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Updated: Feb 28, 2026
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Establishment of a Primary Culture of Patient-derived Soft Tissue Sarcoma
Published on: April 11, 2018
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Clinical Characteristics of Complex Karyotype Soft Tissue Sarcomas: A Single-Institution Cohort Study
Eun-Young Lee1, June Hyuk Kim2,3,4, Jong Woong Park2,3,5
1Cancer Microenvironment Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea.
Medicina (Kaunas, Lithuania)
|February 27, 2026
Summary
Undifferentiated sarcoma (US) shows a more aggressive clinical course compared to myxofibrosarcoma (MFS) and leiomyosarcoma of soft tissue (LMS-ST). High-grade tumors (FNCLCC grade 3) are linked to poorer survival in complex karyotype soft tissue sarcomas.
Area of Science:
- Oncology
- Pathology
- Genetics
Background:
- Soft tissue sarcomas (STS) encompass diverse subtypes with complex karyotypes.
- Understanding the clinical behavior of specific STS subtypes is crucial for patient management.
Purpose of the Study:
- To characterize the clinical features and survival outcomes of undifferentiated sarcoma (US), myxofibrosarcoma (MFS), and leiomyosarcoma of soft tissue (LMS-ST).
- To identify prognostic factors influencing survival in these complex karyotype STS subtypes.
Main Methods:
- Retrospective analysis of 124 patients with US, MFS, or LMS-ST treated at a single institution.
- Kaplan-Meier methods for overall survival (OS) estimation.
- Cox proportional hazards regression for prognostic factor identification.
Main Results:
- US exhibited poorer survival outcomes compared to MFS and LMS-ST in both univariable and multivariable analyses.
- FNCLCC grade 3 was a significant adverse prognostic factor across all subtypes.
- Benign prostatic hyperplasia (BPH) was associated with increased mortality risk in FNCLCC grade 3 patients.
Conclusions:
- US demonstrates the most aggressive behavior, MFS is characterized by local recurrence but better survival, and LMS-ST shows intermediate outcomes.
- Significant clinical heterogeneity exists among complex karyotype STS subtypes.
- Findings support further research integrating molecular data for refined risk stratification and treatment strategies.
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