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Cho SH, Lee NK, Kang KW, Yang KS. Radiation Therapy Dose for Limited-Stage Extranodal Marginal Zone Lymphomas of the Mucosa-Associated Lymphoid Tissues of the Stomach: A Meta-Analysis: RT Dose for Gastric EMZL. Pract Radiat Oncol 2024:S1879-8500(24)00268-6. [PMID: 39393769 DOI: 10.1016/j.prro.2024.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 08/30/2024] [Accepted: 09/19/2024] [Indexed: 10/13/2024]
Abstract
PURPOSE To compare the outcomes of two standard radiation therapy (RT) doses for limited-stage gastric extranodal marginal zone lymphoma (EMZL) of the mucosa-associated lymphoid tissues. METHODS AND MATERIALS A database search was performed to identify articles published from database inception to August 31, 2023. Based on the current standard dose of 24.0-30.0 Gy, doses of approximately 30.0 Gy were classified as standard dose (SD), while those of approximately 24.0 Gy were classified as low dose (LD). Pooled estimates of the complete remission (CR) and local recurrence (LR) rates were calculated and compared. RESULTS Data from 1,072 patients across 30 included studies were analyzed. SD was used in 28 studies (n = 987), while LD was used in six studies (n = 85), and both regimens were used in four studies. In all included studies, the CR rate was 0.96 (95% confidence interval [CI], 0.94-0.97), and the LR rate was 0.05 (95% CI, 0.04-0.06), showing no significant between-study heterogeneity (τ2 = 0 and I2 = 0% for both; P = 0.8447 and 0.9998, respectively). SD and LD resulted in no significant differences in the CR rates (0.96 [95% CI, 0.94-0.97] vs. 0.96 [95% CI, 0.89-0.99]; P = 0.9174) or LR rates (0.05 [95% CI, 0.04-0.06] vs. 0.03 [95% CI, 0.01-0.10]; P = 0.5495). CONCLUSION Both the SD and LD groups achieved excellent CR and LR rates. These results indicate that the RT dose for limited-stage gastric EMZL may be safely de-escalated without compromising local tumor control.
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Affiliation(s)
- Song Heui Cho
- Department of Radiation Oncology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Nam Kwon Lee
- Department of Radiation Oncology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea.
| | - Ka-Won Kang
- Division of Hematology and Oncology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea.
| | - Kyung-Sook Yang
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea.
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Roers J, Rolf D, Baehr A, Pöttgen C, Stickan-Verfürth M, Siats J, Hering DA, Moustakis C, Grohmann M, Oertel M, Haverkamp U, Stuschke M, Timmermann B, Eich HT, Reinartz G. Impact of Modern Low Dose Involved Site Radiation Therapy on Normal Tissue Toxicity in Cervicothoracic Non-Hodgkin Lymphomas: A Biophysical Study. Cancers (Basel) 2023; 15:5712. [PMID: 38136257 PMCID: PMC10741516 DOI: 10.3390/cancers15245712] [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: 10/23/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
This biophysical study aimed to determine fitting parameters for the Lyman-Kutcher-Burman (LKB) dose-response model for normal tissue complication probability (NTCP) calculations of acute side effects and to investigate the impact of reduced radiation doses on the probability of their occurrence in supradiaphragmatic non-Hodgkin lymphoma (NHL) irradiation. A cohort of 114 patients with NHL in the cervicothoracic region, treated between 2015 and 2021 at the University Hospitals of Münster, Hamburg, and Essen, with involved site radiation therapy (ISRT), were included. Among them, 68 patients with aggressive NHL (a-NHL) received consolidative radiation therapy with 24-54 Gy following (R-)CHOP chemotherapy. Additionally, 46 patients with indolent NHL (i-NHL) underwent radiotherapy with 22.5-45.0 Gy. Two treatment plans were prospectively created for each patient (a-NHL: 30.0/40.0 Gy; i-NHL: 24.0/30.0 Gy). NTCP were then calculated using the optimized LKB model. The adapted dose-response models properly predicted the patient's probability of developing acute side effects when receiving doses ≤ 50 Gy. In addition, it was shown that reduced radiation doses can influence the NTCP of acute side effects depending on the aggressiveness of NHL significantly. This study provided a foundation to prospectively assess the probability of adverse side effects among today's reduced radiation doses in the treatment of NHL.
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Affiliation(s)
- Julian Roers
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Daniel Rolf
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Andrea Baehr
- Department of Radiation Oncology, University Hospital of Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany
| | - Christoph Pöttgen
- Department of Radiation Oncology, University Hospital of Essen, West German Cancer Center (WTZ), Hufelandstraße 55, 45147 Essen, Germany
| | - Martina Stickan-Verfürth
- Department of Particle Therapy, University Hospital of Essen, West German Proton Therapy Center Essen (WPE), West German Cancer Center (WTZ), Am Mühlenbach 1, 45147 Essen, Germany
| | - Jan Siats
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Dominik A. Hering
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Christos Moustakis
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
- Department of Radiation Oncology, University Hospital of Leipzig, Stephanstraße 9a, 04103 Leipzig, Germany
| | - Maximilian Grohmann
- Department of Radiation Oncology, University Hospital of Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany
| | - Michael Oertel
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Uwe Haverkamp
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Martin Stuschke
- Department of Radiation Oncology, University Hospital of Essen, West German Cancer Center (WTZ), Hufelandstraße 55, 45147 Essen, Germany
| | - Beate Timmermann
- Department of Particle Therapy, University Hospital of Essen, West German Proton Therapy Center Essen (WPE), West German Cancer Center (WTZ), Am Mühlenbach 1, 45147 Essen, Germany
| | - Hans T. Eich
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Gabriele Reinartz
- Department of Radiation Oncology, University Hospital of Münster, West German Cancer Center (WTZ) Network Partner Site, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
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Rolf D, Reinartz G, Rehn S, Kittel C, Eich HT. Development of Organ-Preserving Radiation Therapy in Gastric Marginal Zone Lymphoma. Cancers (Basel) 2022; 14:cancers14040873. [PMID: 35205623 PMCID: PMC8869852 DOI: 10.3390/cancers14040873] [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: 11/29/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Gastric marginal zone lymphoma of the stomach is a rare cancer type primarily treated with oral proton pump inhibitors. If the disease does not respond to this, radiation is the treatment of choice. This review presents the development of radiation therapy over the last decades. Earlier, the stomach was surgically removed and irradiation was performed using large-field techniques and high doses of radiation. Currently, the standard treatment is the use of small-volume radiation therapy (with few side effects) with the preservation of the stomach, which provides excellent outcomes. In addition, this paper provides an outlook on current studies and possible future developments. Abstract Gastric marginal zone lymphoma (gMZL) of mucosa-associated lymphoid tissue (MALT) may persist even after H. pylori eradication, or it can be primarily Helicobacter pylori (H. pylori) independent. For patients without the successful eradication of lymphoma, or with progressive disease, treatment options have historically included partial or total gastrectomy. Presently, in these instances, curative radiation therapy (RT) is the current standard of care. This review emphasizes the historically changing role of radiation therapy in gMZL, progressing from large-volume RT without surgery, to localized RT, on its own, as a curative organ-preserving treatment. This overview shows the substantial progress in radiation therapy during the recent two to three decades, from high-dose, large-field techniques to low-dose, localized target volumes based on advanced imaging, three-dimensional treatment planning, and advanced treatment delivery techniques. RT has evolved from very large extended field techniques (EF) with prophylactic treatment of the whole abdomen and the supradiaphragmatic lymph nodes, applying doses between 30 and 50 Gy, to involved-field RT (IF), to the current internationally recommended involved site radiation therapy (ISRT) with a radiation dose of 24–30 Gy in gMZL. Stage-adapted RT is a highly effective and safe treatment with excellent overall survival rates and very rare acute or late treatment-related toxicities, as shown not only in retrospective studies, but also in large prospective multicenter studies, such as those conducted by the German Study Group on Gastrointestinal Lymphoma (DSGL). Further de-escalation of the radiation treatments with low-dose 20 Gy, as well as ultra-low-dose 4 Gy radiation therapy, is under investigation within ongoing prospective clinical trials of the International Lymphoma Radiation Oncology Group (ILROG) and of the German Lymphoma Alliance (GLA).
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Liu P, Gao XS, Wang Z, Li X, Xi C, Jia C, Xie M, Lyu F, Ding X. Investigate the Dosimetric and Potential Clinical Benefits Utilizing Stereotactic Body Radiation Therapy With Simultaneous Integrated Boost Technique for Locally Advanced Pancreatic Cancer: A Comparison Between Photon and Proton Beam Therapy. Front Oncol 2021; 11:747532. [PMID: 34631584 PMCID: PMC8493097 DOI: 10.3389/fonc.2021.747532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 08/30/2021] [Indexed: 12/24/2022] Open
Abstract
Purpose To investigate the potential clinical benefits of using stereotactic body radiation therapy (SBRT) with simultaneous integrated boost (SIB) technique for locally advanced pancreatic cancer (LAPC) among different treatment modalities and planning strategies, including photon and proton. Method A total of 19 patients were retrospectively selected in this study: 13 cases with the tumor located in the head of the pancreas and 6 cases with the tumor in the body of the pancreas. SBRT-SIB plans were generated using volumetric modulated arc therapy (VMAT), two-field Intensity Modulated Proton Therapy (IMPT), and three-field IMPT. The IMPT used the robust optimization parameters of ± 3.5% range and 5-mm setup uncertainties. Root-mean-square deviation dose (RMSD) volume histograms were used to evaluate the target coverage robustness quantitatively. Dosimetric metrics based on the dose-volume histogram (DVH), homogeneity index (HI), and normal tissue complication probability (NTCP) were analyzed to evaluate the potential clinical benefits among different planning groups. Results With a similar CTV and SIB coverage, two-field IMPT provided a lower maximum dose for the stomach (median: 18.6GyE, p<0.05) and duodenum (median: 32.62GyE, p<0.05) when the target was located in the head of the pancreas compared to VMAT and three-field IMPT. The risks of gastric bleed (3.42%) and grade ≥ 3 GI toxicity (4.55%) were also decreased. However, for the target in the body of the pancreas, VMAT showed a lower maximum dose for the stomach (median 30.93GyE, p<0.05) and toxicity of gastric bleed (median: 8.67%, p<0.05) compared to two-field IMPT and three-field IMPT, while other maximum doses and NTCPs were similar. The RMSD volume histogram (RVH) analysis shows that three-field IMPT provided better robustness for targets but not for OARs. Instead, three-field IMPT increased the Dmean of organs such as the stomach, duodenum, and intestine. Conclusion The results indicated that the tumor locations could play a critical role in determining clinical benefits among different treatment modalities. Two-field IMPT could be a better option for LAPC patients whose tumors are located in the head of the pancreas. It provides lower severe toxicity for the stomach and duodenum. Nevertheless, VMAT is preferred for the body with better protection for the possibility of gastric bleed.
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Affiliation(s)
- Peilin Liu
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Xian-Shu Gao
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Zishen Wang
- Department of Radiation Oncology, Hebei Yizhou Tumor Hospital, Zhuozhou, China
| | - Xiaomei Li
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Cao Xi
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Chenghao Jia
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Mu Xie
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Feng Lyu
- Department of Radiation Oncology, Peking University First Hospital, Beijing, China
| | - Xuanfeng Ding
- Department of Radiation Oncology, Beaumont Health, Proton Beam Therapy Center, Royal Oak, MI, United States
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Pulmonary Toxicity after Total Body Irradiation-An Underrated Complication? Estimation of Risk via Normal Tissue Complication Probability Calculations and Correlation with Clinical Data. Cancers (Basel) 2021; 13:cancers13122946. [PMID: 34204603 PMCID: PMC8231208 DOI: 10.3390/cancers13122946] [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] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/05/2021] [Accepted: 06/09/2021] [Indexed: 12/25/2022] Open
Abstract
Simple Summary Total body irradiation is an integral part of many conditioning regimens prior to allogeneic stem cell transplantation. It is a large-field technique affecting all organs at risk, of which the lungs are critical for patient survival. However, the precise rates of long-term pulmonary toxicities are unknown. This analysis provides a large patient cohort with long-term follow-up investigating TBI sequelae. Additionally, we present normal tissue complication probability calculations for acute and chronic lung toxicities to enable comparison between biophysical and real-world data. To our knowledge, this is the first adaption of this model to a total-body irradiation patient cohort, which will help to evaluate the feasibility and appropriateness of this approach. Abstract Total body irradiation (TBI) is an essential part of various conditioning regimens prior to allogeneic stem cell transplantation, but is accompanied by relevant (long-term) toxicities. In the lungs, a complex mechanism induces initial inflammation (pneumonitis) followed by chronic fibrosis. The hereby presented analysis investigates the occurrence of pulmonary toxicity in a large patient collective and correlates it with data derived from normal tissue complication probability (NTCP) calculations. The clinical data of 335 hemato-oncological patients undergoing TBI were analyzed with a follow-up of 85 months. Overall, 24.8% of all patients displayed lung toxicities, predominantly pneumonia and pulmonary obstructions (13.4% and 6.0%, respectively). NTCP calculations estimated median risks to be 20.3%, 0.6% and 20.4% for overall pneumonitis (both radiological and clinical), symptomatic pneumonitis and lung fibrosis, respectively. These numbers are consistent with real-world data from the literature and further specify radiological and clinical apparent toxicity rates. Overall, the estimated risk for clinical apparent pneumonitis is very low, corresponding to the probability of non-infectious acute respiratory distress syndrome, although the underlying pathophysiology is not identical. Radiological pneumonitis and lung fibrosis are expected to be more common but require a more precise documentation by the transplantation team, radiologists and radiation oncologists.
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