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Yao L, Li Y, Li T, Fu W, Chen G, Li Q, Tang X, Li J, Xiong Y. What Are the Recurrence Rates, Complications, and Functional Outcomes After Multiportal Arthroscopic Synovectomy for Patients With Knee Diffuse-type Tenosynovial Giant-cell Tumors? Clin Orthop Relat Res 2024; 482:1218-1229. [PMID: 38153106 PMCID: PMC11219179 DOI: 10.1097/corr.0000000000002934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 10/27/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND Diffuse-type tenosynovial giant-cell tumor (D-TGCT), formerly known as pigmented villonodular synovitis, is a rare, locally aggressive, invasive soft tissue tumor that primarily occurs in the knee. Surgical excision is the main treatment option, but there is a high recurrence rate. Arthroscopic surgical techniques are emphasized because they are less traumatic and offer faster postoperative recovery, but detailed reports on arthroscopic techniques and outcomes of D-TGCT in large cohorts are still lacking. QUESTIONS/PURPOSES (1) What is the recurrence rate of knee D-TGCT after multiportal arthroscopic synovectomy? (2) What are the complications, knee ROM, pain score, and patient-reported outcomes for patients, and do they differ between patients with and without recurrence? (3) What factors are associated with recurrence after arthroscopic treatment in patients with D-TGCT? METHODS In this single-center, retrospective study conducted between January 2010 and April 2021, we treated 295 patients with knee D-TGCTs. We considered patients undergoing initial surgical treatment with multiportal arthroscopic synovectomy as potentially eligible. Based on that, 27% (81 of 295) of patients were excluded because of recurrence after synovectomy performed at another institution. Of the 214 patients who met the inclusion criteria, 17% (36 of 214) were lost to follow-up, leaving 83% (178 of 214) of patients in the analysis. Twenty-eight percent (50 of 178) of patients were men and 72% (128 of 178) were women, with a median (range) age of 36 years (7 to 69). The median follow-up duration was 80 months (26 to 149). All patients underwent multiportal (anterior and posterior approaches) arthroscopic synovectomy, and all surgical protocols were determined by discussion among four surgeons after preoperative MRI. A combined open posterior incision was used for patients with lesions that invaded or surrounded the blood vessels and nerves or invaded the muscle space extraarticularly. Standard postoperative adjuvant radiotherapy was recommended for all patients with D-TGCT who had extraarticular and posterior compartment invasion; for patients with only anterior compartment invasion, radiotherapy was recommended for severe cases as assessed by the surgeons and radiologists based on preoperative MRI and intraoperative descriptions. Postoperative recurrence at 5 years was calculated using a Kaplan-Meier survivorship estimator. The WOMAC score (0 to 96, with higher scores representing a worse outcome; minimum clinically important difference [MCID] 8.5), the Lysholm knee score (0 to 100, with higher scores being better knee function; MCID 25.4), the VAS for pain (0 to 10, with higher scores representing more pain; MCID 2.46), and knee ROM were used to evaluate functional outcomes. Because we did not have preoperative patient-reported outcomes scores, we present data on the proportion of patients who achieved the patient-acceptable symptom state (PASS) for each of those outcome metrics, which were 14.6 of 96 points on the WOMAC, 52.5 of 100 points on the Lysholm, and 2.32 of 10 points on the VAS. RESULTS The symptomatic or radiographically documented recurrence at 5 years was 12% (95% confidence interval [CI] 7% to 17%) using the Kaplan-Meier estimator, with a mean recurrence time of 33 ± 19 months. Of these, three were asymptomatic recurrences found during regular MRI reviews, and the remaining 19 underwent repeat surgery. There was one intraoperative complication (vascular injury) with no effect on postoperative limb function and eight patients with postoperative joint stiffness, seven of whom improved with prolonged rehabilitation and one with manipulation under anesthesia. No postradiotherapy complications were found. The proportion of patients who achieved the preestablished PASS was 99% (176 of 178) for the VAS pain score, 97% (173 of 178) for the WOMAC score, and 100% (178 of 178) for the Lysholm score. A lower percentage of patients with recurrence achieved the PASS for WOMAC score than patients without recurrence (86% [19] versus 99% [154], OR 0.08 [95% CI 0.01 to 0.52]; p = 0.01), whereas no difference was found in the percentage of VAS score (95% [21] versus 99% [155], OR 0.14 [95% CI 0.01 to 2.25]; p = 0.23) or Lysholm score (100% [22] versus 100% [156], OR 1 [95% CI 1 to 1]; p = 0.99). Moreover, patients in the recurrence group showed worse knee flexion (median 135° [100° to 135°] versus median 135° [80° to 135°]; difference of medians 0°; p = 0.03), worse WOMAC score (median 3.5 [0 to 19] versus median 1 [0 to 29]; difference of medians 2.5; p = 0.01), and higher VAS pain score (median 1 [0 to 4] versus median 0 [0 to 4]; difference of medians 1; p < 0.01) than those in the nonrecurrence group, although no differences reached the MCID. No factors were associated with D-TGCT recurrence, including the use of postoperative radiotherapy, surgical technique, and invasion extent. CONCLUSION This single-center, large-cohort retrospective study confirmed that multiportal arthroscopic surgery can be used to treat knee D-TGCTs with a low recurrence rate, few complications, and satisfactory postoperative outcomes. Surgeons should conduct a thorough preoperative evaluation, meticulous arthroscopic synovectomy, and regular postoperative follow-up when treating patients with D-TGCT to reduce postoperative recurrence. Because the available evidence does not appear to fully support the use of postoperative adjuvant radiotherapy in all patients with D-TGCTs and our study design is inadequate to resolve this controversial issue, future studies should look for more appropriate indications for radiotherapy, such as planning based on a more precise classification of lesion invasion. LEVEL OF EVIDENCE Level III, therapeutic study.
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Affiliation(s)
- Lei Yao
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yinghao Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Tao Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Weili Fu
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Gang Chen
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Qi Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Xin Tang
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Jian Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yan Xiong
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
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Rungsiprakarn P, Ryan AL, Wong DD, Luo M, Kazahaya K, Arkader A, Lau LMS, Ajuyah P, Rudzinski E, Kreiger PA, Roebuck DJ, Surrey LF, Foo TSY. Keratin-Positive Giant Cell Tumor of Bone and Soft Tissue With HMGA2::NCOR2 Fusion in Children Under 10 With Response to Imatinib Therapy: A Case Series. JCO Precis Oncol 2024; 8:e2300659. [PMID: 38935896 DOI: 10.1200/po.23.00659] [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: 12/06/2023] [Revised: 04/03/2024] [Accepted: 04/25/2024] [Indexed: 06/29/2024] Open
Abstract
HMGA2::NCOR2 keratin-positive giant cell tumors in children with response to imatinib in an infant.
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Affiliation(s)
- Phassawan Rungsiprakarn
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Anne L Ryan
- Department of Hematology, Oncology and Bone Marrow Transplant, Perth Children's Hospital, Nedlands, Australia
- Telethon Kids Insitute, University of Western Australia, Nedlands, Australia
| | - Daniel D Wong
- PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Australia
| | - Minjie Luo
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Ken Kazahaya
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Otorhinolaryngology/Head and Neck Surgery, University of Pennsylvania, Philadelphia, PA
| | - Alexandre Arkader
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Division of Orthopedic Surgery, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Loretta M S Lau
- Children's Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington, Australia
- School of Clinical Medicine, UNSW Medicine & Health, UNSW Sydney, Kensington, Australia
| | | | - Erin Rudzinski
- Department of Laboratories, Seattle Children's Hospital, Seattle, WA
- Department of Laboratory Medicine and Pathology, University of Washington Medical Center, Seattle, WA
| | - Portia A Kreiger
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Derek J Roebuck
- Department of Medical Imaging, Perth Children's Hospital, Nedlands, Australia
- Division of Pediatrics, Medical School, University of Western Australia, Crawley, Australia
| | - Lea F Surrey
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Tiffany S Y Foo
- PathWest Laboratory Medicine, Perth Children's Hospital, Nedlands, WA, Australia
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Maleddu A, Zhu J, Clay MR, Wilky BA. Current therapies and future prospective for locally aggressive mesenchymal tumors. Front Oncol 2023; 13:1160239. [PMID: 37546427 PMCID: PMC10401592 DOI: 10.3389/fonc.2023.1160239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 05/11/2023] [Indexed: 08/08/2023] Open
Abstract
Locally aggressive mesenchymal tumors comprise a heterogeneous group of soft tissue and bone tumors with intermediate histology, incompletely understood biology, and highly variable natural history. Despite having a limited to absent ability to metastasize and excellent survival prognosis, locally aggressive mesenchymal tumors can be symptomatic, require prolonged and repeat treatments including surgery and chemotherapy, and can severely impact patients' quality of life. The management of locally aggressive tumors has evolved over the years with a focus on minimizing morbid treatments. Extensive oncologic surgeries and radiation are pillars of care for high grade sarcomas, however, play a more limited role in management of locally aggressive mesenchymal tumors, due to propensity for local recurrence despite resection, and the risk of transformation to a higher-grade entity following radiation. Patients should ideally be evaluated in specialized sarcoma centers that can coordinate complex multimodal decision-making, taking into consideration the individual patient's clinical presentation and history, as well as any available prognostic factors into customizing therapy. In this review, we aim to discuss the biology, clinical management, and future treatment frontiers for three representative locally aggressive mesenchymal tumors: desmoid-type fibromatosis (DF), tenosynovial giant cell tumor (TSGCT) and giant cell tumor of bone (GCTB). These entities challenge clinicians with their unpredictable behavior and responses to treatment, and still lack a well-defined standard of care despite recent progress with newly approved or promising experimental drugs.
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Affiliation(s)
- Alessandra Maleddu
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO, United States
| | - Jessica Zhu
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO, United States
| | - Michael Roy Clay
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Breelyn Ann Wilky
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO, United States
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Li SY, Guo YL, Tian JW, Zhang HJ, Li RF, Gong P, Yu ZL. Anti-Tumor Strategies by Harnessing the Phagocytosis of Macrophages. Cancers (Basel) 2023; 15:2717. [PMID: 37345054 DOI: 10.3390/cancers15102717] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 06/23/2023] Open
Abstract
Macrophages are essential for the human body in both physiological and pathological conditions, engulfing undesirable substances and participating in several processes, such as organism growth, immune regulation, and maintenance of homeostasis. Macrophages play an important role in anti-bacterial and anti-tumoral responses. Aberrance in the phagocytosis of macrophages may lead to the development of several diseases, including tumors. Tumor cells can evade the phagocytosis of macrophages, and "educate" macrophages to become pro-tumoral, resulting in the reduced phagocytosis of macrophages. Hence, harnessing the phagocytosis of macrophages is an important approach to bolster the efficacy of anti-tumor treatment. In this review, we elucidated the underlying phagocytosis mechanisms, such as the equilibrium among phagocytic signals, receptors and their respective signaling pathways, macrophage activation, as well as mitochondrial fission. We also reviewed the recent progress in the area of application strategies on the basis of the phagocytosis mechanism, including strategies targeting the phagocytic signals, antibody-dependent cellular phagocytosis (ADCP), and macrophage activators. We also covered recent studies of Chimeric Antigen Receptor Macrophage (CAR-M)-based anti-tumor therapy. Furthermore, we summarized the shortcomings and future applications of each strategy and look into their prospects with the hope of providing future research directions for developing the application of macrophage phagocytosis-promoting therapy.
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Affiliation(s)
- Si-Yuan Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Yong-Lin Guo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Jia-Wen Tian
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - He-Jing Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Rui-Fang Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Ping Gong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
- Department of Anesthesiology, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Zi-Li Yu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
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Kim T, Bui NQ. The Next Frontier in Sarcoma: Molecular Pathways and Associated Targeted Therapies. Cancers (Basel) 2023; 15:cancers15061692. [PMID: 36980578 PMCID: PMC10046114 DOI: 10.3390/cancers15061692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/12/2023] Open
Abstract
Soft tissue sarcomas (STS) are a rare, complex, heterogeneous group of mesenchymal neoplasms with over 150 different histological subtypes. Treatments for this malignancy have been especially challenging due to the heterogeneity of the disease and the modest efficacy of conventional chemotherapy. The next frontier lies in discerning the molecular pathways in which these mesenchymal neoplasms arise, metastasize, and develop drug-resistance, thereby helping guide new therapeutic targets for the treatment of STS. This comprehensive review will discuss the current understanding of tumorigenesis of specific STS subtypes, including oncogenic pathway alterations involved in cell cycle regulation, angiogenesis, NOTCH signaling, and aberrant genetic rearrangements. It will then review current therapies that have been recently developed to target these pathways, including a review of ongoing clinical studies for targeted sarcoma treatment, as well as discuss new potential avenues for therapies against known molecular pathways of sarcomagenesis.
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Bone and soft tissue tumors: clinicoradiologic-pathologic molecular-genetic correlation of novel fusion spindled, targetable-ovoid, giant-cell-rich, and round cell sarcomas. Skeletal Radiol 2023; 52:517-540. [PMID: 36542130 DOI: 10.1007/s00256-022-04244-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND New entities in the classification of bone and soft tissue tumors have been identified by use of advanced molecular-genetic techniques, including next-generation sequencing. Clinicoradiologic and pathologic correlation supports diagnostic classification. METHODS Tumors from four morphologically grouped areas are selected to enhance diagnosis and awareness among the multidisciplinary team. These include select round cell tumors, spindle cell tumors, targetable tyrosine kinase/RAS::MAPK pathway-ovoid (epithelioid to spindled) tumors, and giant-cell-rich tumors of bone and soft tissue. RESULTS Round cell tumors of bone and soft tissue include prototypical Ewing sarcoma, newer sarcomas with BCOR genetic alteration and CIC-rearranged, as well as updates on FUS/EWSR1::NFATc2, an EWSR1 non-ETS tumor that is solid with additional amplified hybridization signal pattern of EWSR1. This FUS/EWSR1::NFATc2 fusion has now been observed in seemingly benign to low-grade intraosseous vascular-rich and simple (unicameral) bone cyst tumors. Select spindle cell tumors of bone and soft tissue include rhabdomyosarcoma with FUS/EWSR1::TFCP2, an intraosseous high-grade spindle cell tumor without matrix. Targetable tyrosine-kinase or RAS::MAPK pathway-tumors of bone and soft tissue include NTRK, ALK, BRAF, RAF1, RET, FGFR1, ABL1, EGFR, PDGFB, and MET with variable ovoid myopericytic to spindled pleomorphic features and reproducible clinicopathologic and radiologic clues to their diagnosis. Giant-cell-rich tumors of bone, joint, and soft tissue are now respectively characterized by H3F3A mutation, CSF1 rearrangement (targetable), and HMGA2::NCOR2 fusion. CONCLUSION This article is an update for radiologists, oncologists, surgeons, and pathologists to recognize these novel ovoid, spindled, giant-cell-rich, and round cell tumors, for optimal diagnostic classification and multidisciplinary team patient care.
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Key Words
- ALK, NTRK, BRAF, RAF1, RET, FGFR1, ABL1, EGFR, MET, PDGFB fusions, tyrosine-kinase inhibitor
- Bone, joint, soft tissue giant cell tumors with H3F3A-mutation, CSF1-rearrangement, HMGA2::NCOR2 fusion
- Clinical, pathology, radiology
- EWSR1, CIC, BCOR, FUS/EWSR1::NFATc2, bone cyst, vascular
- Intraosseous rhabdomyosarcoma EWSR1/FUS::TFCP2
- Novel fusion sarcoma
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Stacchiotti S, Dürr HR, Schaefer IM, Woertler K, Haas R, Trama A, Caraceni A, Bajpai J, Baldi GG, Bernthal N, Blay JY, Boye K, Broto JM, Chen WWT, Dei Tos PA, Desai J, Emhofer S, Eriksson M, Gronchi A, Gelderblom H, Hardes J, Hartmann W, Healey J, Italiano A, Jones RL, Kawai A, Leithner A, Loong H, Mascard E, Morosi C, Otten N, Palmerini E, Patel SR, Reichardt P, Rubin B, Rutkowski P, Sangalli C, Schuster K, Seddon BM, Shkodra M, Staals EL, Tap W, van de Rijn M, van Langevelde K, Vanhoenacker FMM, Wagner A, Wiltink L, Stern S, Van de Sande VM, Bauer S. Best clinical management of tenosynovial giant cell tumour (TGCT): A consensus paper from the community of experts. Cancer Treat Rev 2023; 112:102491. [PMID: 36502615 DOI: 10.1016/j.ctrv.2022.102491] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022]
Abstract
Tenosynovial giant cell tumour (TGCT) is a rare, locally aggressive, mesenchymal tumor arising from the joints, bursa and tendon sheaths. TGCT comprises a nodular- and a diffuse-type, with the former exhibiting mostly indolent course and the latter a locally aggressive behavior. Although usually not life-threatening, TGCT may cause chronic pain and adversely impact function and quality of life (QoL). CSFR1 inhibitors are effective with benefit on symptoms and QoL but are not available in most countries. The degree of uncertainty in selecting the most appropriate therapy and the lack of guidelines on the clinical management of TGCT make the adoption of new treatments inconsistent across the world, with suboptimal outcomes for patients. A global consensus meeting was organized in June 2022, involving experts from several disciplines and patient representatives from SPAGN to define the best evidence-based practice for the optimal approach to TGCT and generate the recommendations presented herein.
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Affiliation(s)
- Silvia Stacchiotti
- Department of cancer medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy.
| | - Hans Roland Dürr
- Department of Orthopaedics and Trauma Surgery, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Inga-Marie Schaefer
- Department of Pathology, Harvard Medical School, Brigham and Women's Hospital, Boston, USA
| | - Klaus Woertler
- Department of Radiology, Technische Universität München, Munich, Germany
| | - Rick Haas
- Department of Radiotherapy, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Annalisa Trama
- Evaluative Epidemiology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Augusto Caraceni
- High-Complexity Unit of Palliative Care, Pain Therapy and Rehabilitation, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Jyoti Bajpai
- Department of Medical Oncology, Homi Bhabha National Institute, Mumbai, India
| | | | | | - Jean-Yves Blay
- Department of Medical Oncology, Université Centre Léon Bérard, Lyon, France
| | - Kjetil Boye
- Department of Medical Oncology, Oslo University Hospital, Oslo, Norway
| | - Javier-Martin Broto
- Oncology Department, Fundación Jiménez Díaz University Hospital, Madrid, Spain
| | - Wei-Wu Tom Chen
- Department of Medical Oncology, National Taiwan University Hospital and Cancer Center, Taiwan
| | | | - Jayesh Desai
- Peter MacCallum Cancer Centre/Royal Melbourne Hospital, Melbourne, Australia
| | | | - Mikael Eriksson
- Department of Medical Oncology, LUCC - Lund University Cancer Centre, Lund, Sweden
| | - Alessandro Gronchi
- Department of Surgery, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Jendrik Hardes
- Department of Orthopaedic Oncology, Uniklinik Essen, Essen, Germany
| | - Wolfgang Hartmann
- Gerhard-Domagk-Institute for Pathology, Uniklinik Münster, Münster, Germany
| | - John Healey
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York City, USA
| | - Antoine Italiano
- Department of Medical Oncology, Institut Bergonié, Bordeaux, France
| | - Robin L Jones
- Sarcoma Unit, The Royal Marsden, London, United Kingdom
| | - Akira Kawai
- Department of Muscoloskeletal Oncology, National Cancer Center Hospital (NCCH), Tokyo, Japan
| | - Andreas Leithner
- Department of Orthopaedics and Trauma, Medizinische Universität Graz, Graz, Austria
| | - Herbert Loong
- Department of Clinical Oncology, The Chinese University of Hong Kong, Hong Kong
| | - Eric Mascard
- Department of Paediatric Orthopaedic Surgery, Clinique Arago, Paris, France
| | - Carlo Morosi
- Department of Radiology, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | | | - Emanuela Palmerini
- Department of Osteoncology, Bone and Soft Tissue Sarcomas and Innovative Therapies, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Peter Reichardt
- Department of Medical Oncology, Helios Klinikum Berlin-Buch, Berlin, Germany
| | - Brian Rubin
- Robert J. Tomsich Pathology and Laboratory Medicine Institute and Department of Cancer Biology, Cleveland Clinic, Cleveland, USA
| | - Piotr Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Claudia Sangalli
- Department of Radiation Oncology, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | | | - Beatrice M Seddon
- Department of Oncology, University College Hospital London, London, United Kingdom
| | - Morena Shkodra
- High-Complexity Unit of Palliative Care, Pain Therapy and Rehabilitation, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Eric L Staals
- Department of Orthopaedic Surgery, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - William Tap
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York City, USA
| | | | | | | | - Andrew Wagner
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, USA
| | - Lisette Wiltink
- Department of Radiotherapy, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Sydney Stern
- Patient Representative, Life Raft Group, and Pharmacokinetics, University of Maryland Baltimore, USA
| | | | - Sebastian Bauer
- Department of Medical Oncology, Sarcoma Center, Uniklinik Essen, Essen, Germany
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