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New Predictors of Response to Neoadjuvant Chemotherapy and Survival for Invasive Thymoma: a Retrospective Analysis

  • Thoracic Oncology
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

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Abstract

Background

Cell-cycle protein (p27, p21, and p53) expression can predict response to neoadjuvant chemotherapy and prognosis in some neoplasms. This study evaluated whether these markers could also be effective in invasive thymoma during a multimodality treatment.

Methods

Between 1989 and 2008, 33 patients with invasive thymoma underwent surgical resection after neoadjuvant chemotherapy. Expression of p27, p21, and p53 was assessed using immunohistochemistry in specimens retrieved pre and post chemotherapy. Factors influencing response to neoadjuvant chemotherapy and survival were investigated by univariate and multivariate analysis. Good response was defined as complete disappearance of tumor at imaging or necrosis >90% at pathologic studies.

Results

Twelve patients disclosed an imaging good response. Complete resection was possible in 17 patients, 9 of whom had presented imaging good response and 11 of whom had revealed pathologic good response. On univariate analysis both imaging and pathologic poor responses were significantly associated with incomplete resection (P = 0.04 and P = 0.03, respectively) and preneoadjuvant triple combination of p27 low, p21 low, and p53 high expressions (P = 0.001 and P < 0.0001, respectively), the last factor being the only one selected on logistic regression (P = 0.01 and P = 0.005, respectively). Long-term survival analysis was negatively influenced by triple combination of p27, p21, and p53 (P < 0.0001) and incomplete resection (P < 0.0001), which were also selected on Cox’s regression (P = 0.004 and P = 0.02, respectively).

Conclusions

The triple combination of p27 low, p21 low, and p53 high expressions was the most significant predictor of imaging and pathologic poor responses to neoadjuvant chemotherapy in invasive thymoma. This combination together with incomplete resection was also the most significant negative predictor of long-term survival.

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Acknowledgment

This research was supported by the grant 60% 2005 from the Tor Vergata University and from the Italian Health Ministry according to the project “Profilo genetico associato al fenotipo metastatico e alla prognosi nei tumori polmonari”.

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Authors and Affiliations

  1. Department of Thoracic Surgery, Fondazione and Policlinico Tor Vergata University, Rome, Italy

    Tommaso Claudio Mineo MD, Davide Mineo MD, Ilaria Onorati MD, Maria Elena Cufari MD & Vincenzo Ambrogi MD

Authors
  1. Tommaso Claudio Mineo MD
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  2. Davide Mineo MD
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  3. Ilaria Onorati MD
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  4. Maria Elena Cufari MD
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  5. Vincenzo Ambrogi MD
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Corresponding author

Correspondence to Tommaso Claudio Mineo MD.

Additional information

This study was carried out by Dr. Davide Mineo within the Research Fellowship Program “Tecnologie e Terapie Avanzate di Chirurgia” awarded by Tor Vergata University, Rome, Italy.

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Mineo, T.C., Mineo, D., Onorati, I. et al. New Predictors of Response to Neoadjuvant Chemotherapy and Survival for Invasive Thymoma: a Retrospective Analysis. Ann Surg Oncol 17, 3022–3029 (2010). https://doi.org/10.1245/s10434-010-1134-9

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  • DOI: https://doi.org/10.1245/s10434-010-1134-9

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