Samur M, Pamir A, Akbulut H, Erekul S, Sağlik Y, Yildiz Y, Dinçol D, Içli F. The clinical value of flow cytometric DNA content analysis in patients with soft tissue sarcomas.
Sarcoma 2011;
3:171-5. [PMID:
18521281 PMCID:
PMC2395432 DOI:
10.1080/13577149977604]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose. The purpose of this study was to evaluate: (1) the correlation
between grade and ploidy or S-phase fraction (SPF), (2) the prognostic value of DNA flow
cytometric study in soft tissue sarcomas.
Patients /Methods. In all, 47 tissue samples from soft tissue sarcoma
patients, surgically treated in the same center, were included. Flow cytometric analyses
were performed according to a modified version of the original method of Hedley et al.
Results. DNA ploidy status could be determined in 44 samples out of
47 (success rate 94%). Of these 44, S-phase fraction could be calculated in 34 samples (77%).
In the study group as a whole, aneuploidy was significantly correlated with high grade.
Survival analyses were carried out in 21 patients with soft tissue sarcoma, all surgically
treated in the same center, without chemotherapy or radiotherapy. In univariate analyses,
DNA ploidy was found to be a significant factor for overall survival (OAS) and metastasis-free
survival MFS. Mean OAS for aneuploid tumors and diploid tumors were 35 and 65
months (p=0.034), and mean MFS 23 and 61 months, respectively (p=0.005) .
Discussion.There is a relation between histological grade and ploidy in
soft tissue sarcomas. It appears that low-grade tumors are generally diploid, whereas
high-grade tumors tend to be aneuploid. In a subgroup of patients treated only with
surgery, DNA ploidy was found to be an important factor for predicting OAS and MFS.
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