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01-02-2011 | Translational Research and Biomarkers

Prognostic Significance of the Alterations of the G1-S Checkpoint in Localized Leiomyosarcoma of the Peripheral Soft Tissue

Authors: John Panelos, MD, Giovanni Beltrami, MD, Guido Scoccianti, MD, Rodolfo Capanna, MD, Milena Paglierani, BSc, Monica Pepi, Daniela Massi, MD, Alessandro Franchi, MD

Published in: Annals of Surgical Oncology | Issue 2/2011

Abstract

Background

The aim of this study was to investigate the expression of cell cycle regulators p53, p16, cyclin-D1, and retinoblastoma (Rb) gene protein in leiomyosarcoma of the peripheral soft in order to identify expression profiles potentially useful for clinical prognostic purposes.

Materials and Methods

A tissue microarray representing 70 localized leiomyosarcomas of the limbs and limb girdles was created with 3 representative cores from each tumor. Immunohistochemical staining was performed for p53, p16, cyclin-D1, and Rb using standard techniques. Staining was scored as either absent-low (<20% of neoplastic cells) or moderate-diffuse (≥20%). Outcome analysis was performed for local recurrence-free survival (LFS), metastatic disease-free survival (MDFS), and disease-specific survival (DSS).

Results

Kaplan–Meier analysis of survival revealed that no single alteration of the factors examined was associated with outcome, but tumors showing concomitant alteration of p16 and p53 were characterized by reduced MDFS and DSS (P = 0.01 and P < 0.001, respectively). In addition, patients who received adjuvant therapy consisting of radiotherapy alone or radiotherapy and chemotherapy had a better DSS than those receiving surgery alone or surgery and chemotherapy (P = 0.05). In multivariate analysis, altered p16/p53 remained the only parameter predictive of MDFS and DSS (P = 0.048, hazard ratio [HR] = 2.488, 95% confidence interval [95% CI] 1.006–5.116; P = 0.043, HR = 2.498, 95% CI 1.029–5.909, respectively).

Conclusions

Accumulation of cell cycle alterations represents a prognostic indicator in localized soft tissue leiomyosarcoma, and in particular altered p16/p53 expression is associated with an unfavorable prognosis. This may help the clinical management of patients with leiomyosarcomas.

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Title: Prognostic Significance of the Alterations of the G1-S Checkpoint in Localized Leiomyosarcoma of the Peripheral Soft Tissue
Authors: John Panelos, MD
Giovanni Beltrami, MD
Guido Scoccianti, MD
Rodolfo Capanna, MD
Milena Paglierani, BSc
Monica Pepi
Daniela Massi, MD
Alessandro Franchi, MD
Publication date: 01-02-2011
Publisher: Springer-Verlag
Published in: Annals of Surgical Oncology / Issue 2/2011
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI: https://doi.org/10.1245/s10434-010-1226-6

At a glance: The STEP trials

Springer Medicine

Prognostic Significance of the Alterations of the G1-S Checkpoint in Localized Leiomyosarcoma of the Peripheral Soft Tissue

Abstract

Background

Materials and Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Materials and Methods

Results

Conclusions

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