1
|
Thornton LM, Abi-Jaoudeh N, Lim HJ, Malagari K, Spieler BO, Kudo M, Finn RS, Lencioni R, White SB, Kokabi N, Jeyarajah DR, Chaudhury P, Liu D. Combination and Optimal Sequencing of Systemic and Locoregional Therapies in Hepatocellular Carcinoma: Proceedings from the Society of Interventional Radiology Foundation Research Consensus Panel. J Vasc Interv Radiol 2024; 35:818-824. [PMID: 38789204 DOI: 10.1016/j.jvir.2024.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 02/07/2024] [Accepted: 02/19/2024] [Indexed: 05/26/2024] Open
Abstract
Hepatocellular carcinoma, historically, has had a poor prognosis with very few systemic options. Furthermore, most patients at diagnosis are not surgical candidates. Therefore, locoregional therapy (LRT) has been widely used, with strong data supporting its use. Over the last 15 years, there has been progress in the available systemic agents. This has led to the updated Barcelona Clinic Liver Cancer (BCLC) algorithm's inclusion of these new systemic agents, with advocacy of earlier usage in those who progress on LRT or have tumor characteristics that make them less likely to benefit from LRT. However, neither the adjunct of LRT nor the specific sequencing of combination therapies is addressed directly. This Research Consensus Panel sought to highlight research priorities pertaining to the combination and optimal sequencing of LRT and systemic therapy, assessing the greatest needs across BCLC stages.
Collapse
Affiliation(s)
- Lindsay M Thornton
- Department of Interventional Radiology, University of Miami, Leonard M. Miller School of Medicine Miami, Florida.
| | - Nadine Abi-Jaoudeh
- Division of Interventional Radiology, University of California Irvine, Irvine, California
| | - Howard J Lim
- Department of Oncology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Katerina Malagari
- Department of Radiology, National and Kapodistrian University of Athens, Athens, Greece
| | - Benjamin Oren Spieler
- Department of Radiation Oncology, University of Miami, Leonard M Miller School of Medicine, Miami, Florida
| | - Masatoshi Kudo
- Department of Gastroenterology and Hepatology, Kindai University, Osaka, Japan
| | - Richard S Finn
- Department of Medicine, Division of Hematology/ Oncology, Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Riccardo Lencioni
- Department of Radiology, Pisa University Hospital and School of Medicine, Pisa, Italy
| | - Sarah B White
- Department of Radiology and Surgical Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Nima Kokabi
- Division of Interventional Radiology, Department of Radiology, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - D Rohan Jeyarajah
- Department of Surgery, Texas Christian University, Burnett School of Medicine, Fort Worth, Texas
| | - Prosanto Chaudhury
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - David Liu
- Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; School of Biomedical Engineering, Faculty of Applied Sciences, University of British Columbia, Vancouver, British Columbia, Canada; Department of Interventional Radiology, University of Miami, Leonard M Miller School of Medicine, Miami, Florida
| |
Collapse
|
2
|
Gits HC, Khosravi Flanigan MA, Kapplinger JD, Reisenauer JS, Eiken PW, Breen WG, Vu LH, Welch BT, Harmsen WS, Day CN, Olivier KR, Park SS, Garces YI, Hallemeier CL, Merrell KW, Ashman JB, Schild SE, Grams MP, Lucido JJ, Shen KR, Cassivi SD, Wigle D, Nichols FC, Blackmon S, Tapias LF, Callstrom MR, Owen D. Sublobar Resection, Stereotactic Body Radiation Therapy, and Percutaneous Ablation Provide Comparable Outcomes for Lung Metastasis-Directed Therapy. Chest 2024; 165:1247-1259. [PMID: 38103730 DOI: 10.1016/j.chest.2023.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND Prolonged survival of patients with metastatic disease has furthered interest in metastasis-directed therapy (MDT). RESEARCH QUESTION There is a paucity of data comparing lung MDT modalities. Do outcomes among sublobar resection (SLR), stereotactic body radiation therapy (SBRT), and percutaneous ablation (PA) for lung metastases vary in terms of local control and survival? STUDY DESIGN AND METHODS Medical records of patients undergoing lung MDT at a single cancer center between January 2015 and December 2020 were reviewed. Overall survival, local progression, and toxicity outcomes were collected. Patient and lesion characteristics were used to generate multivariable models with propensity weighted analysis. RESULTS Lung MDT courses (644 total: 243 SLR, 274 SBRT, 127 PA) delivered to 511 patients were included with a median follow-up of 22 months. There were 47 local progression events in 45 patients, and 159 patients died. Two-year overall survival and local progression were 80.3% and 63.3%, 83.8% and 9.6%, and 4.1% and 11.7% for SLR, SBRT, and PA, respectively. Lesion size per 1 cm was associated with worse overall survival (hazard ratio, 1.24; P = .003) and LP (hazard ratio, 1.50; P < .001). There was no difference in overall survival by modality. Relative to SLR, there was no difference in risk of local progression with PA; however, SBRT was associated with a decreased risk (hazard ratio, 0.26; P = .023). Rates of severe toxicity were low (2.1%-2.6%) and not different among groups. INTERPRETATION This study performs a propensity weighted analysis of SLR, SBRT, and PA and shows no impact of lung MDT modality on overall survival. Given excellent local control across MDT options, a multidisciplinary approach is beneficial for patient triage and longitudinal management.
Collapse
Affiliation(s)
- Hunter C Gits
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN
| | | | | | | | | | - William G Breen
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - Linh H Vu
- Pulmonary and Critical Care Medicine, and Biostatistics and Health Sciences Research, Mayo Clinic, Rochester, MN
| | | | - William S Harmsen
- Pulmonary and Critical Care Medicine, and Biostatistics and Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Courtney N Day
- Pulmonary and Critical Care Medicine, and Biostatistics and Health Sciences Research, Mayo Clinic, Rochester, MN
| | | | - Sean S Park
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN
| | | | | | | | | | | | - Michael P Grams
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - J John Lucido
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN
| | | | | | | | | | | | | | | | - Dawn Owen
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN.
| |
Collapse
|
3
|
Lin MX, Zang D, Liu CG, Han X, Chen J. Immune checkpoint inhibitor-related pneumonitis: research advances in prediction and management. Front Immunol 2024; 15:1266850. [PMID: 38426102 PMCID: PMC10902117 DOI: 10.3389/fimmu.2024.1266850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 02/02/2024] [Indexed: 03/02/2024] Open
Abstract
The advent of immune-checkpoint inhibitors (ICIs) has revolutionized the treatment of malignant solid tumors in the last decade, producing lasting benefits in a subset of patients. However, unattended excessive immune responses may lead to immune-related adverse events (irAEs). IrAEs can manifest in different organs within the body, with pulmonary toxicity commonly referred to as immune checkpoint inhibitor-related pneumonitis (CIP). The CIP incidence remains high and is anticipated to rise further as the therapeutic indications for ICIs expand to encompass a wider range of malignancies. The diagnosis and treatment of CIP is difficult due to the large individual differences in its pathogenesis and severity, and severe CIP often leads to a poor prognosis for patients. This review summarizes the current state of clinical research on the incidence, risk factors, predictive biomarkers, diagnosis, and treatment for CIP, and we address future directions for the prevention and accurate prediction of CIP.
Collapse
Affiliation(s)
| | | | | | | | - Jun Chen
- Department of Oncology, The Second Hospital of Dalian Medical University, Dalian, China
| |
Collapse
|
4
|
Paganetti H. A review on lymphocyte radiosensitivity and its impact on radiotherapy. Front Oncol 2023; 13:1201500. [PMID: 37601664 PMCID: PMC10435323 DOI: 10.3389/fonc.2023.1201500] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/17/2023] [Indexed: 08/22/2023] Open
Abstract
It is well known that radiation therapy causes lymphopenia in patients and that this is correlated with a negative outcome. The mechanism is not well understood because radiation can have both immunostimulatory and immunosuppressive effects. How tumor dose conformation, dose fractionation, and selective lymph node irradiation in radiation therapy does affect lymphopenia and immune response is an active area of research. In addition, understanding the impact of radiation on the immune system is important for the design and interpretation of clinical trials combining radiation with immune checkpoint inhibitors, both in terms of radiation dose and treatment schedules. Although only a few percent of the total lymphocyte population are circulating, it has been speculated that their increased radiosensitivity may contribute to, or even be the primary cause of, lymphopenia. This review summarizes published data on lymphocyte radiosensitivity based on human, small animal, and in vitro studies. The data indicate differences in radiosensitivity among lymphocyte subpopulations that affect their relative contribution and thus the dynamics of the immune response. In general, B cells appear to be more radiosensitive than T cells and NK cells appear to be the most resistant. However, the reported dose-response data suggest that in the context of lymphopenia in patients, aspects other than cell death must also be considered. Not only absolute lymphocyte counts, but also lymphocyte diversity and activity are likely to be affected by radiation. Taken together, the reviewed data suggest that it is unlikely that radiation-induced cell death in lymphocytes is the sole factor in radiation-induced lymphopenia.
Collapse
Affiliation(s)
- Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital, Boston MA, United States
- Harvard Medical School, Boston MA, United States
| |
Collapse
|
5
|
McCullum L, Shin J, Xing S, Beekman C, Schuemann J, Hong T, Duda D, Mohan R, Lin S, Correa-Alfonso CM, Domal S, Withrow J, Bolch W, Paganetti H, Grassberger C. Predicting Severity of Radiation Induced Lymphopenia in Individual Proton Therapy Patients for Varying Dose Rate and Fractionation Using Dynamic 4-Dimensional Blood Flow Simulations. Int J Radiat Oncol Biol Phys 2023:S0360-3016(23)00105-0. [PMID: 36739919 PMCID: PMC10363211 DOI: 10.1016/j.ijrobp.2023.01.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 01/11/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023]
Abstract
PURPOSE Radiation-induced lymphopenia has gained attention recently as the result of its correlation with survival in a range of indications, particularly when combining radiation therapy (RT) with immunotherapy. The purpose of this study is to use a dynamic blood circulation model combined with observed lymphocyte depletion in patients to derive the in vivo radiosensitivity of circulating lymphocytes and study the effect of RT delivery parameters. METHODS AND MATERIALS We assembled a cohort of 17 patients with hepatocellular carcinoma treated with proton RT alone in 15 fractions (fx) using conventional dose rates (beam-on time [BOT], 120 seconds) for whom weekly absolute lymphocyte counts (ALCs) during RT and follow-up were available. We used HEDOS, a time-dependent, whole-body, blood flow computational framework, in combination with explicit liver blood flow modeling, to calculate the dose volume histograms for circulating lymphocytes for changing BOTs (1 second-300 seconds) and fractionations (5 fx, 15 fx). From this, we used the linear cell survival model and an exponential model to determine patient-specific lymphocyte radiation sensitivity, α, and recovery, σ, respectively. RESULTS The in vivo-derived patient-specific α had a median of 0.65 Gy-1 (range, 0.30-1.38). Decreasing BOT to 1 second led to an increased average end-of-treatment ALC of 27.5%, increasing to 60.3% when combined with the 5-fx regimen. Decreasing to 5 fx at the conventional dose rate led to an increase of 17.0% on average. The benefit of both increasing dose rate and reducing the number of fractions was patient specificࣧpatients with highly sensitive lymphocytes benefited most from decreasing BOT, whereas patients with slow lymphocyte recovery benefited most from the shorter fractionation regimen. CONCLUSIONS We observed that increasing dose rate at the same fractionation reduced ALC depletion more significantly than reducing the number of fractions. High-dose-rates led to an increased sparing of lymphocytes when shortening the fractionation regimen, particularly for patients with radiosensitive lymphocytes at elevated risk.
Collapse
Affiliation(s)
- Lucas McCullum
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
| | - Jungwook Shin
- Radiation Epidemiology Branch, National Cancer Institute, Rockville, Maryland
| | - Stella Xing
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Chris Beekman
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Jan Schuemann
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Theodore Hong
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Dan Duda
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Radhe Mohan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Steven Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Camilo M Correa-Alfonso
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Sean Domal
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Julia Withrow
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Wesley Bolch
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
6
|
A Systematic Review on the Impact of Hypofractionated and Stereotactic Radiotherapy on Immune Cell Subpopulations in Cancer Patients. Cancers (Basel) 2022; 14:cancers14215190. [DOI: 10.3390/cancers14215190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/16/2022] Open
Abstract
We investigated how hypofractionated radiotherapy (HFRT) and stereotactic body radiotherapy (SBRT) may impact immune cells in different type of tumors. A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The PubMed, Embase and Cochrane databases were searched. Overall, 11 studies met the inclusion criteria and were eligible for the present analysis. Both HFRT and SBRT have different impact on lymphocyte subpopulations, confirming their immunomodulatory effect which may have a crucial role in future combined treatment with new emergent therapies such as immunotherapy. Further studies are needed to shed more light on this emerging topic to ultimately improve patient care, treatment and clinical benefits for cancer patients.
Collapse
|
7
|
Lung Inflammation Predictors in Combined Immune Checkpoint-Inhibitor and Radiation Therapy—Proof-of-Concept Animal Study. Biomedicines 2022; 10:biomedicines10051173. [PMID: 35625911 PMCID: PMC9138533 DOI: 10.3390/biomedicines10051173] [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: 04/14/2022] [Revised: 04/28/2022] [Accepted: 05/06/2022] [Indexed: 12/10/2022] Open
Abstract
Purpose: Combined radiotherapy (RT) and immune checkpoint-inhibitor (ICI) therapy can act synergistically to enhance tumor response beyond what either treatment can achieve alone. Alongside the revolutionary impact of ICIs on cancer therapy, life-threatening potential side effects, such as checkpoint-inhibitor-induced (CIP) pneumonitis, remain underreported and unpredictable. In this preclinical study, we hypothesized that routinely collected data such as imaging, blood counts, and blood cytokine levels can be utilized to build a model that predicts lung inflammation associated with combined RT/ICI therapy. Materials and Methods: This proof-of-concept investigational work was performed on Lewis lung carcinoma in a syngeneic murine model. Nineteen mice were used, four as untreated controls and the rest subjected to RT/ICI therapy. Tumors were implanted subcutaneously in both flanks and upon reaching volumes of ~200 mm3 the animals were imaged with both CT and MRI and blood was collected. Quantitative radiomics features were extracted from imaging of both lungs. The animals then received RT to the right flank tumor only with a regimen of three 8 Gy fractions (one fraction per day over 3 days) with PD-1 inhibitor administration delivered intraperitoneally after each daily RT fraction. Tumor volume evolution was followed until tumors reached the maximum size allowed by the Institutional Animal Care and Use Committee (IACUC). The animals were sacrificed, and lung tissues harvested for immunohistochemistry evaluation. Tissue biomarkers of lung inflammation (CD45) were tallied, and binary logistic regression analyses were performed to create models predictive of lung inflammation, incorporating pretreatment CT/MRI radiomics, blood counts, and blood cytokines. Results: The treated animal cohort was dichotomized by the median value of CD45 infiltration in the lungs. Four pretreatment radiomics features (3 CT features and 1 MRI feature) together with pre-treatment neutrophil-to-lymphocyte (NLR) ratio and pre-treatment granulocyte-macrophage colony-stimulating factor (GM-CSF) level correlated with dichotomized CD45 infiltration. Predictive models were created by combining radiomics with NLR and GM-CSF. Receiver operating characteristic (ROC) analyses of two-fold internal cross-validation indicated that the predictive model incorporating MR radiomics had an average area under the curve (AUC) of 0.834, while the model incorporating CT radiomics had an AUC of 0.787. Conclusions: Model building using quantitative imaging data, blood counts, and blood cytokines resulted in lung inflammation prediction models justifying the study hypothesis. The models yielded very-good-to-excellent AUCs of more than 0.78 on internal cross-validation analyses.
Collapse
|
8
|
Leveraging Blood-Based Diagnostics to Predict Tumor Biology and Extend the Application and Personalization of Radiotherapy in Liver Cancers. Int J Mol Sci 2022; 23:ijms23041926. [PMID: 35216045 PMCID: PMC8879105 DOI: 10.3390/ijms23041926] [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: 01/14/2022] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 01/27/2023] Open
Abstract
While the incidence of primary liver cancers has been increasing worldwide over the last few decades, the mortality has remained consistently high. Most patients present with underlying liver disease and have limited treatment options. In recent years, radiotherapy has emerged as a promising approach for some patients; however, the risk of radiation induced liver disease (RILD) remains a limiting factor for some patients. Thus, the discovery and validation of biomarkers to measure treatment response and toxicity is critical to make progress in personalizing radiotherapy for liver cancers. While tissue biomarkers are optimal, hepatocellular carcinoma (HCC) is typically diagnosed radiographically, making tumor tissue not readily available. Alternatively, blood-based diagnostics may be a more practical option as blood draws are minimally invasive, widely availability and may be performed serially during treatment. Possible blood-based diagnostics include indocyanine green test, plasma or serum levels of HGF or cytokines, circulating blood cells and genomic biomarkers. The albumin–bilirubin (ALBI) score incorporates albumin and bilirubin to subdivide patients with well-compensated underlying liver dysfunction (Child–Pugh score A) into two distinct groups. This review provides an overview of the current knowledge on circulating biomarkers and blood-based scores in patients with malignant liver disease undergoing radiotherapy and outlines potential future directions.
Collapse
|
9
|
Dobiasch S, Kampfer S, Steiger K, Schilling D, Fischer JC, Schmid TE, Weichert W, Wilkens JJ, Combs SE. Histopathological Tumor and Normal Tissue Responses after 3D-Planned Arc Radiotherapy in an Orthotopic Xenograft Mouse Model of Human Pancreatic Cancer. Cancers (Basel) 2021; 13:5656. [PMID: 34830813 PMCID: PMC8616260 DOI: 10.3390/cancers13225656] [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: 10/04/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal human cancers. Innovative treatment concepts may enhance oncological outcome. Clinically relevant tumor models are essential in developing new therapeutic strategies. In the present study, we used two human PDAC cell lines for an orthotopic xenograft mouse model and compared treatment characteristics between this in vivo tumor model and PDAC patients. Tumor-bearing mice received stereotactic high-precision irradiation using arc technique after 3D-treatment planning. Induction of DNA damage in tumors and organs at risk (OARs) was histopathologically analyzed by the DNA damage marker γH2AX and compared with results after unprecise whole-abdomen irradiation. Our mouse model and preclinical setup reflect the characteristics of PDAC patients and clinical RT. It was feasible to perform stereotactic high-precision RT after defining tumor and OARs by CT imaging. After stereotactic RT, a high rate of DNA damage was mainly observed in the tumor but not in OARs. The calculated dose distributions and the extent of the irradiation field correlate with histopathological staining and the clinical example. We established and validated 3D-planned stereotactic RT in an orthotopic PDAC mouse model, which reflects the human RT. The efficacy of the whole workflow of imaging, treatment planning, and high-precision RT was proven by longitudinal analysis showing a significant improved survival. Importantly, this model can be used to analyze tumor regression and therapy-related toxicity in one model and will allow drawing clinically relevant conclusions.
Collapse
Affiliation(s)
- Sophie Dobiasch
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
- Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, 80336 Munich, Germany;
| | - Severin Kampfer
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
- Physics Department, Technical University of Munich (TUM), James-Franck-Str. 1, 85748 Garching, Germany
| | - Katja Steiger
- Institute of Pathology, Technical University of Munich (TUM), Trogerstr. 18, 81675 Munich, Germany;
- Comparative Experimental Pathology, Technical University of Munich (TUM), Trogerstr. 18, 81675 Munich, Germany
| | - Daniela Schilling
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
- Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Julius C. Fischer
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
| | - Thomas E. Schmid
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
- Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Wilko Weichert
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, 80336 Munich, Germany;
- Institute of Pathology, Technical University of Munich (TUM), Trogerstr. 18, 81675 Munich, Germany;
| | - Jan J. Wilkens
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
- Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Physics Department, Technical University of Munich (TUM), James-Franck-Str. 1, 85748 Garching, Germany
| | - Stephanie E. Combs
- Department of Radiation Oncology, Technical University of Munich (TUM), Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany; (S.K.); (D.S.); (J.C.F.); (T.E.S.); (J.J.W.); (S.E.C.)
- Institute of Radiation Medicine (IRM), Department of Radiation Sciences (DRS), Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, 80336 Munich, Germany;
| |
Collapse
|
10
|
Mihaylov IB, Totiger TM, Giret TM, Wang D, Spieler B, Welford S. Toward prediction of abscopal effect in radioimmunotherapy: Pre-clinical investigation. PLoS One 2021; 16:e0255923. [PMID: 34428218 PMCID: PMC8384195 DOI: 10.1371/journal.pone.0255923] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/26/2021] [Indexed: 11/18/2022] Open
Abstract
PURPOSE Immunotherapy (IT) and radiotherapy (RT) can act synergistically, enhancing antitumor response beyond what either treatment can achieve separately. Anecdotal reports suggest that these results are in part due to the induction of an abscopal effect on non-irradiated lesions. Systematic data on incidence of the abscopal effect are scarce, while the existence and the identification of predictive signatures or this phenomenon are lacking. The purpose of this pre-clinical investigational work is to shed more light on the subject by identifying several imaging features and blood counts, which can be utilized to build a predictive binary logistic model. MATERIALS AND METHODS This proof-of-principle study was performed on Lewis Lung Carcinoma in a syngeneic, subcutaneous murine model. Nineteen mice were used: four as control and the rest were subjected to combined RT plus IT regimen. Tumors were implanted on both flanks and after reaching volume of ~200 mm3 the animals were CT and MRI imaged and blood was collected. Quantitative imaging features (radiomics) were extracted for both flanks. Subsequently, the treated animals received radiation (only to the right flank) in three 8 Gy fractions followed by PD-1 inhibitor administrations. Tumor volumes were followed and animals exhibiting identical of better tumor growth delay on the non-irradiated (left) flank as compared to the irradiated flank were identified as experiencing an abscopal effect. Binary logistic regression analysis was performed to create models for CT and MRI radiomics and blood counts, which are predictive of the abscopal effect. RESULTS Four of the treated animals experienced an abscopal effect. Three CT and two MRI radiomics features together with the pre-treatment neutrophil-to-lymphocyte (NLR) ratio correlated with the abscopal effect. Predictive models were created by combining the radiomics with NLR. ROC analyses indicated that the CT model had AUC of 0.846, while the MRI model had AUC of 0.946. CONCLUSIONS The combination of CT and MRI radiomics with blood counts resulted in models with AUCs of 1 on the modeling dataset. Application of the models to the validation dataset exhibited AUCs above 0.84, indicating very good predictive power of the combination between quantitative imaging and blood counts.
Collapse
Affiliation(s)
- Ivaylo B. Mihaylov
- Department of Radiation Oncology, University of Miami Miler School of Medicine, Miami, FL, United States of America
| | - Tulasigeri M. Totiger
- Department of Radiation Oncology, University of Miami Miler School of Medicine, Miami, FL, United States of America
| | - Teresa M. Giret
- Department of Radiation Oncology, University of Miami Miler School of Medicine, Miami, FL, United States of America
| | - Dazhi Wang
- Department of Radiation Oncology, University of Miami Miler School of Medicine, Miami, FL, United States of America
| | - Benjamin Spieler
- Department of Radiation Oncology, University of Miami Miler School of Medicine, Miami, FL, United States of America
| | - Scott Welford
- Department of Radiation Oncology, University of Miami Miler School of Medicine, Miami, FL, United States of America
| |
Collapse
|
11
|
Bornschlegl S, Gustafson MP, Delivanis DA, Ryder M, Liu MC, Vasmatzis G, Hallemeier CL, Park SS, Roberts LR, Parney IF, Jelinek DF, Dietz AB. Categorisation of patients based on immune profiles: a new approach to identifying candidates for response to checkpoint inhibitors. Clin Transl Immunology 2021; 10:e1267. [PMID: 33968403 PMCID: PMC8082708 DOI: 10.1002/cti2.1267] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 11/12/2022] Open
Abstract
Objectives Inhibitors to the checkpoint proteins cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and programmed cell death protein 1 (PD-1) are becoming widely used in cancer treatment. However, a lack of understanding of the patient response to treatment limits accurate identification of potential responders to immunotherapy. Methods In this study, we assessed the expression of PD-1 and CTLA-4 on 19 leucocyte populations in the peripheral blood of 74 cancer patients. A reference data set for PD-1 and CTLA-4 was established for 40 healthy volunteers to determine the normal expression patterns for these checkpoint proteins. Results Unsupervised hierarchical clustering found four immune profiles shared across the solid tumor types, while chronic lymphocytic leukaemia patients had an immune profile largely unique to them. Furthermore, we measured these leucocyte populations on an additional cohort of 16 cancer patients receiving the PD-1 inhibitor pembrolizumab in order to identify differences between responders and non-responders, as well as compared to healthy volunteers (n = 20). We observed that cancer patients had pre-treatment PD-1 and CTLA-4 expression on their leucocyte populations at different levels compared to healthy volunteers and identified two leucocyte populations positive for CTLA-4 that had not been previously described. We found higher levels of PD-1+ CD3+ CD4- CD8- cells in patients with progressive disease and have identified it as a potential biomarker of response, as well as identifying other significant differences in phenotypes between responders and non-responders. Conclusion These results are suggestive that categorisation of patients based on immune profiles may differentiate responders from non-responders to immunotherapy for solid tumors.
Collapse
Affiliation(s)
- Svetlana Bornschlegl
- Immune Progenitor and Cell Therapy (IMPACT) Division of Experimental Pathology Mayo Clinic Rochester MN USA
| | - Michael P Gustafson
- Immune Progenitor and Cell Therapy (IMPACT) Division of Experimental Pathology Mayo Clinic Rochester MN USA.,Division of Laboratory Medicine Department of Laboratory Medicine and Pathology Mayo Clinic Arizona Phoenix AZ USA
| | - Danae A Delivanis
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition Mayo Clinic Rochester MN USA
| | - Mabel Ryder
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition Mayo Clinic Rochester MN USA.,Division of Medical Oncology Mayo Clinic Rochester MN USA
| | - Minetta C Liu
- Division of Medical Oncology Mayo Clinic Rochester MN USA
| | | | | | - Sean S Park
- Department of Radiation Oncology Mayo Clinic Rochester MN USA
| | - Lewis R Roberts
- Division of Gastroenterology and Hepatology Mayo Clinic Rochester MN USA
| | - Ian F Parney
- Department of Neurosurgery Mayo Clinic Rochester MN USA
| | | | - Allan B Dietz
- Immune Progenitor and Cell Therapy (IMPACT) Division of Experimental Pathology Mayo Clinic Rochester MN USA.,Division of Transfusion Medicine Department of Laboratory Medicine and Pathology Mayo Clinic Rochester MN USA
| |
Collapse
|
12
|
Paganetti H, Beltran C, Both S, Dong L, Flanz J, Furutani K, Grassberger C, Grosshans DR, Knopf AC, Langendijk JA, Nystrom H, Parodi K, Raaymakers BW, Richter C, Sawakuchi GO, Schippers M, Shaitelman SF, Teo BKK, Unkelbach J, Wohlfahrt P, Lomax T. Roadmap: proton therapy physics and biology. Phys Med Biol 2021; 66. [DOI: 10.1088/1361-6560/abcd16] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 11/23/2020] [Indexed: 12/12/2022]
|
13
|
Sung W, Grassberger C, McNamara AL, Basler L, Ehrbar S, Tanadini-Lang S, Hong TS, Paganetti H. A tumor-immune interaction model for hepatocellular carcinoma based on measured lymphocyte counts in patients undergoing radiotherapy. Radiother Oncol 2020; 151:73-81. [PMID: 32679308 DOI: 10.1016/j.radonc.2020.07.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 12/21/2022]
Abstract
PURPOSE The impact of radiation therapy on the immune system has recently gained attention particularly when delivered in combination with immunotherapy. However, it is unclear how different treatment fractionation regimens influence the interaction between the immune system and radiation. The goal of this work was to develop a mathematical model that quantifies both the immune stimulating as well as the immunosuppressive effects of radiotherapy and simulates the effects of different fractionation regimens based on patient data. METHODS AND MATERIALS The framework describes the temporal evolution of tumor cells, lymphocytes, and inactivated dying tumor cells releasing antigens during radiation therapy, specifically modeling how recruited lymphocytes inhibit tumor progression. The parameters of the model were partly taken from the literature and in part extracted from blood samples (circulating lymphocytes: CLs) collected from hepatocellular carcinoma patients undergoing radiotherapy and their outcomes. The dose volume histograms to circulating lymphocytes were calculated with a probability-based model. RESULTS Based on the fitted parameters, the model enabled a study into the depletion and recovery of CLs in patients as a function of fractionation regimen. Our results quantify the ability of short fractionation regimens to lead to shorter periods of lymphocyte depletion and predict faster recovery after the end of treatment. The model shows that treatment breaks between fractions can prolong the period of lymphocyte depletion and should be avoided. CONCLUSIONS This study introduces a mathematical model for tumor-immune interactions using clinically extracted radiotherapy patient data, which can be applied to design trials aimed at minimizing lymphocyte depleting effects in radiation therapy.
Collapse
Affiliation(s)
- Wonmo Sung
- Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, United States
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, United States
| | - Aimee Louise McNamara
- Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, United States
| | - Lucas Basler
- Department of Radiation Oncology, Paul Scherrer Institut, Villigen, Switzerland
| | - Stefanie Ehrbar
- Department of Radiation Oncology, University Hospital Zurich, Switzerland
| | | | - Theodore S Hong
- Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, United States
| | - Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, United States.
| |
Collapse
|
14
|
Cesaire M, Le Mauff B, Rambeau A, Toutirais O, Thariat J. [Mechanisms of radiation-induced lymphopenia and therapeutic impact]. Bull Cancer 2020; 107:813-822. [PMID: 32451070 DOI: 10.1016/j.bulcan.2020.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/16/2020] [Accepted: 04/19/2020] [Indexed: 01/29/2023]
Abstract
Radiation induced lymphopenia is frequent and can be severe and durable. Although lymphocytes have long been known as highly radiosensitive cells, it is poorly characterized. Radiation-induced lymphopenia seems to affect lymphocyte subpopulations differently and seems to be influenced by radiation modalities. The depth and duration of lymphopenia depend on the location of the irradiation and the volumes of treatment. Importantly, radiation-induced lymphopenia has been associated with poorer prognosis in several tumor types. The knowledge about radiation-induced lymphopenia might lead to a rethinking of the modalities of radiotherapy and new approaches to restore lymphocytes counts.
Collapse
Affiliation(s)
- Mathieu Cesaire
- Centre François-Baclesse/ARCHADE, département de radiothérapie, 3, avenue General Harris, 14000 Caen, France
| | - Brigitte Le Mauff
- Normandie University, UNICAEN, sérine protéases et physiopathologie de l'unité neurovasculaire, Inserm U919, Caen, France; University Hospital of Caen, Department of Immunology, Caen, France
| | - Audrey Rambeau
- Centre François-Baclesse/ARCHADE, département de radiothérapie, 3, avenue General Harris, 14000 Caen, France
| | - Olivier Toutirais
- Normandie University, UNICAEN, sérine protéases et physiopathologie de l'unité neurovasculaire, Inserm U919, Caen, France; University Hospital of Caen, Department of Immunology, Caen, France
| | - Juliette Thariat
- Centre François-Baclesse/ARCHADE, département de radiothérapie, 3, avenue General Harris, 14000 Caen, France; Laboratoire de physique corpusculaire IN2P3/ENSICAEN - UMR6534, Caen, France; Normandie University, UNICAEN, Caen, France.
| |
Collapse
|
15
|
Relaxin-FOLFOX-IL-12 triple combination therapy engages memory response and achieves long-term survival in colorectal cancer liver metastasis. J Control Release 2019; 319:213-221. [PMID: 31899270 DOI: 10.1016/j.jconrel.2019.12.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/19/2019] [Accepted: 12/30/2019] [Indexed: 12/15/2022]
Abstract
Induction of memory T cell response is inefficient in colorectal cancer (CRC) liver metastasis following existing therapies due to abundant stroma and immunosuppressive environment within the metastatic liver, which leads to fast disease progression, high recurrence rate, and short survival. Two fundamental steps are involved to elicit extensive memory T cell response: stimulation of naive T cells with robust and persistent antigen signals; and maintenance of differentiated memory T cells with survival factors. Here, we demonstrate a rational design of triple combination regimen, including relaxin (RLN), FOLFOX (combination of 5-fluorouracil, leucovorin, and oxaliplatin), and IL-12, successfully stimulates central memory T cells and achieves long-term survival in an aggressive experimental CRC liver metastasis model. Sequential administration of FOLFOX and IL-12 gene therapy following stromal deactivation by RLN gene therapy completely cured established CRC liver metastases in ~50% of mice and provided long-lasting protection against tumor recurrence. The study here may highlight the potential of evoking memory response as a curative therapy for the treatment of CRC liver metastasis.
Collapse
|
16
|
Local Tumor Control and Patient Outcome Using Stereotactic Body Radiation Therapy for Hepatocellular Carcinoma: iRECIST as a Potential Substitute for Traditional Criteria. AJR Am J Roentgenol 2019; 213:1232-1239. [PMID: 31613663 DOI: 10.2214/ajr.18.20842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE. The purpose of this study was to investigate whether, compared with traditional criteria, the modified Response Evaluation Criteria in Solid Tumors version 1.1 for immune-based therapeutics (iRECIST) improves prediction of local tumor control and survival in patients with hepatocellular carcinoma (HCC) treated with stereotactic body radiotherapy (SBRT). MATERIALS AND METHODS. Fifty-one HCC lesions (mean size, 3.1 cm) treated with SBRT in 41 patients (mean age, 67 years) were retrospectively included. Each patient underwent CT or MRI before SBRT and at least once after SBRT. Best overall response was categorized using Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1), iRECIST, World Health Organization (WHO) criteria, modified Response Evaluation Criteria in Solid Tumors (mRECIST), and European Association for the Study of the Liver (EASL) criteria. Lesions were then classified as local tumor control (i.e., stable disease, partial response, or complete response) or local treatment failure (i.e., progressive disease) by each tumor response criteria. Proportions of local tumor control were compared using the McNemar exact test. The 1-year overall survival was estimated using the Kaplan-Meier method. RESULTS. The median follow-up after SBRT was 21.0 months. The local tumor control rate was 94.1% (48/51) by iRECIST, 88.2% (45/51) by RECIST 1.1, 72.5% (37/51) by WHO criteria, 80.4% (41/51) by mRECIST, and 72.5% (37/51) by EASL criteria. The local tumor control rate was significantly higher according to iRECIST compared with WHO (p = 0.0010) and EASL (p = 0.0225) criteria. The 1-year survival rate for patients with local tumor control according to iRECIST (86.4%) was higher (although not statistically significant) compared with the 1-year survival rate for patients with local tumor control according to the other response criteria. CONCLUSION. iRECIST may provide more robust interpretation of HCC response after SBRT, yielding improved prediction of local tumor control and 1-year survival rates compared with traditional criteria.
Collapse
|
17
|
Zhuang Y, Yuan BY, Chen GW, Zhao XM, Hu Y, Zhu WC, Zeng ZC, Chen YX. Association Between Circulating Lymphocyte Populations and Outcome After Stereotactic Body Radiation Therapy in Patients With Hepatocellular Carcinoma. Front Oncol 2019; 9:896. [PMID: 31552194 PMCID: PMC6748162 DOI: 10.3389/fonc.2019.00896] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 08/28/2019] [Indexed: 12/28/2022] Open
Abstract
Background and Objective: Radiation-induced lymphopenia has a tangible impact on overall survival (OS) in multiple solid tumors. We investigated the association between circulating lymphocyte populations (CLPs) before and after stereotactic body radiation therapy (SBRT) and OS in patients with hepatocellular carcinoma (HCC). Materials and Methods: Seventy-eight HCC patients treated with SBRT between January 2013 and June 2017 were retrospectively analyzed. Baseline and post-treatment total peripheral lymphocyte counts (TPLCs) and values of different CLPs were obtained and analyzed for clinical outcomes. Univariate and multivariate Cox regression analyses were used to explore the independent prognostic factors for patient survival. Results: The one-, two- and three-year OS rates were 94.8, 75.9, and 63.3%, respectively. The mean TPLCs before and 10 days after SBRT were 1.4 × 109/L and 0.7 × 109/L, respectively. The TPLC recovered to its baseline value 1 year after SBRT. Multivariate analysis results revealed that variables, including tumor necrosis factor-alpha (TNF-α) level <5.5 ng/mL and post-treatment TPLC <0.45 × 109/L were independent factors for inferior OS. Further analysis showed that the values of CLPs, including CD3+, CD4+, CD8+, CD19+, and CD16+56+ cells dropped profoundly 10 days after SBRT, among which CD19+ B cell count was mostly depleted and gradually recovered after 2 months. Univariate analysis showed that both baseline and post-treatment TPLC and CLP (except post-treatment B cell) counts were significantly associated with patient OS (p < 0.05 for each). Further stratified analysis performed according to OS at 2 years demonstrated that the CD16+CD56+ NK cell counts remained significantly elevated in patients with better survival (OS > 2 years) compared to those in short-term survivors at 10 days, 1 month, and 2 months after SBRT (p < 0.05 for each). In addition, there were significant differences in TPLC and CD8+ T cell counts in patients with long-term and short-term OS at 2 months after SBRT (p < 0.05). Conclusions: Peripheral lymphopenia after SBRT might be an independent prognostic factor for poorer outcome in HCC patients. Post-treatment lymphocyte subsets, including CD8+ T cell and NK cell counts were also associated with 2-year OS rates.
Collapse
Affiliation(s)
- Yuan Zhuang
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Bao-Ying Yuan
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Gen-Wen Chen
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiao-Mei Zhao
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yong Hu
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wen-Chao Zhu
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhao-Chong Zeng
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yi-Xing Chen
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| |
Collapse
|
18
|
Rochigneux P, Nault JC, Mallet F, Chretien AS, Barget N, Garcia AJ, Del Pozo L, Bourcier V, Blaise L, Grando-Lemaire V, N’Kontchou G, Nahon P, Seror O, Ziol M, Ganne-Carrié N, Olive D. Dynamic of systemic immunity and its impact on tumor recurrence after radiofrequency ablation of hepatocellular carcinoma. Oncoimmunology 2019; 8:1615818. [PMID: 31413924 PMCID: PMC6682367 DOI: 10.1080/2162402x.2019.1615818] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/30/2019] [Accepted: 05/01/2019] [Indexed: 02/08/2023] Open
Abstract
Background: Percutaneous radiofrequency ablation (RFA) is one of the main treatments of small hepatocellular carcinoma (HCC). However, it remains unclear whether this local treatment can induce systemic immune variations. Methods: We conducted a prospective study in a tertiary center including consecutive cirrhotic patients with unifocal HCC<5 cm treated by a first RFA between 2010 and 2014. Peripheral blood mononuclear cells were isolated on the day before (D0), day after (D1) and month after RFA (M1). Frequencies and phenotypes of myeloid cells, T cells, and NK cells were compared between timepoints. Overall recurrence and associated variables were estimated using Kaplan-Meier, log-rank and Cox proportional-hazards models. Results: 80 patients were included (69% male, median age: 67 years old). Main aetiologies of HCC were alcohol (51%), hepatitis C virus (45%), non-alcoholic steatohepatitis (36%) and hepatitis B virus (9%). Median overall survival was 55 months (M); median progression-free survival was 29.5M. Among innate immune populations, we observed variations between D0, D1 and M1 in NKp30+ NK cells (p < .0001) and in plasmacytoid dendritic cells (pDC, p < .01). Concerning adaptive immunity, we observed variations in CD8 Central Memory (p < .05) and CD28+ CD8 Central Memory (p < .01). An early dynamic (D0/D1) of activated NKp30+ NK cells was associated with a decreased overall recurrence (log-rank, p = .016, median delay 25.1 vs 40.6 months). In contrast, a late dynamic (D1/M1) of immature NK cells (CD56bright) and altered myeloid DC (PDL1+) was associated with an increased overall recurrence (log-rank, p = .011 and p = .0044, respectively). In multivariate analysis, variation of immature NK cells predicts tumor recurrence independently of classical clinical prognostic features (HR = 2.41, 95% CI: 1.15-5.057), p = .019). Conclusions: Percutaneous RFA of small HCC leads to systemic modifications of innate and adaptive immunity closely linked with overall tumor recurrence.
Collapse
Affiliation(s)
- Philippe Rochigneux
- Medical Oncology Department, Paoli-Calmettes Institute, Marseille, France
- Team Immunity and Cancer, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068, CNRS, UMR7258, Institut Paoli-Calmettes, Aix-Marseille University, Marseille, France
| | - Jean-Charles Nault
- Inserm UMR 1162, Génomique fonctionnelle des Tumeurs solides, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Françoise Mallet
- Immunomonitoring Platform, Institut Paoli-Calmettes, Marseille, France
| | - Anne-Sophie Chretien
- Team Immunity and Cancer, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068, CNRS, UMR7258, Institut Paoli-Calmettes, Aix-Marseille University, Marseille, France
- Immunomonitoring Platform, Institut Paoli-Calmettes, Marseille, France
| | - Nathalie Barget
- Tumor Biobank, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, Assistance-Publique Hôpitaux de Paris, APHP, Bondy, France
| | - Alejandro J. Garcia
- Core Cytometry Laboratory, University of California at Los Angeles, Los Angeles, USA
| | - Lucie Del Pozo
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Valérie Bourcier
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Lorraine Blaise
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Véronique Grando-Lemaire
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Gisèle N’Kontchou
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Pierre Nahon
- Inserm UMR 1162, Génomique fonctionnelle des Tumeurs solides, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Olivier Seror
- Inserm UMR 1162, Génomique fonctionnelle des Tumeurs solides, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France
- Radiology Department, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, Assistance-Publique Hôpitaux de Paris, APHP, Bondy, France
| | - Marianne Ziol
- Inserm UMR 1162, Génomique fonctionnelle des Tumeurs solides, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France
- Pathology Department, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, Assistance-Publique Hôpitaux de Paris, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Nathalie Ganne-Carrié
- Inserm UMR 1162, Génomique fonctionnelle des Tumeurs solides, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France
- Liver Unit, Hôpital Jean Verdier, Hôpitaux Universitaires Paris-Seine-Saint-Denis, APHP, Bondy, Unité de Formation et de Recherche Santé Médecine et Biologie humaine, Université Paris 13, Communauté d’Universités et Etablissements Sorbonne Paris Cité, Paris, France
| | - Daniel Olive
- Team Immunity and Cancer, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068, CNRS, UMR7258, Institut Paoli-Calmettes, Aix-Marseille University, Marseille, France
- Immunomonitoring Platform, Institut Paoli-Calmettes, Marseille, France
| |
Collapse
|
19
|
Rothammer A, Sage EK, Werner C, Combs SE, Multhoff G. Increased heat shock protein 70 (Hsp70) serum levels and low NK cell counts after radiotherapy - potential markers for predicting breast cancer recurrence? Radiat Oncol 2019; 14:78. [PMID: 31077235 PMCID: PMC6509784 DOI: 10.1186/s13014-019-1286-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 04/29/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Breast cancer is the most common invasive tumor in women worldwide and the second cause of cancer-related deaths. After breast conserving surgery the tumor bed gets irradiated. Radiation-induced tumor cell death has been found to be associated with the release of damage-associated molecular patterns (DAMPs) including free Hsp70 that can stimulate inflammatory immune responses. Therefore, Hsp70 serum levels as well as the composition of lymphocyte subpopulations have been measured in breast cancer patients during therapy and in the follow-up period as potential predictors for clinical outcome. METHODS The serum of 40 breast cancer patients, who received a breast-conserving surgery and adjuvant radiotherapy (RT) was examined for soluble, free Hsp70 using the R&D Human HSP70 DuoSet and lipHsp70 ELISA. Lymphocyte subpopulations and total lymphocyte counts were analysed by multiparameter flow cytometry in the peripheral blood. Blood samples were collected before (t1), after 30 Gy (t2) and 60 Gy (t3), 6 weeks (t4), 6 months (t5) and 1 year (t6) after RT. Clinical responses were assessed regularly up to 5 years after RT. RESULTS Patients who developed a contralateral recurrence or metastases within the first 2 years after RT had significantly higher serum Hsp70 values at the end of RT (t3; p = 0.03) up to 6 weeks after RT (t4; p = 0.007) compared to patients who either remained disease-free or developed a secondary endometrial carcinoma. Clinicopathological parameters such as age, tumor size, grading and TNM-stage of the resected tumors, adjuvant chemotherapy and irradiation dose did not affect serum Hsp70 levels. Elevated free Hsp70 levels might be indicative for a chronic inflammatory response which could support tumor recurrence. Lymphocyte subpopulation analysis revealed lower NK cell counts after RT in recurrence/metastases patients as compared to disease-free patients. In contrast, no significant changes were observed in the proportion of T and B cells. CONCLUSION Longitudinal elevated serum levels of free Hsp70 up to 6 weeks after RT and dropping NK cell counts might be predictive for an unfavourable prognosis in patients with breast cancer.
Collapse
Affiliation(s)
- Anna Rothammer
- Center for Translational Cancer research (TranslaTUM), Radiation Immuno-Oncology Group, Technical University of Munich (TUM), School of Medicine, Klinikum rechts der Isar, Einsteinstr. 25, 81675, Munich, Germany
| | - Eva K Sage
- Department of Radiation Oncology, Technical University of Munich (TUM), School of Medicine, Klinikum rechts der Isar TUM, Munich, Germany
| | - Caroline Werner
- Center for Translational Cancer research (TranslaTUM), Radiation Immuno-Oncology Group, Technical University of Munich (TUM), School of Medicine, Klinikum rechts der Isar, Einsteinstr. 25, 81675, Munich, Germany
| | - Stephanie E Combs
- Department of Radiation Oncology, Technical University of Munich (TUM), School of Medicine, Klinikum rechts der Isar TUM, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), partner site, Munich, Germany.,Institute of Radiation Medicine (IRM), Helmholtz Zentrum München, Oberschleißheim, Germany
| | - Gabriele Multhoff
- Center for Translational Cancer research (TranslaTUM), Radiation Immuno-Oncology Group, Technical University of Munich (TUM), School of Medicine, Klinikum rechts der Isar, Einsteinstr. 25, 81675, Munich, Germany. .,Department of Radiation Oncology, Technical University of Munich (TUM), School of Medicine, Klinikum rechts der Isar TUM, Munich, Germany.
| |
Collapse
|
20
|
Hakobyan G, Davtyan H, Harutyunyan K, Alexanyan K, Amirkhanyan Y, Gharibyan AL, Asatryan L, Tadevosyan Y. Similarities in Blood Mononuclear Cell Membrane Phospholipid Profiles During Malignancy. Med Sci (Basel) 2018; 6:medsci6040105. [PMID: 30477187 PMCID: PMC6313534 DOI: 10.3390/medsci6040105] [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: 10/23/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 11/16/2022] Open
Abstract
Phospholipids (PLs), key elements of cellular membranes, are regulated reciprocally with membrane proteins and can act as sensors for alterations in physiological or pathological states of cells including initiation and development of cancer. On the other hand, peripheral blood mononuclear cells (MNCs) play an important role in antitumor immune response by reacting to cancerous modifications in distant organs. In the current study, we tested the hypothesis that tumor initiation and development are reflected in the alteration pattern of the MNC PL component. We analyzed MNC membrane PL fractions in samples from healthy individuals and from patients with diverse types of cancers to reveal possible alterations induced by malignancy. Compared to healthy controls, the cancer samples demonstrated shifts in several membrane PL profiles. In particular, when analyzing cancer data pooled together, there were significantly higher levels in lysophosphatidylcholine, phosphatidylcholine, and phosphatidylethanolamine fractions, and significantly lower quantities in phosphatidylinositol, phosphatidylserine, and phosphatidic acid fractions in cancer samples compared to controls. The levels of sphingomyelins and diphosphatidylglycerols were relatively unaffected. Most of the differences in PLs were sustained during the analysis of individual cancers such as breast cancer and chronic lymphocytic leukemia. Our findings suggest the presence of a common pattern of changes in MNC PLs during malignancy.
Collapse
Affiliation(s)
- Gohar Hakobyan
- Laboratory of Regulation of Cellular Activity, Institute of Molecular Biology, National Academy of Sciences, 0014 Yerevan, Armenia.
| | - Hasmik Davtyan
- Laboratory of Regulation of Cellular Activity, Institute of Molecular Biology, National Academy of Sciences, 0014 Yerevan, Armenia.
| | - Kristine Harutyunyan
- Laboratory of Regulation of Cellular Activity, Institute of Molecular Biology, National Academy of Sciences, 0014 Yerevan, Armenia.
| | - Knarik Alexanyan
- Center of Oncology after V. Fanarjyan, Ministry of Health RA, 0052 Yerevan, Armenia.
| | | | - Anna L Gharibyan
- Department of Medical Biochemistry and Biophysics, Umeå University, SE-901 87 Umeå, Sweden.
| | - Liana Asatryan
- School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA.
| | - Yuri Tadevosyan
- Laboratory of Regulation of Cellular Activity, Institute of Molecular Biology, National Academy of Sciences, 0014 Yerevan, Armenia.
| |
Collapse
|
21
|
Ellsworth SG. Field size effects on the risk and severity of treatment-induced lymphopenia in patients undergoing radiation therapy for solid tumors. Adv Radiat Oncol 2018; 3:512-519. [PMID: 30370350 PMCID: PMC6200885 DOI: 10.1016/j.adro.2018.08.014] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/09/2018] [Accepted: 08/10/2018] [Indexed: 12/28/2022] Open
Abstract
Purpose Radiation-induced lymphopenia (RIL) is the result of direct toxicity to circulating lymphocytes as they traverse the irradiated field, occurs in 40% to 70% of patients who undergo conventional external beam radiation therapy, and is associated with worse outcomes in multiple solid tumors. As immunotherapy strategies evolve, a better understanding of radiation's effects on the immune system is needed in order to develop rational methods of combining RT with immunotherapy. Methods and materials This paper is a review of the available literature on the clinical significance and dosimetric predictors of radiation-induced toxicity to the immune system. Results An association between severe RIL and inferior survival has been described in multiple solid tumors, including glioma, lung cancer, and pancreatic cancer. RIL risk is correlated with field size, dose per fraction, and fraction number. SBRT and proton therapy techniques are associated with lower RIL risk. Conclusions The immune system should be considered an organ at risk during RT, and absolute lymphocyte count is an important biomarker of RT-induced immunotoxicity. Radiation dose and technique affect the risk and severity of RIL. Further research is needed to accurately characterize RT-induced immunotoxicity and develop strategies to prevent or mitigate this clinically significant side effect.
Collapse
Affiliation(s)
- Susannah G Ellsworth
- Radiation Oncology, Indiana University School of Medicine, Indianapolis, Indiana
| |
Collapse
|
22
|
Mondlane G, Ureba A, Gubanski M, Lind PA, Siegbahn A. Estimation of the risk for radiation-induced liver disease following photon- or proton-beam radiosurgery of liver metastases. Radiat Oncol 2018; 13:206. [PMID: 30348194 PMCID: PMC6196431 DOI: 10.1186/s13014-018-1151-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 10/04/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Radiotherapy of liver metastases is commonly being performed with photon-beam based stereotactic body radiation therapy (SBRT). The high risk for radiation-induced liver disease (RILD) is a limiting factor in these treatments. The use of proton-beam based SBRT could potentially improve the sparing of the healthy part of the liver. The aim of this study was to use estimations of normal tissue complication probability (NTCP) to identify liver-metastases patients that could benefit from being treated with intensity-modulated proton therapy (IMPT), based on the reduction of the risk for RILD. METHODS Ten liver metastases patients, previously treated with photon-beam based SBRT, were retrospectively planned with IMPT. A CTV-based robust optimisation (accounting for setup and range uncertainties), combined with a PTV-based conventional optimisation, was performed. A robustness criterion was defined for the CTV (V95% > 98% for at least 10 of the 12 simulated scenarios). The NTCP was estimated for different endpoints using the Lyman-Kutcher-Burman model. The ΔNTCP (NTCPIMPT - NTCPSBRT) for RILD was registered for each patient. The patients for which the NTCP (RILD) < 5% were also identified. A generic relative biological effectiveness of 1.1 was assumed for the proton beams. RESULTS For all patients, the objectives set for the PTV and the robustness criterion set for the CTV were fulfilled with the IMPT plans. An improved sparing of the healthy part of the liver, right kidney, lungs, spinal cord and the skin was achieved with the IMPT plans, compared to the SBRT plans. Mean liver doses larger than the threshold value of 32 Gy led to NTCP values for RILD exceeding 5% (7 patients with SBRT and 3 patients with the IMPT plans). ΔNTCP values (RILD) ranging between - 98% and - 17% (7 patients) and between 0 and 2% (3 patients), were calculated. CONCLUSIONS In this study, liver metastases patients that could benefit from being treated with IMPT, based on the NTCP reductions, were identified. The clinical implementation of such a model-based approach to select liver metastases patients to proton therapy needs to be made with caution while considering the uncertainties involved in the NTCP estimations.
Collapse
Affiliation(s)
- Gracinda Mondlane
- Department of Physics – Medical Radiation Physics, Stockholm University, Stockholm, Sweden
- Department of Physics, Universidade Eduardo Mondlane, Maputo, Mozambique
| | - Ana Ureba
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Michael Gubanski
- Department of Oncology and Pathology, Karolinska University Hospital, Stockholm, Sweden
| | - P A Lind
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology, Södersjukhuset, Stockholm, Sweden
| | - Albert Siegbahn
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology, Södersjukhuset, Stockholm, Sweden
| |
Collapse
|
23
|
Stereotactic Ablative Radiation Therapy Induces Systemic Differences in Peripheral Blood Immunophenotype Dependent on Irradiated Site. Int J Radiat Oncol Biol Phys 2018; 101:1259-1270. [PMID: 29891204 DOI: 10.1016/j.ijrobp.2018.04.038] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 04/07/2018] [Accepted: 04/16/2018] [Indexed: 01/13/2023]
Abstract
PURPOSE Despite the strong interest in combining stereotactic ablative radiation therapy (SAR) with immunotherapy, limited data characterizing the systemic immune response after SAR are available. We hypothesized that the systemic immune response to SAR would differ by irradiated site owing to inherent differences in the microenvironment of various organs. METHODS AND MATERIALS Patients receiving SAR to any organ underwent prospective blood banking before and 1 to 2 weeks after SAR. Peripheral blood mononuclear cells (PBMCs) and serum were isolated. PBMCs were stained with fluorophore-conjugated antibodies against T and natural killer (NK) cell markers. Cells were interrogated by flow cytometry, and the results were analyzed using FlowJo software. Serum cytokine and chemokine levels were measured using Luminex. We analyzed the changes from before to after therapy using paired t tests or 1-way analysis of variance (ANOVA) with Bonferroni's post-test. RESULTS A total of 31 patients had evaluable PBMCs for flow cytometry and 37 had evaluable serum samples for Luminex analysis. The total number of NK cells and cytotoxic (CD56dimCD16+) NK cells decreased (P = .02) and T-cell immunoglobulin- and mucin domain-containing molecule-3-positive (TIM3+) NK cells increased (P = .04) after SAR to parenchymal sites (lung and liver) but not to bone or brain. The total memory CD4+ T cells, activated inducible co-stimulator-positive and CD25+CD4+ memory T cells, and activated CD25+CD8+ memory T cells increased after SAR to parenchymal sites but not bone or brain. The circulating levels of tumor necrosis factor-α (P = .04) and multiple chemokines, including RANTES (P = .04), decreased after SAR to parenchymal sites but not bone or brain. CONCLUSIONS Our data suggest SAR to parenchymal sites induces systemic immune changes, including a decrease in total and cytotoxic NK cells, an increase in TIM3+ NK cells, and an increase in activated memory CD4+ and CD8+ T cells. SAR to nonparenchymal sites did not induce these changes. By comparing the immune response after radiation to different organs, our data suggest SAR induces systemic immunologic changes that are dependent on the irradiated site.
Collapse
|
24
|
Tchelebi L, Zaorsky N, Mackley H. Stereotactic Body Radiation Therapy in the Management of Upper GI Malignancies. Biomedicines 2018; 6:biomedicines6010007. [PMID: 29301352 PMCID: PMC5874664 DOI: 10.3390/biomedicines6010007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 12/21/2017] [Accepted: 12/23/2017] [Indexed: 01/12/2023] Open
Abstract
The role of external beam radiation therapy (EBRT) in the management of upper gastrointestinal malignancies is constantly evolving. As radiation therapy techniques improve and are able to deliver more ablative doses of radiotherapy while sparing healthy tissue, radiation can be applied to a wider range of clinical scenarios. Stereotactic body radiation therapy (SBRT) allows a high dose of radiation to be delivered to a highly conformal treatment volume in a short amount of time. Another potential advantage of SBRT is its ability to increase tumor immunogenicity, while also having less of an immunosuppressive effect on the patient, as compared to conventionally fractionated radiation therapy. In so doing, SBRT may potentiate the effects of immune therapy when the two treatments are combined, thus improving therapeutic outcomes. This article provides an overview of the role of SBRT in the management of upper gastrointestinal GI malignancies and the emerging data on immune biomarkers and SBRT, with a focus on pancreatic and liver cancer.
Collapse
Affiliation(s)
- Leila Tchelebi
- Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA.
| | - Nicholas Zaorsky
- Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA.
| | - Heath Mackley
- Penn State Health Milton S. Hershey Medical Center, Hershey, PA 17033, USA.
| |
Collapse
|