ArticleGenes, chromosomes & cancer2025
Clinicopathologic and Molecular Analysis of Primary Angiosarcoma of Bone-A Single Institution Experience.
Article in Genes, chromosomes & cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors.
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Abstract
purposeBone angiosarcoma (B-AS) is an exceedingly rare and aggressive vascular neoplasm, with limited therapeutic options and poor outcomes. Unlike the more prevalent clinical subsets (breast, head and neck), the pathogenesis of B-AS remains poorly defined, with no targeted therapeutic strategies available. Moreover, the often delays in diagnosis, either radiographically or pathologically, as well as the common multifocal presentation, further impact the feasibility of surgical management, contributing to lower survival rates. In this study, we investigated the clinicopathologic and molecular characteristics of B-AS to better define prognostic factors influencing outcomes. PATIENTS AND
methodsThis retrospective study analyzed 22 cases of B-AS managed at a single tertiary cancer center from 1998 to 2024. Clinical and pathologic data were extracted through chart reviews and re-assessment of radiology and histology. Molecular characterization was performed in a subset using targeted next-generation sequencing (NGS).
resultsThe cohort included 14 males and eight females (median age: 64.5 years), with tumors mostly involving femur, pelvis, and spine. Twelve (55%) patients presented with disease limited to the bone, either solitary or multifocal, while 10 (45%) patients presented in addition with extraskeletal metastases at diagnosis. The skeletal distribution included six (27%) solitary bone lesions, with the remaining 16 being multifocal (four contiguous, twelve disseminated). A surgical procedure for the bone lesions was performed in 73% of cases, varying from intralesional curetting to limb amputation. Half of the patients received radiation, and 73% chemotherapy. By molecular profiling, all tumors showed a low tumor mutational burden (TMB), with the most frequent alterations being KDR mutations and MYC amplifications. Age and chemotherapy were significantly associated with improved overall survival (OS) (p < 0.005); however, the 3-year OS was only 30%.
conclusionDespite the multidisciplinary approach and orthopedic oncology expertise from a tertiary cancer center, the prognosis for B-AS remains poor. Although limited in number, the molecular profiling revealed overlapping genomic alterations with other clinical subsets of AS, having the potential for individualized patient management.
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