E. Shimada , M. Nakagawa , M. Endo , N. Yokoyama , A. Nabeshima , T. Fujiwara , A. Kawai , Y. Nakashima
{"title":"超罕见肉瘤的景观:一项全国性的流行病学和预后研究","authors":"E. Shimada , M. Nakagawa , M. Endo , N. Yokoyama , A. Nabeshima , T. Fujiwara , A. Kawai , Y. Nakashima","doi":"10.1016/j.esmoop.2025.105097","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>The concept of ‘ultra-rare sarcoma’ was established to raise awareness of the clinical challenges resulting from its rarity. Given the novelty of this classification and the consequent paucity of data, this study aimed to investigate the epidemiology and prognosis of ultra-rare sarcomas.</div></div><div><h3>Design</h3><div>We analyzed data from the Bone and Soft Tissue Tumor Registry in Japan from 2001 to 2019, comparing ultra-rare and non-ultra-rare sarcomas. To assess the prognostic impact of ultra-rare sarcomas, we used Kaplan–Meier survival analysis with propensity score matching, multivariate analysis, and a machine learning technique known as random survival forest.</div></div><div><h3>Results</h3><div>Among the 22 821 patients analyzed, ultra-rare sarcomas accounted for 18.9% of the cases. Ultra-rare bone sarcomas were older than non-ultra-rare bone sarcomas (mean age: 57.6 versus 39.2 years, <em>P</em> < 0.001), while ultra-rare soft tissue sarcomas appeared in younger patients (mean age: 49.4 versus 62.2 years, <em>P</em> < 0.001). For patients >80 years old with bone sarcomas and those <20 years old with soft tissue sarcomas, ultra-rare sarcomas constituted approximately half of the cases. Survival analysis indicated that ultra-rare bone sarcomas were associated with longer survival (<em>P</em> = 0.022), whereas ultra-rare soft tissue sarcomas showed no significant difference in overall survival (<em>P</em> = 0.052). When stratified by age, however, patients <40 years old with ultra-rare soft tissue sarcomas had shorter survival (<em>P</em> < 0.001). Multivariate analysis indicated hazard ratios of 0.73 for ultra-rare bone and 1.25 for ultra-rare soft tissue sarcomas. Random survival forest showed that the importance of ultra-rare sarcomas was relatively low compared with other parameters.</div></div><div><h3>Conclusion</h3><div>Ultra-rare sarcomas are more common among older bone sarcoma patients and younger soft tissue sarcoma patients. Young patients with ultra-rare soft tissue sarcomas have a significantly worse prognosis. Overall, while ultra-rare sarcomas have a generally minor impact on prognosis, their effects are more pronounced in specific age groups.</div></div>","PeriodicalId":11877,"journal":{"name":"ESMO Open","volume":"10 5","pages":"Article 105097"},"PeriodicalIF":7.1000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Landscape of ultra-rare sarcomas: a nationwide study for epidemiology and prognosis\",\"authors\":\"E. Shimada , M. Nakagawa , M. Endo , N. Yokoyama , A. Nabeshima , T. Fujiwara , A. Kawai , Y. Nakashima\",\"doi\":\"10.1016/j.esmoop.2025.105097\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><div>The concept of ‘ultra-rare sarcoma’ was established to raise awareness of the clinical challenges resulting from its rarity. Given the novelty of this classification and the consequent paucity of data, this study aimed to investigate the epidemiology and prognosis of ultra-rare sarcomas.</div></div><div><h3>Design</h3><div>We analyzed data from the Bone and Soft Tissue Tumor Registry in Japan from 2001 to 2019, comparing ultra-rare and non-ultra-rare sarcomas. To assess the prognostic impact of ultra-rare sarcomas, we used Kaplan–Meier survival analysis with propensity score matching, multivariate analysis, and a machine learning technique known as random survival forest.</div></div><div><h3>Results</h3><div>Among the 22 821 patients analyzed, ultra-rare sarcomas accounted for 18.9% of the cases. Ultra-rare bone sarcomas were older than non-ultra-rare bone sarcomas (mean age: 57.6 versus 39.2 years, <em>P</em> < 0.001), while ultra-rare soft tissue sarcomas appeared in younger patients (mean age: 49.4 versus 62.2 years, <em>P</em> < 0.001). For patients >80 years old with bone sarcomas and those <20 years old with soft tissue sarcomas, ultra-rare sarcomas constituted approximately half of the cases. Survival analysis indicated that ultra-rare bone sarcomas were associated with longer survival (<em>P</em> = 0.022), whereas ultra-rare soft tissue sarcomas showed no significant difference in overall survival (<em>P</em> = 0.052). When stratified by age, however, patients <40 years old with ultra-rare soft tissue sarcomas had shorter survival (<em>P</em> < 0.001). Multivariate analysis indicated hazard ratios of 0.73 for ultra-rare bone and 1.25 for ultra-rare soft tissue sarcomas. Random survival forest showed that the importance of ultra-rare sarcomas was relatively low compared with other parameters.</div></div><div><h3>Conclusion</h3><div>Ultra-rare sarcomas are more common among older bone sarcoma patients and younger soft tissue sarcoma patients. Young patients with ultra-rare soft tissue sarcomas have a significantly worse prognosis. Overall, while ultra-rare sarcomas have a generally minor impact on prognosis, their effects are more pronounced in specific age groups.</div></div>\",\"PeriodicalId\":11877,\"journal\":{\"name\":\"ESMO Open\",\"volume\":\"10 5\",\"pages\":\"Article 105097\"},\"PeriodicalIF\":7.1000,\"publicationDate\":\"2025-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ESMO Open\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2059702925009664\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ONCOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ESMO Open","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2059702925009664","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ONCOLOGY","Score":null,"Total":0}
Landscape of ultra-rare sarcomas: a nationwide study for epidemiology and prognosis
Background
The concept of ‘ultra-rare sarcoma’ was established to raise awareness of the clinical challenges resulting from its rarity. Given the novelty of this classification and the consequent paucity of data, this study aimed to investigate the epidemiology and prognosis of ultra-rare sarcomas.
Design
We analyzed data from the Bone and Soft Tissue Tumor Registry in Japan from 2001 to 2019, comparing ultra-rare and non-ultra-rare sarcomas. To assess the prognostic impact of ultra-rare sarcomas, we used Kaplan–Meier survival analysis with propensity score matching, multivariate analysis, and a machine learning technique known as random survival forest.
Results
Among the 22 821 patients analyzed, ultra-rare sarcomas accounted for 18.9% of the cases. Ultra-rare bone sarcomas were older than non-ultra-rare bone sarcomas (mean age: 57.6 versus 39.2 years, P < 0.001), while ultra-rare soft tissue sarcomas appeared in younger patients (mean age: 49.4 versus 62.2 years, P < 0.001). For patients >80 years old with bone sarcomas and those <20 years old with soft tissue sarcomas, ultra-rare sarcomas constituted approximately half of the cases. Survival analysis indicated that ultra-rare bone sarcomas were associated with longer survival (P = 0.022), whereas ultra-rare soft tissue sarcomas showed no significant difference in overall survival (P = 0.052). When stratified by age, however, patients <40 years old with ultra-rare soft tissue sarcomas had shorter survival (P < 0.001). Multivariate analysis indicated hazard ratios of 0.73 for ultra-rare bone and 1.25 for ultra-rare soft tissue sarcomas. Random survival forest showed that the importance of ultra-rare sarcomas was relatively low compared with other parameters.
Conclusion
Ultra-rare sarcomas are more common among older bone sarcoma patients and younger soft tissue sarcoma patients. Young patients with ultra-rare soft tissue sarcomas have a significantly worse prognosis. Overall, while ultra-rare sarcomas have a generally minor impact on prognosis, their effects are more pronounced in specific age groups.
期刊介绍:
ESMO Open is the online-only, open access journal of the European Society for Medical Oncology (ESMO). It is a peer-reviewed publication dedicated to sharing high-quality medical research and educational materials from various fields of oncology. The journal specifically focuses on showcasing innovative clinical and translational cancer research.
ESMO Open aims to publish a wide range of research articles covering all aspects of oncology, including experimental studies, translational research, diagnostic advancements, and therapeutic approaches. The content of the journal includes original research articles, insightful reviews, thought-provoking editorials, and correspondence. Moreover, the journal warmly welcomes the submission of phase I trials and meta-analyses. It also showcases reviews from significant ESMO conferences and meetings, as well as publishes important position statements on behalf of ESMO.
Overall, ESMO Open offers a platform for scientists, clinicians, and researchers in the field of oncology to share their valuable insights and contribute to advancing the understanding and treatment of cancer. The journal serves as a source of up-to-date information and fosters collaboration within the oncology community.