constant distance to agreement (DTA). GPR differed by 11.1 ± 2.1%, 3.8 ± 1.5%, and 0.1 ± 0.2% with dose agreement criteria of 3%, 5%, and 10%, respectively. This indicates that respiratory motion impacts dose distribution in small and isolated parts of the lungs. More importantly, the impact of respiratory motion on the mean lung dose, a critical indicator for toxicity in IMTMI, was not statistically significant (p > 0.05) based on the Student’s t-test. We conclude that most patients treated with IMTMI will have negligible dose uncertainty due to respiratory motion. This is particularly reassuring as lung toxicity is the main concern for future IMTMI dose escalation studies.
Collapse
Affiliation(s)
- Ayse Gulbin Kavak
- Department of Radiation Oncology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Murat Surucu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, United States
| | - Kang-Hyun Ahn
- Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL, United States
- Department of Radiation Oncology, University of Illinois at Chicago Medical Center, Chicago, IL, United States
| | - Erik Pearson
- Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL, United States
| | - Bulent Aydogan
- Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL, United States
- Department of Radiation Oncology, University of Illinois at Chicago Medical Center, Chicago, IL, United States
- *Correspondence: Bulent Aydogan, ;
| |
Collapse
|
9
|
Ahn KH, Rondelli D, Koshy M, Partouche JA, Hasan Y, Liu H, Yenice K, Aydogan B. Knowledge-based planning for multi-isocenter VMAT total marrow irradiation. Front Oncol 2022; 12:942685. [PMID: 36267964 PMCID: PMC9577613 DOI: 10.3389/fonc.2022.942685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 09/20/2022] [Indexed: 12/04/2022] Open
Abstract
Purpose Total marrow irradiation (TMI) involves optimization of extremely large target volumes and requires extensive clinical experience and time for both treatment planning and delivery. Although volumetric modulated arc therapy (VMAT) achieves substantial reduction in treatment delivery time, planning process still presents a challenge due to use of multiple isocenters and multiple overlapping arcs. We developed and evaluated a knowledge-based planning (KBP) model for VMAT-TMI to address these clinical challenges. Methods Fifty-one patients previously treated in our clinic were selected for the model training, while 22 patients from another clinic were used as a test set. All plans used a 3-isocenter to cover sub-target volumes of head and neck (HN), chest, and pelvis. Chest plan was performed first and then used as the base dose for both the HN and pelvis plans to reduce hot spots around the field junctions. This resulted in a wide range of dose-volume histograms (DVH). To address this, plans without the base-dose plan were optimized and added to the library to train the model. Results KBP achieved our clinical goals (95% of PTV receives 100% of Rx) in a single day, which used to take 4-6 days of effort without KBP. Statistically significant reductions with KBP were observed in the mean dose values to brain, lungs, oral cavity and lenses. KBP substantially improved 105% dose spillage (14.1% ± 2.4% vs 31.8% ± 3.8%), conformity index (1.51 ± 0.06 vs 1.81 ± 0.12) and homogeneity index (1.25 ± 0.02 vs 1.33 ± 0.03). Conclusions KBP improved dosimetric performance with uniform quality. It reduced dependence on planner experience and achieved a factor of 5 reduction in planning time to produce quality plans to allow its wide-spread clinical implementation.
Collapse
Affiliation(s)
- Kang-Hyun Ahn
- Department of Radiation Oncology, University of Illinois, Chicago, IL, United States
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
| | - Damiano Rondelli
- Division of Hematology/Oncology, University of Illinois, Chicago, IL, United States
| | - Matthew Koshy
- Department of Radiation Oncology, University of Illinois, Chicago, IL, United States
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
| | - Julien A. Partouche
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
| | - Yasmin Hasan
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
| | - Hongtao Liu
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
| | - Kamil Yenice
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
| | - Bulent Aydogan
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, United States
- *Correspondence: Bulent Aydogan,
| |
Collapse
|
10
|
Wong JY, Liu A, Han C, Dandapani S, Schultheiss T, Palmer J, Yang D, Somlo G, Salhotra A, Hui S, Al Malki MM, Rosenthal J, Stein A. Total marrow irradiation (TMI): Addressing an unmet need in hematopoietic cell transplantation - a single institution experience review. Front Oncol 2022; 12:1003908. [PMID: 36263219 PMCID: PMC9574324 DOI: 10.3389/fonc.2022.1003908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/12/2022] [Indexed: 12/02/2022] Open
Abstract
Purpose TMI utilizes IMRT to deliver organ sparing targeted radiotherapy in patients undergoing hematopoietic cell transplantation (HCT). TMI addresses an unmet need, specifically patients with refractory or relapsed (R/R) hematologic malignancies who have poor outcomes with standard HCT regimens and where attempts to improve outcomes by adding or dose escalating TBI are not possible due to increased toxicities. Over 500 patients have received TMI at this center. This review summarizes this experience including planning and delivery, clinical results, and future directions. Methods Patients were treated on prospective allogeneic HCT trials using helical tomographic or VMAT IMRT delivery. Target structures included the bone/marrow only (TMI), or the addition of lymph nodes, and spleen (total marrow and lymphoid irradiation, TMLI). Total dose ranged from 12 to 20 Gy at 1.5-2.0 Gy fractions twice daily. Results Trials demonstrate engraftment in all patients and a low incidence of radiation related toxicities and extramedullary relapses. In R/R acute leukemia TMLI 20 Gy, etoposide, and cyclophosphamide (Cy) results in a 1-year non-relapse mortality (NRM) rate of 6% and 2-year overall survival (OS) of 48%; TMLI 12 Gy added to fludarabine (flu) and melphalan (mel) in older patients (≥ 60 years old) results in a NRM rate of 33% comparable to flu/mel alone, and 5-year OS of 42%; and TMLI 20 Gy/flu/Cy and post-transplant Cy (PTCy) in haplo-identical HCT results in a 2-year NRM rate of 13% and 1-year OS of 83%. In AML in complete remission, TMLI 20 Gy and PTCy results in 2-year NRM, OS, and GVHD free/relapse-free survival (GRFS) rates of 0%, 86·7%, and 59.3%, respectively. Conclusion TMI/TMLI shows significant promise, low NRM rates, the ability to offer myeloablative radiation containing regimens to older patients, the ability to dose escalate, and response and survival rates that compare favorably to published results. Collaboration between radiation oncology and hematology is key to successful implementation. TMI/TMLI represents a paradigm shift from TBI towards novel strategies to integrate a safer and more effective target-specific radiation therapy into HCT conditioning beyond what is possible with TBI and will help expand and redefine the role of radiotherapy in HCT.
Collapse
Affiliation(s)
- Jeffrey Y.C. Wong
- Departments of Radiation Oncology, City of Hope, Duarte, CA, United States
| | - An Liu
- Departments of Radiation Oncology, City of Hope, Duarte, CA, United States
| | - Chunhui Han
- Departments of Radiation Oncology, City of Hope, Duarte, CA, United States
| | - Savita Dandapani
- Departments of Radiation Oncology, City of Hope, Duarte, CA, United States
| | | | - Joycelynne Palmer
- Department Computational and Quantitative Medicine, City of Hope, Duarte, CA, United States
| | - Dongyun Yang
- Department Computational and Quantitative Medicine, City of Hope, Duarte, CA, United States
| | - George Somlo
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, United States
| | - Amandeep Salhotra
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, United States
| | - Susanta Hui
- Departments of Radiation Oncology, City of Hope, Duarte, CA, United States
| | - Monzr M. Al Malki
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, United States
| | - Joseph Rosenthal
- Department of Pediatrics, City of Hope, Duarte, CA, United States
| | - Anthony Stein
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, United States
| |
Collapse
|
11
|
A phase 1 trial utilizing TMI with fludarabine-melphalan in patients with hematologic malignancies undergoing second allo-SCT. Blood Adv 2022; 7:285-292. [PMID: 35851593 PMCID: PMC9898602 DOI: 10.1182/bloodadvances.2022007530] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 07/05/2022] [Accepted: 07/05/2022] [Indexed: 02/01/2023] Open
Abstract
Relapse after allogeneic stem cell transplantation (allo-SCT) remains the primary cause of treatment failure. A second SCT can result in long-term survival in a subset of patients, but the relapse rate remains high. We conducted a single-center, phase 1, modified 3 + 3 dose-escalation study of the feasibility of combining intensity-modulated total marrow irradiation (IM-TMI) with fludarabine and melphalan for conditioning. Between December 2015 and May 2020, 21 patients with relapsed hematologic disease undergoing second or greater allo-SCT were treated with IM-TMI doses of 6 Gy, 9 Gy, or 12 Gy. Dose-limiting toxicity was defined as a grade 3 or higher treatment-related adverse event; mucositis was the primary dose-limiting toxicity. The median times to neutrophil and platelet engraftment were 10 and 18 days, respectively. The 1-year cumulative incidence of graft-versus-host disease was 65% (95% confidence interval CI, 38-83). The nonrelapse mortality at 2 years was 17% (95% CI, 4-39). Cumulative incidence of relapse at 2 years was 35% (95% CI, 13-58). Two-year progression-free survival and overall survival were 48% and 50%. We conclude that combining IM-TMI with fludarabine-melphalan is feasible. We recommend 12 Gy of IM-TMI with fludarabine-melphalan for second SCT, although 9 Gy may be used for older or underweight patients.
Collapse
|
12
|
Ali N, Sharma AA, de Rezende ACP, Otegbeye F, Latif BM, Kerbauy MN, Cooper BW, Sanchez G, Metheny L, Bal SK, Sakuraba R, Tomlinson BK, Boughan KM, Kerbauy L, Malek E, Ribeiro AF, Gallogly M, Mansur D, Pereira G, Weltman E, Sekaly RP, de Lima M, Caimi PF, Hamerschlak N. Targeted Marrow Irradiation Intensification of Reduced Intensity Fludarabine/Busulfan Conditioning for Allogeneic Hematopoietic Stem Cell Transplantation. Transplant Cell Ther 2022; 28:370.e1-370.e10. [DOI: 10.1016/j.jtct.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/21/2022] [Accepted: 04/01/2022] [Indexed: 10/18/2022]
|
13
|
Salhotra A, Stein AS. Role of Radiation Based Conditioning Regimens in Patients With High-Risk AML Undergoing Allogenic Transplantation in Remission or Active Disease and Mechanisms of Post-Transplant Relapse. Front Oncol 2022; 12:802648. [PMID: 35242706 PMCID: PMC8886676 DOI: 10.3389/fonc.2022.802648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/21/2022] [Indexed: 11/25/2022] Open
Abstract
In the two decades there has been a consistent improvement in the clinical outcomes of patients diagnosed with acute leukemia undergoing allogenic stem cell transplantation. These improvements have been made possible by advancements in supportive care practices, more precise risk stratification of leukemia patients by genetic testing at diagnosis, accurate disease assessment by measurable residual disease (MRD) in pretransplant marrow and attempts to clear residual disease clones prior to transplant. Availability of targeted therapies, immunotherapies, and approval of novel drug combinations with BCL-2 inhibitors has also improved remission rates for patients who are undergoing transplant. For patients who are unable to achieve a morphologic or MRD- remission prior to transplant, the risk of relapse post-transplant remains high. Total body irradiation (TBI) based intensification of transplant conditioning may be able to overcome risk of increased relapse rate in this clinical setting by improving clearance of leukemic clones. However, in the past increased nonrelapse mortality (NRM) associated with escalation of conditioning intensity has neutralized any potential benefit of decreasing relapse rate in HCT patient resulting in no significant improvement in overall survival. In this review we discuss incorporation of newer radiation techniques such as total marrow irradiation (TMI) to safely deliver targeted doses of radiation at higher doses to improve outcomes of patients with active leukemia. We also discuss the mechanisms associated with leukemia relapse and treatment options available in post allo-HCT relapse setting despite use of intensified conditioning regimens.
Collapse
Affiliation(s)
- Amandeep Salhotra
- Department of Hematology/Hematopoietic Cell Transplant (HCT), City of Hope National Cancer Center, Duarte, CA, United States
| | - Anthony Selwyn Stein
- Department of Hematology/Hematopoietic Cell Transplant (HCT), City of Hope National Cancer Center, Duarte, CA, United States
| |
Collapse
|
14
|
Hoeben BAW, Wong JYC, Fog LS, Losert C, Filippi AR, Bentzen SM, Balduzzi A, Specht L. Total Body Irradiation in Haematopoietic Stem Cell Transplantation for Paediatric Acute Lymphoblastic Leukaemia: Review of the Literature and Future Directions. Front Pediatr 2021; 9:774348. [PMID: 34926349 PMCID: PMC8678472 DOI: 10.3389/fped.2021.774348] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 11/03/2021] [Indexed: 12/13/2022] Open
Abstract
Total body irradiation (TBI) has been a pivotal component of the conditioning regimen for allogeneic myeloablative haematopoietic stem cell transplantation (HSCT) in very-high-risk acute lymphoblastic leukaemia (ALL) for decades, especially in children and young adults. The myeloablative conditioning regimen has two aims: (1) to eradicate leukaemic cells, and (2) to prevent rejection of the graft through suppression of the recipient's immune system. Radiotherapy has the advantage of achieving an adequate dose effect in sanctuary sites and in areas with poor blood supply. However, radiotherapy is subject to radiobiological trade-offs between ALL cell destruction, immune and haematopoietic stem cell survival, and various adverse effects in normal tissue. To diminish toxicity, a shift from single-fraction to fractionated TBI has taken place. However, HSCT and TBI are still associated with multiple late sequelae, leaving room for improvement. This review discusses the past developments of TBI and considerations for dose, fractionation and dose-rate, as well as issues regarding TBI setup performance, limitations and possibilities for improvement. TBI is typically delivered using conventional irradiation techniques and centres have locally developed heterogeneous treatment methods and ways to achieve reduced doses in several organs. There are, however, limitations in options to shield organs at risk without compromising the anti-leukaemic and immunosuppressive effects of conventional TBI. Technological improvements in radiotherapy planning and delivery with highly conformal TBI or total marrow irradiation (TMI), and total marrow and lymphoid irradiation (TMLI) have opened the way to investigate the potential reduction of radiotherapy-related toxicities without jeopardising efficacy. The demonstration of the superiority of TBI compared with chemotherapy-only conditioning regimens for event-free and overall survival in the randomised For Omitting Radiation Under Majority age (FORUM) trial in children with high-risk ALL makes exploration of the optimal use of TBI delivery mandatory. Standardisation and comprehensive reporting of conventional TBI techniques as well as cooperation between radiotherapy centres may help to increase the ratio between treatment outcomes and toxicity, and future studies must determine potential added benefit of innovative conformal techniques to ultimately improve quality of life for paediatric ALL patients receiving TBI-conditioned HSCT.
Collapse
Affiliation(s)
- Bianca A. W. Hoeben
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, Netherlands
- Princess Máxima Center for Pediatric Oncology, Utrecht, Netherlands
| | - Jeffrey Y. C. Wong
- Department of Radiation Oncology, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, United States
| | - Lotte S. Fog
- Alfred Health Radiation Oncology, The Alfred Hospital, Melbourne, VIC, Australia
| | - Christoph Losert
- Department of Radiation Oncology, University Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Andrea R. Filippi
- Department of Radiation Oncology, Fondazione IRCCS Policlinico San Matteo and University of Pavia, Pavia, Italy
| | - Søren M. Bentzen
- Division of Biostatistics and Bioinformatics, Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Adriana Balduzzi
- Stem Cell Transplantation Unit, Clinica Paediatrica Università degli Studi di Milano Bicocca, Monza, Italy
| | - Lena Specht
- Department of Oncology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
15
|
Stanley D, McConnell K, Iqbal Z, Everett A, Dodson J, Keene K, McDonald A. Dosimetric Evaluation Between the Conventional Volumetrically Modulated Arc Therapy (VMAT) Total Body Irradiation (TBI) and the Novel Simultaneous Integrated Total Marrow Approach (SIMBa) VMAT TBI. Cureus 2021; 13:e15646. [PMID: 34306856 PMCID: PMC8279336 DOI: 10.7759/cureus.15646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2021] [Indexed: 11/05/2022] Open
Abstract
Purpose The purpose of this study was to assess the treatment planning feasibility of volumetrically modulated arc therapy total body irradiation (VMAT TBI) using a simultaneous integrated marrow and body approach (SIMBa). We also aimed to compare SIMBa TBI with the more conventional VMAT TBI approach using the entire body as the target. The goal of using an integrated approach like SIMBa is to balance the known clinical benefit of TBI with the toxicity decrease of Total Marrow Irradiation (TMI) using two prescription volumes. In anticipation of a clinical trial to investigate a novel conditioning regimen that uses SIMBa, our institution retrospectively analyzed the dosimetric differences between 20 clinical VMAT TBI which were re-planned using SIMBa. Methods Twenty patients who previously received conventional VMAT TBI at our institution with a dose of 12 Gy in six fractions were re-planned using SIMBa with a planning aim of delivering a uniform dose of 12 Gy to at least 90% of the PTV_BodyEval. The planning aims of SIMBa were to deliver a uniform dose of 12 Gy to at least 90% of the PTV_Marrow and 8 Gy to at least 90% of the PTV_TotalBody while limiting the mean lung dose to less than 8 Gy. The plans were normalized so that 100% of the PTV_Marrow received at least 90% of the dose with the PTV_TotalBody optimized to stay as close to 100% at 90% as possible. Results All 20 patient plans achieved 12 Gy/8 Gy to at least 90% of the PTV_Marrow and PTV_TotalBody, respectively, with max doses of <16 Gy (130%). As compared with the delivered TBI, the following reductions in mean dose were notable: small bowel 21.3±4.2%, lung 16.3±7.9%, heart 25.3±8.6%, and kidney 16.4±6.2%. Coverage of the sanctuary sites was maintained despite a significant reduction to sensitive organs at risk (OARs). Conclusion This study supports that VMAT TBI treatment planning with SIMBa is feasible. In this sample, SIMBa provided dosimetrically similar doses to marrow and sanctuary site doses as TBI while achieving lower doses to OARs. A clinical trial is needed to investigate the clinical implications of VMAT TBI with SIMBa.
Collapse
Affiliation(s)
- Dennis Stanley
- Radiation Oncology, The University of Alabama at Birmingham, Birmingham, USA
| | - Kristen McConnell
- Radiation Oncology/Medical Physics, The University of Alabama at Birmingham, Birmingham, USA
| | - Zohaib Iqbal
- Radiation Oncology/Medical Physics, The University of Alabama at Birmingham, Birmingham, USA
| | - Ashlyn Everett
- Radiation Oncology, The University of Alabama at Birmingham, Birmingham, USA
| | - Jonathan Dodson
- Radiation Oncology, The University of Alabama at Birmingham, Birmingham, USA
| | - Kimberly Keene
- Radiation Oncology, The University of Alabama at Birmingham, Birmingham, USA
| | - Andrew McDonald
- Radiation Oncology, The University of Alabama at Birmingham, Birmingham, USA
| |
Collapse
|
16
|
Kim S, Hosoya K, Fukayama N, Deguchi T, Okumura M. Safety and efficacy of a nonmyeloablative pretransplant conditioning regimen using total lymphoid irradiation with volumetric modulated arc therapy in healthy dogs: A pilot study. Vet Med Sci 2021; 7:1120-1130. [PMID: 33713574 PMCID: PMC8294366 DOI: 10.1002/vms3.470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 01/15/2021] [Accepted: 02/22/2021] [Indexed: 12/22/2022] Open
Abstract
Allogeneic hematopoietic cell transplantation (HCT) has been an effective treatment for human patients with haematological malignancies (Baron & Storb, 2006; Bair et al., 2020; Copelan et al., 2019). However, the optimal pretransplant conditioning treatment is unclear in canine allogeneic HCT. This pilot study aimed to evaluate the safety and efficacy of total lymphoid irradiation (TLI) with volumetric modulated arc therapy (VMAT) for a nonmyeloablative HCT conditioning. Six healthy dogs were treated with 8 or 12 Gy TLI using VMAT. Haematological and physical changes were recorded over 8 weeks. To assess the effect of peripheral lymphocyte condition, lymphocyte subset and proliferative ability were examined. At the end of the experiment, necropsy was performed. All dogs showed mild‐to‐moderate neutropenia and thrombocytopenia, and these haematological changes resolved spontaneously. One dog treated with 8 Gy TLI developed transient cutaneous infection. No major complication was seen in the other seven dogs. Myelocytes and erythroblast cytopenia of bone marrow were detected in two dogs treated with 12 Gy TLI. This study is the first report of TLI using VMAT in dogs, and results suggest that this regimen is a feasible nonmyeloablative treatment.
Collapse
Affiliation(s)
- Sangho Kim
- Laboratory of Veterinary Surgery, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Kenji Hosoya
- Laboratory of Advanced Veterinary Medicine, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Natsuki Fukayama
- Laboratory of Advanced Veterinary Medicine, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Tatsuya Deguchi
- Graduate School of Veterinary Medicine, Veterinary Teaching Hospital, Hokkaido University, Sapporo, Japan
| | - Masahiro Okumura
- Laboratory of Veterinary Surgery, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| |
Collapse
|
17
|
Hoeben BA, Pazos M, Albert MH, Seravalli E, Bosman ME, Losert C, Boterberg T, Manapov F, Ospovat I, Milla SM, Abakay CD, Engellau J, Kos G, Supiot S, Bierings M, Janssens GO. Towards homogenization of total body irradiation practices in pediatric patients across SIOPE affiliated centers. A survey by the SIOPE radiation oncology working group. Radiother Oncol 2021; 155:113-119. [DOI: 10.1016/j.radonc.2020.10.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/07/2020] [Accepted: 10/21/2020] [Indexed: 02/06/2023]
|
18
|
[Containing total marrow irradiation conditioning regimen for patients with leukemia undergoing hematopoietic stem cell transplantation]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2021; 41:525-528. [PMID: 32654472 PMCID: PMC7378288 DOI: 10.3760/cma.j.issn.0253-2727.2020.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
19
|
Akino Y, Maruoka S, Yano K, Abe H, Isohashi F, Seo Y, Tamari K, Hirata T, Kawakami M, Nakae Y, Tanaka Y, Ogawa K. Commissioning of total body irradiation using plastic bead bags. JOURNAL OF RADIATION RESEARCH 2020; 61:959-968. [PMID: 32876686 PMCID: PMC7674696 DOI: 10.1093/jrr/rraa072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 04/11/2020] [Indexed: 06/11/2023]
Abstract
The goal of total body irradiation (TBI) is to deliver a dose to the whole body with uniformity within ±10%. The purpose of this study was to establish the technique of TBI using plastic bead bags. A lifting TBI bed, Model ORP-TBI-MN, was used. The space between the patient's body and the acrylic walls of the bed was filled with polyacetal bead bags. Patients were irradiated by a 10 MV photon beam with a source to mid-plane distance of 400 cm. The monitor unit (MU) was calculated by dose-per-MU, tissue-phantom-ratio and a spoiler factor measured in solid water using an ionization chamber. The phantom-scatter correction factor, off-center ratio and the effective density of the beads were also measured. Diode detectors were used for in vivo dosimetry (IVD). The effective density of the beads was 0.90 ± 0.09. The point doses calculated in an I'mRT phantom with and without heterogeneity material showed good agreement, with measurements within 3%. An end-to-end test was performed using a RANDO phantom. The mean ± SD (range) of the differences between the calculated and IVD-measured mid-plane doses was 1.1 ± 4.8% (-5.9 to 5.0%). The differences between the IVD-measured doses and the doses calculated with Acuros XB of the Eclipse treatment planning system (TPS) were within 5%. For two patients treated with this method, the differences between the calculated and IVD-measured doses were within ±6% when excluding the chest region. We have established the technique of TBI using plastic bead bags. The TPS may be useful to roughly estimate patient dose.
Collapse
Affiliation(s)
- Yuichi Akino
- Corresponding author. Oncology Center, Osaka University Hospital, 2-2 (D10), Yamadaoka, Suita, Osaka, 565-0871, Japan. Tel: (+81) 6-6879-3482; Fax: (+81) 6-6879-3489;
| | | | | | - Hiroshi Abe
- Nippon Life Hospital, Nishi-ku, Osaka 550-0006, Japan
| | - Fumiaki Isohashi
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yuji Seo
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Keisuke Tamari
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Takero Hirata
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | | | - Yoshiki Nakae
- Nippon Life Hospital, Nishi-ku, Osaka 550-0006, Japan
| | - Yoshihiro Tanaka
- Department of Radiation Therapy, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto 605-0981, Japan
| | - Kazuhiko Ogawa
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| |
Collapse
|
20
|
Konishi T, Ogawa H, Najima Y, Hashimoto S, Wada A, Adachi H, Konuma R, Kishida Y, Nagata A, Yamada Y, Kaito S, Mukae J, Marumo A, Noguchi Y, Toya T, Igarashi A, Kobayashi T, Ohashi K, Doki N, Karasawa K. Safety of total body irradiation using intensity-modulated radiation therapy by helical tomotherapy in allogeneic hematopoietic stem cell transplantation: a prospective pilot study. JOURNAL OF RADIATION RESEARCH 2020; 61:969-976. [PMID: 32888029 PMCID: PMC7674702 DOI: 10.1093/jrr/rraa078] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/05/2020] [Accepted: 08/20/2020] [Indexed: 05/28/2023]
Abstract
Total body irradiation using intensity-modulated radiation therapy total body irradiation (IMRT-TBI) by helical tomotherapy in allogeneic hematopoietic stem cell transplantation (allo-HSCT) allows for precise evaluation and adjustment of radiation dosage. We conducted a single-center pilot study to evaluate the safety of IMRT-TBI for allo-HSCT recipients. Patients with hematological malignancies in remission who were scheduled for allo-HSCT with TBI-based myeloablative conditioning were eligible. The primary endpoint was the incidence of adverse events (AEs). Secondary endpoints were engraftment rate, overall survival, relapse rate, non-relapse mortality, and the incidence of acute and chronic graft-versus-host disease (aGVHD and cGVHD, respectively). Between July 2018 and November 2018, ten patients were recruited with a median observation duration of 571 days after allo-HSCT (range, 496-614). D80% for planning target volume (PTV) in all patients was 12.01 Gy. Average D80% values for lungs, kidneys and lenses (right/left) were 7.50, 9.03 and 4.41/4.03 Gy, respectively. Any early AEs (within 100 days of allo-HSCT) were reported in all patients. Eight patients experienced oral mucositis and gastrointestinal symptoms. One patient experienced Bearman criteria grade 3 regimen-related toxicity (kidney and liver). All cases achieved neutrophil engraftment. There was no grade III-IV aGVHD or late AE. One patient died of sinusoidal obstruction syndrome 67 days after allo-HSCT. The remaining nine patients were alive and disease-free at final follow-up. Thus, IMRT-TBI was well tolerated in terms of early AEs in adult patients who underwent allo-HSCT; this warrants further study with longer observation times to monitor late AEs and efficacy.
Collapse
Affiliation(s)
| | | | - Yuho Najima
- Corresponding author. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Hon-Komagome, Bunkyo-ku, Tokyo, Japan, 1138677, Phone: +81-3-3823-2101, Fax: +81-3-3823-5433,
| | - Shinpei Hashimoto
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Atsushi Wada
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Hiroto Adachi
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Ryosuke Konuma
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Yuya Kishida
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Akihito Nagata
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Yuta Yamada
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Satoshi Kaito
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Junichi Mukae
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Atsushi Marumo
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Yuma Noguchi
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Takashi Toya
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Aiko Igarashi
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Takeshi Kobayashi
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Kazuteru Ohashi
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Noriko Doki
- Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| | - Katsuyuki Karasawa
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital
| |
Collapse
|
21
|
Total marrow and total lymphoid irradiation in bone marrow transplantation for acute leukaemia. Lancet Oncol 2020; 21:e477-e487. [PMID: 33002443 DOI: 10.1016/s1470-2045(20)30342-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/20/2020] [Accepted: 05/28/2020] [Indexed: 02/06/2023]
Abstract
The use of total body irradiation as part of conditioning regimens for acute leukaemia is progressively declining because of concerns of late toxic effects and the introduction of radiation-free regimens. Total marrow irradiation and total marrow and lymphoid irradiation represent more targeted forms of radiotherapy compared with total body irradiation that have the potential to decrease toxicity and escalate the dose to the bone marrow for high-risk patients. We review the technological basis and the clinical development of total marrow irradiation and total marrow and lymphoid irradiation, highlighting both the possible advantages as well as the current roadblocks for widespread implementation among transplantation units. The exact role of total marrow irradiation or total marrow and lymphoid irradiation in new conditioning regimens seems dependent on its technological implementation, aiming to make the whole procedure less time consuming, more streamlined, and easier to integrate into the clinical workflow. We also foresee a role for computer-assisted planning, as a way to improve planning and delivery and to incorporate total marrow irradiation and total marrow and lymphoid irradiation in multi-centric phase 2-3 trials.
Collapse
|
22
|
Hara JH, Ahn KH, Aydogan B, Koshy M. Local Recurrence Following Total Marrow Radiation: Implications for Clinical Target Delineation. Cureus 2020; 12:e10592. [PMID: 33110728 PMCID: PMC7581219 DOI: 10.7759/cureus.10592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Total marrow radiation is an emerging treatment modality used in patients undergoing stem cell transplantation. We present a rare case of a patient undergoing total marrow irradiation with concurrent ablative stem cell transplantation with local failures in two out-of-field areas that were not included in the clinical target volume A 31-year-old female patient initially presented with abdominal pain secondary to chronic myelogenous leukemia. She underwent dasatinib treatment for years, but subsequently developed recurrence and underwent consolidation systemic chemotherapy followed by allogeneic stem cell transplantation with adjuvant total marrow irradiation. Several months later, she noticed increased left jaw swelling and dysphagia with associated right ankle swelling. Biopsy of the right ankle and left mandible were consistent with recurrent myeloid sarcoma. This case report suggests that inclusion of the mandible and lower extremities may be necessary when performing total marrow radiation.
Collapse
Affiliation(s)
- Jared H Hara
- Department of Radiation and Cellular Oncology, University of Chicago Medical Center, Chicago, USA.,Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, USA
| | - Kang-Hyun Ahn
- Department of Radiation and Cellular Oncology, University of Chicago Medical Center, Chicago, USA.,Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, USA
| | - Bulent Aydogan
- Department of Radiation and Cellular Oncology, University of Chicago Medical Center, Chicago, USA.,Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, USA
| | - Matthew Koshy
- Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, USA.,Department of Radiation and Cellular Oncology, University of Chicago Medical Center, Chicago, USA
| |
Collapse
|
23
|
Jang JK, Reilly M, Yaghmour G, Rashid F, Ballas LK. Acute Respiratory Events and Dosimetry of Total Body Irradiation Patients Using In Vivo Lung Dose Monitoring and Custom Lung Block Adaptation. Pract Radiat Oncol 2020; 10:e397-e405. [DOI: 10.1016/j.prro.2020.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/26/2020] [Accepted: 03/14/2020] [Indexed: 01/01/2023]
|
24
|
Warrell GR, Colussi VC, Swanson WL, Caimi PF, Mansur DB, de Lima MJG, Pereira GC. Organ sparing of linac-based targeted marrow irradiation over total body irradiation. J Appl Clin Med Phys 2019; 20:69-79. [PMID: 31605462 PMCID: PMC6839384 DOI: 10.1002/acm2.12742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/09/2019] [Accepted: 09/11/2019] [Indexed: 12/25/2022] Open
Abstract
PURPOSE Targeted marrow irradiation (TMI) is an alternative conditioning regimen to total body irradiation (TBI) before bone marrow transplantation in hematologic malignancies. Intensity-modulation methods of external beam radiation therapy are intended to permit significant organ sparing while maintaining adequate target coverage, improving the therapeutic ratio. This study directly compares the dose distributions to targets and organs at risk from TMI and TBI, both modalities conducted by general-use medical linacs at our institution. METHODS TMI treatments were planned for 10 patients using multi-isocentric feathered volumetric arc therapy (VMAT) plans, delivered by 6 MV photon beams of Elekta Synergy linacs. The computed tomography (CT) datasets used to obtain these plans were also used to generate dose distributions of TBI treatments given in the AP/PA extended-field method. We compared dose distributions normalized to the same prescription for both plan types. The generalized equivalent uniform dose (gEUD) of Niemierko for organs and target volumes was used to quantify effective whole structure dose and dose savings. RESULTS For the clinical target volume (CTV), no significant differences were found in mean dose or gEUD, although the radical dose homogeneity index (minimum dose divided by maximum dose) was 31.7% lower (P = 0.002) and the standard deviation of dose was 28.0% greater (P = 0.027) in the TMI plans than in the TBI plans. For the TMI plans, gEUD to the lungs, brain, kidneys, and liver was significantly lower (P < 0.001) by 47.8%, 33.3%, 55.4%, and 51.0%, respectively. CONCLUSION TMI is capable of maintaining CTV coverage as compared to that achieved in TBI, while significantly sparing organs at risk. Improvement on sparing organs at risk permits a higher prescribed dose to the target or the maximum number of times marrow conditioning may be delivered to a patient while maintaining similar typical tissue complication rates.
Collapse
Affiliation(s)
| | | | - Wayne L. Swanson
- Department of Radiation OncologyUniversity HospitalsClevelandOHUSA
| | - Paolo F. Caimi
- Department of Medicine–Hematology and OncologyUniversity HospitalsClevelandOHUSA
| | - David B. Mansur
- Department of Radiation OncologyUniversity HospitalsClevelandOHUSA
| | - Marcos J. G. de Lima
- Department of Medicine–Hematology and OncologyUniversity HospitalsClevelandOHUSA
| | | |
Collapse
|
25
|
Potdar RR, Gupta S, Giebel S, Savani BN, Varadi G, Nagler A, Blamek S. Current Status and Perspectives of Irradiation-Based Conditioning Regimens for Patients with Acute Leukemia Undergoing Hematopoietic Stem Cell Transplantation. Clin Hematol Int 2019; 1:19-27. [PMID: 34595407 PMCID: PMC8432382 DOI: 10.2991/chi.d.190218.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 02/18/2019] [Indexed: 11/01/2022] Open
Abstract
Acute myeloid leukemia and acute lymphoblastic leukemia are the most common indications for allogeneic hematopoietic stem cell transplantation. Total body irradiation (TBI) is an important part of conditioning regimens. TBI-based regimens offer advantages in sanctuary sites but are associated with significant risks of early and late side effects, including pulmonary toxicity, growth retardation, and second malignancy. TBI is also associated with technical problems, such as dose heterogeneity. With evolving techniques in radiation oncology, it is possible to focus the dose to the entire skeleton while sparing the rest of the body. This technique is called total marrow irradiation (TMI). TMI is able to deliver the same or higher doses to bone marrow while reducing toxicity. With the success of TMI, we are moving toward ultra-personalized conditioning. We review the clinical role of the irradiation-based regimens currently in clinical use, emphasizing on their strengths and limitations. Novel technologies with targeted irradiation accompanied by the modern imaging techniques and increased knowledge of the disease process can help us achieve our goal of maximum response with minimum toxicity.
Collapse
Affiliation(s)
- Rashmika R Potdar
- Division of Hematology and Oncology, Department of Internal Medicine, Einstein Medical Center, Philadelphia, PA, USA
| | - Sorab Gupta
- Division of Hematology and Oncology, Department of Internal Medicine, Einstein Medical Center, Philadelphia, PA, USA
| | - Sebastian Giebel
- Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie Institute-Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Bipin N Savani
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center & Veterans Affairs Medical Center, Nashville, TN, USA
| | - Gabor Varadi
- Division of Hematology and Oncology, Department of Internal Medicine, Einstein Medical Center, Philadelphia, PA, USA
| | - Arnon Nagler
- Hematology and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel
| | - Slawomir Blamek
- Department of Radiotherapy, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| |
Collapse
|
26
|
Wong JY, Filippi AR, Dabaja BS, Yahalom J, Specht L. Total Body Irradiation: Guidelines from the International Lymphoma Radiation Oncology Group (ILROG). Int J Radiat Oncol Biol Phys 2018; 101:521-529. [DOI: 10.1016/j.ijrobp.2018.04.071] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/09/2018] [Accepted: 04/23/2018] [Indexed: 01/04/2023]
|
27
|
Paix A, Antoni D, Waissi W, Ledoux MP, Bilger K, Fornecker L, Noel G. Total body irradiation in allogeneic bone marrow transplantation conditioning regimens: A review. Crit Rev Oncol Hematol 2018; 123:138-148. [PMID: 29482775 DOI: 10.1016/j.critrevonc.2018.01.011] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/28/2017] [Accepted: 01/24/2018] [Indexed: 12/30/2022] Open
Abstract
Hematologic malignancies may require, at one point during their treatment, allogeneic bone marrow transplantation. Total body irradiation combined with chemotherapy or radiomimetic used in allogeneic bone marrow transplantation is known to be very toxic. Total body irradiation (TBI) induces immunosuppression to prevent the rejection of donor marrow. TBI is also used to eradicate malignant cells and is in sanctuary organs that are not reached by chemotherapy drugs. TBI has evolved since its introduction in the late fifties, but acute and late toxicities remain. Helical tomotherapy, which is widely used for some solid tumors, is a path for the improvement of outcomes and toxicities in TBI because of its sparing capacities. In this article, we first review the practical aspects of TBI with patient positioning, radiobiological considerations and total dose and fractionation prescriptions. Second, we review the use of intensity modulated radiation therapy in bone marrow transplantation with a focus on helical tomotherapy TBI, helical tomotherapy total marrow irradiation (TMI) and total marrow and lymphoid irradiation (TMLI) and their dosimetric and clinical outcomes. Finally, we review the perspective of dose escalation and the extension to older patients and patients with comorbidity who do not benefit from a standard bone marrow transplantation conditioning regimen.
Collapse
Affiliation(s)
- Adrien Paix
- Radiation Oncology Department, Centre Paul Strauss 3 rue de la Porte de l'hôpital, 67065, Strasbourg Cedex, France
| | - Delphine Antoni
- Radiation Oncology Department, Centre Paul Strauss 3 rue de la Porte de l'hôpital, 67065, Strasbourg Cedex, France; Radiobiology Laboratory, EA3430, Strasbourg University, 3 rue de la Porte de l'hôpital, 67000, Strasbourg, France
| | - Waisse Waissi
- Radiation Oncology Department, Centre Paul Strauss 3 rue de la Porte de l'hôpital, 67065, Strasbourg Cedex, France; Radiobiology Laboratory, EA3430, Strasbourg University, 3 rue de la Porte de l'hôpital, 67000, Strasbourg, France
| | - Marie-Pierre Ledoux
- Hematology Department, CHU Hautepierre, 1, rue Molière, 67000, Strasbourg, France
| | - Karin Bilger
- Hematology Department, CHU Hautepierre, 1, rue Molière, 67000, Strasbourg, France
| | - Luc Fornecker
- Hematology Department, CHU Hautepierre, 1, rue Molière, 67000, Strasbourg, France
| | - Georges Noel
- Radiation Oncology Department, Centre Paul Strauss 3 rue de la Porte de l'hôpital, 67065, Strasbourg Cedex, France; Radiobiology Laboratory, EA3430, Strasbourg University, 3 rue de la Porte de l'hôpital, 67000, Strasbourg, France.
| |
Collapse
|
28
|
Haploidentical hematopoietic SCT using helical tomotherapy for total-body irradiation and targeted dose boost in patients with high-risk/refractory acute lymphoblastic leukemia. Bone Marrow Transplant 2018; 53:438-448. [PMID: 29330392 DOI: 10.1038/s41409-017-0049-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 09/12/2017] [Accepted: 11/17/2017] [Indexed: 11/08/2022]
Abstract
A novel conditioning regimen using helical tomotherapy (HT) was developed to deliver 10 Gy for total body irradiation (TBI) and simultaneously augment dose to 12 Gy for targeted dose boost to total marrow, central nervous system leukemia, and extramedullary disease sites in patients with high-risk or relapsed/refractory acute lymphoblastic leukemia (ALL) receiving haploidentical allogeneic hematopoietic stem cell transplantation (allo-HSCT). Fourteen patients were included, eight of these patients were in first complete remission (CR1), one was in CR2, one had a partial response and four patients had refractory disease at transplantation. The median delivered average dose was 11.395 Gy (range 10.06-12.17). The median planning target volume D95 was 8.2 Gy (range 7.52-9.01). The median delivered dose to skeleton bone with active bone marrow sites was 12.685 Gy (range 11.12-13.52). The results of this trial suggest that using HT TBI confers satisfactory immunosuppression and excellent eradication of malignant cells in patients with high-risk ALL undergoing allo-HSCT, especially in those with refractory ALL. After a median follow-up of 14.6 months (range 4-28), four patients experienced non-relapse mortality, ten patients are alive in durable CR including remission of extramedullary leukemic infiltration. One-year overall survival and disease-free survival rates post-transplantation were both 70.7%.
Collapse
|
29
|
Patel P, Oh AL, Koshy M, Sweiss K, Saraf SL, Quigley JG, Khan I, Mahmud N, Hacker E, Ozer H, Peace DJ, Weichselbaum RR, Aydogan B, Rondelli D. A phase 1 trial of autologous stem cell transplantation conditioned with melphalan 200 mg/m2and total marrow irradiation (TMI) in patients with relapsed/refractory multiple myeloma. Leuk Lymphoma 2017; 59:1666-1671. [DOI: 10.1080/10428194.2017.1390231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pritesh Patel
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - Annie L. Oh
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
| | - Matthew Koshy
- University of Illinois Cancer Center, Chicago, IL, USA
- Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- Department of Cellular and Radiation Oncology, University of Chicago, Chicago, IL, USA
| | - Karen Sweiss
- University of Illinois Cancer Center, Chicago, IL, USA
- Department of Pharmacy Practice, University of Illinois at Chicago, Chicago, IL, USA
| | - Santosh L. Saraf
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - John G. Quigley
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - Irum Khan
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - Nadim Mahmud
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - Eileen Hacker
- University of Illinois Cancer Center, Chicago, IL, USA
- Department of Biobehavioural Health Science, College of Nursing, University of Illinois at Chicago, Chicago, IL, USA
| | - Howard Ozer
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - David J. Peace
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| | - Ralph R. Weichselbaum
- Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- Department of Cellular and Radiation Oncology, University of Chicago, Chicago, IL, USA
| | - Bulent Aydogan
- Department of Radiation Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- Department of Cellular and Radiation Oncology, University of Chicago, Chicago, IL, USA
| | - Damiano Rondelli
- Division of Hematology/Oncology, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
| |
Collapse
|
30
|
Hui S, Brunstein C, Takahashi Y, DeFor T, Holtan SG, Bachanova V, Wilke C, Zuro D, Ustun C, Weisdorf D, Dusenbery K, Verneris MR. Dose Escalation of Total Marrow Irradiation in High-Risk Patients Undergoing Allogeneic Hematopoietic Stem Cell Transplantation. Biol Blood Marrow Transplant 2017; 23:1110-1116. [PMID: 28396164 PMCID: PMC5531195 DOI: 10.1016/j.bbmt.2017.04.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/04/2017] [Indexed: 11/30/2022]
Abstract
Patients with refractory leukemia or minimal residual disease (MRD) at transplantation are at increased risk of relapse. Augmentation of irradiation, especially to sites of disease (ie, bone marrow) is one potential strategy for overcoming this risk. We studied the feasibility of radiation dose escalation in high-risk patients using total marrow irradiation (TMI) in a phase I dose-escalation trial. Four pediatric and 8 adult patients received conditioning with cyclophosphamide and fludarabine in conjunction with image-guided radiation to the bone marrow at 15 Gy and 18 Gy (in 3-Gy fractions), while maintaining the total body irradiation (TBI) dose to the vital organs (lungs, hearts, eyes, liver, and kidneys) at <13.2 Gy. The biologically effective dose of TMI delivered to the bone marrow was increased by 62% at 15 Gy and by 96% at 18 Gy compared with standard TBI. Although excessive dose-limiting toxicity, defined by graft failure or excessive specific organ toxicity, was not encountered, 3 of 6 patients experienced treatment-related mortality at 18 Gy. Thus, we halted enrollment at this dose level and treated an additional 4 patients at 15 Gy. The 1- year overall survival was 42% (95% confidence interval [CI], 15%-67%) and disease-free survival was 22% (95% CI, 4%-49%). The rate of relapse was 36% (95% CI, 10%-62%), and nonrelapse mortality was 42% (95% CI, 14%-70%). This study shows that TMI dose escalation to 15 Gy is feasible with acceptable toxicity in pediatric and adult patients with high-risk leukemia undergoing umbilical cord blood and sibling donor transplantation.
Collapse
Affiliation(s)
- Susanta Hui
- Department of Therapeutic Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Claudio Brunstein
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Yutaka Takahashi
- Department of Therapeutic Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Todd DeFor
- Blood and Marrow Transplant Program, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Shernan G Holtan
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Veronika Bachanova
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Christopher Wilke
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Darren Zuro
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Celalettin Ustun
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Daniel Weisdorf
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Kathryn Dusenbery
- Department of Therapeutic Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Michael R Verneris
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota.
| |
Collapse
|
31
|
Total Marrow and Lymphoid Irradiation to Rescue Refractory Leukemia. Biol Blood Marrow Transplant 2017; 23:536-537. [DOI: 10.1016/j.bbmt.2017.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 02/08/2017] [Indexed: 12/16/2022]
|
32
|
Stein A, Palmer J, Tsai NC, Al Malki MM, Aldoss I, Ali H, Aribi A, Farol L, Karanes C, Khaled S, Liu A, O'Donnell M, Parker P, Pawlowska A, Pullarkat V, Radany E, Rosenthal J, Sahebi F, Salhotra A, Sanchez JF, Schultheiss T, Spielberger R, Thomas SH, Snyder D, Nakamura R, Marcucci G, Forman SJ, Wong J. Phase I Trial of Total Marrow and Lymphoid Irradiation Transplantation Conditioning in Patients with Relapsed/Refractory Acute Leukemia. Biol Blood Marrow Transplant 2017; 23:618-624. [PMID: 28087456 DOI: 10.1016/j.bbmt.2017.01.067] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/07/2017] [Indexed: 11/27/2022]
Abstract
Current conditioning regimens provide insufficient disease control in relapsed/refractory acute leukemia patients undergoing hematopoietic stem cell transplantation (HSCT) with active disease. Intensification of chemotherapy and/or total body irradiation (TBI) is not feasible because of excessive toxicity. Total marrow and lymphoid irradiation (TMLI) allows for precise delivery and increased intensity treatment via sculpting radiation to sites with high disease burden or high risk for disease involvement, while sparing normal tissue. We conducted a phase I trial in 51 patients (age range, 16 to 57 years) with relapsed/refractory acute leukemia undergoing HSCT (matched related, matched unrelated, or 1-allele mismatched unrelated) with active disease, combining escalating doses of TMLI (range, 1200 to 2000 cGy) with cyclophosphamide (CY) and etoposide (VP16). The maximum tolerated dose was declared at 2000 cGy, as TMLI simulation studies indicated that >2000 cGy might deliver doses toxic for normal organs at or exceeding those delivered by standard TBI. The post-transplantation nonrelapse mortality (NRM) rate was only 3.9% (95% confidence interval [CI], .7 to 12.0) at day +100 and 8.1% (95% CI, 2.5 to 18.0) at 1 year. The cumulative incidence of grades II to IV acute graft-versus-host disease (GVHD) was 43.1% (95% CI, 29.2 to 56.3) and for grade III and IV, it was 13.7% (95% CI, 6.9 to 27.3). The day +30 complete remission rate for all patients was 88% and was 100% for those treated at 2000 cGy. The overall 1-year survival was 55.5% (95% CI, 40.7 to 68.1). The TMLI/CY/VP16 conditioning regimen is well tolerated at TMLI doses up to 2000 cGy with a low 100-day and 1-year NRM rate and no increased risk of GVHD with higher doses of radiation.
Collapse
Affiliation(s)
- Anthony Stein
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California.
| | | | - Ni-Chun Tsai
- Department of Biostatistics, City of Hope, Duarte, California
| | - Monzr M Al Malki
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Ibrahim Aldoss
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Haris Ali
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Ahmed Aribi
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Len Farol
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Southern California Kaiser Permanente Bone Marrow Transplant Program, Los Angeles, California
| | - Chatchada Karanes
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Samer Khaled
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - An Liu
- Department of Radiation Oncology, City of Hope, Duarte, California
| | - Margaret O'Donnell
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Pablo Parker
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Anna Pawlowska
- Department of Pediatrics, City of Hope, Duarte, California
| | - Vinod Pullarkat
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Eric Radany
- Department of Radiation Oncology, City of Hope, Duarte, California
| | | | - Firoozeh Sahebi
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Southern California Kaiser Permanente Bone Marrow Transplant Program, Los Angeles, California
| | - Amandeep Salhotra
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - James F Sanchez
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California
| | - Tim Schultheiss
- Department of Radiation Oncology, City of Hope, Duarte, California
| | - Ricardo Spielberger
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Southern California Kaiser Permanente Bone Marrow Transplant Program, Los Angeles, California
| | - Sandra H Thomas
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California
| | - David Snyder
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Ryotaro Nakamura
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Guido Marcucci
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California; Gehr Family Center for Leukemia Research, City of Hope, Duarte, California
| | - Stephen J Forman
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, California
| | - Jeffrey Wong
- Department of Radiation Oncology, City of Hope, Duarte, California
| |
Collapse
|