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Divergent therapeutic and prognostic impacts of immunogenic features in undifferentiated pleomorphic sarcoma and myxofibrosarcoma

ABSTRACT: Divergent therapeutic and prognostic impacts of immunogenic features in undifferentiated pleomorphic sarcoma and myxofibrosarcoma

PROVIDER: PRJNA1207028 | ENA |

REPOSITORIES: ENA

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Divergent therapeutic and prognostic impacts of immunogenic features in undifferentiated pleomorphic sarcoma and myxofibrosarcoma

Project description:Undifferentiated pleomorphic sarcoma (UPS) and myxofibrosarcoma (MFS) are genetically complex soft tissue sarcomas with distinct morphological features. Treatment typically involves surgery, often combined with neoadjuvant chemo- or radiotherapy. To better understand the immunobiology of these sarcomas and its associations with treatment response and prognosis, we performed transcriptomic and immunophenotypic profiling. RNA sequencing was performed on 13 UPS and 10 MFS, and immunological profiles were compared with soft tissue sarcoma data from The Cancer Genome Atlas (n = 206 including 44 UPS and 17 MFS). Immune contextures were further evaluated in 14 UPS and 15 MFS using imaging mass cytometry. Characterization of T cell and macrophage infiltration in tumors was further assessed in 23 UPS and 22 MFS through multispectral immunofluorescence and immunohistochemical analysis. UPS and MFS demonstrated immunogenic features compared to other soft tissue sarcomas, with subsets of UPS and MFS demonstrating high T cell infiltration, while UPS demonstrated a higher infiltration by myeloid cells as compared to MFS. Prognostically, T cells and CD68+CD163+ macrophages were associated with metastasis-free survival in UPS but not in MFS. Notably, in UPS, neoadjuvant radiotherapy appeared to induce cytotoxic T cell infiltration and depletion of myeloid cells, whereas these effects were not observed in MFS. These findings highlight important differences in the immunobiology of UPS and MFS with therapeutic and prognostic implications. These differences should be taken into account given the growing availability of immunotherapeutic options for treating patients with soft tissue sarcomas.

2025-06-30 | GSE285944 | GEO

Copy number alteration profiling of myxofibrosarcoma and undifferentiated pleomorphic sarcoma

Project description:We used array-based comparative genomic hybridization to identify copy number alterations in the TP53 and RB1 tumor suppressor genes in 64 myxofibrosarcoma and 30 undifferentiated pleomorphic sarcoma primary untreated tumor samples, and found that 68% of tumor samples had shallow or deep deletions in one or both genes.

2021-01-01 | GSE142573 | GEO

Segment files from SNP array analysis of 145 myxofibrosarcoma and undifferentiated pleomorphic sarcoma

Project description:Genomic profiling of myxofibrosarcoma and undifferentiated pleomorphic sarcomas was done to correlate genomic profiles and signatures with outcome and transcriptomic features.

2024-09-30 | E-MTAB-13948 | biostudies-arrayexpress

Copy number alteration profiling of myxofibrosarcoma and undifferentiated pleomorphic sarcoma

Project description:Copy number alteration profiling of myxofibrosarcoma and undifferentiated pleomorphic sarcoma

| PRJNA597481 | ENA

Copy Number Alteration Profiling of Myxofibrosarcoma and Undifferentiated Pleomorphic Sarcoma

Project description:Copy Number Alteration Profiling of Myxofibrosarcoma and Undifferentiated Pleomorphic Sarcoma

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Copy Number Alteration Profiling of Myxofibrosarcoma and Undifferentiated Pleomorphic Sarcoma

Project description:Copy Number Alteration Profiling of Myxofibrosarcoma and Undifferentiated Pleomorphic Sarcoma

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Single-cell RNA-sequencing of undifferentiated pleomorphic sarcoma, myxofibrosarcoma, and liposarcoma samples from patients participating in a clinical trial studying BO-112 plus Nivolumab and hypofractionated pre-operative radiotherapy.

Project description:Here we analyzed through single cell RNA sequencing multiple samples derived from patients with three different types of soft tissue sarcoma, including liposarcoma, undifferentiated pleomorphic sarcoma, and myxofibrosarcoma, participating in a clinical trial that evaluates the efficacy of intra-tumoral BO-112 injection with or without Nivolumab and pre-operative radiation therapy. The goal of this study is to analyze the changes in the tumor-microenvironment associated with the treatments administered.

2025-07-15 | GSE279852 | GEO

Undifferentiated Pleomorphic Sarcoma Model

Project description:Analysis of undifferentiated pleomorphic sarcoma/malignant fibrous histiocytoma-like tumors from LSL-KrasG12D, p53Fl/Fl mouse model of soft tissue sarcoma.

2009-11-21 | GSE16779 | GEO

Undifferentiated Pleomorphic Sarcoma Model Using Tumors from BrafCa

Project description:Analysis of undifferentiated pleomorphic sarcoma/malignant fibrous histiocytoma like tumors from BrafCa, p53Fl/Fl mouse model of soft tissue sarcoma

2014-12-01 | GSE20049 | GEO

Shared prognostic markers in undifferentiated pleomorphic sarcoma and leiomyosarcoma of the extremities

Project description:Soft tissue sarcoma diagnostics and prognostics are challenging, particularly in highly malignant and pleomorphic subtypes such as undifferentiated pleomorphic sarcoma (UPS) and leiomyosarcoma (LMS). We applied 32K BAC-arrays and gene expression profiling to 18 extremity soft tissue LMS and 31 extremity soft tissue UPS with the aim to identify molecular subtype signatures and genomic prognostic markers. Both the gains/losses and gene expression signatures revealed striking similarities between UPS and LMS, which were indistinguishable using unsupervised hierarchical cluster analysis and significance analysis for microarrays. Gene expression analysis revealed just 9 genes, among them Tropomyosin beta, that were differentially expressed. Loss of 4q31 (encompassing the SMAD1 locus), loss of 18q22 and tumor necrosis were identified as independent predictors of metastasis in multivariate stepwise Cox regression analysis. Combined analysis applying loss of 4q31 and 18q22 and presence of necrosis improved the area under receiver operating characteristic curve for metastasis prediction from 0.64 to 0.86. The extensive genetic similarities between extremity soft tissue UPS and LMS suggest a shared lineage of these STS subtypes and the new and independent genetic prognosticators identified hold promise for refined prognostic determination in high-grade, genetically complex STS. Genomic DNA was extracted from a total of 49 samples, 31 Undifferentiated pleomorphic Sarcomas and 18 Leiomyosarcomas. The DNA was labeled using Bioprime array CGH labeling kit (Invitrogen). Promega pooled male DNA was used as reference. Labeled DNA was hybridized onto BAC arrays containing ~32 000 BAC clones printed in singlets. BAC arrays were produced at the SWEGENE DNA Microarray Facility at Lund University.

2010-10-08 | E-GEOD-13775 | biostudies-arrayexpress

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