Abstract
Background
The value of p53 status for predicting response to chemotherapy-based treatment in patients with esophageal cancer has been controversial. We conducted a meta-analysis to elucidate the correlation of p53 status with the response to chemotherapy-based treatment.
Methods
Studies were searched in PubMed, Embase, and Web of Science (up to September 2012). The p53 status and response to therapy were defined and standardized. Subgroup analyses based on the treatment and histopathology were performed to explore the usefulness of p53 status for predicting response to therapy in esophageal cancer. Sensitivity analyses were conducted by removing specific studies to assess the effects of study quality.
Results
We included 28 studies with 1497 cases in our meta-analysis. Wild-type form of p53 status (low expression of p53 protein and/or wild-type p53 gene) was associated with high response to chemotherapy-based treatment in esophageal cancer (total major response [MR]: risk ratio [RR] = 1.09, 95 % CI = 1.03–1.16, P = .003; pathological MR: RR = 1.15, 95 % CI = 1.06–1.25, P = .001; total complete response [CR]: RR = 1.08, 95 % CI = 1.00–1.17, P = .040). The similar correlation between the wild-type form p53 and response to therapy were also detected in subgroup analyses (total MR, pathological MR, and total CR in chemoradiotherapy subgroup; total MR in chemotherapy subgroup; total MR and pathological CR in esophageal squamous cell carcinoma [ESCC]). Additionally, patients with wild-type form p53 status had high pathological complete response rate to neoadjuvant chemoradiotherapy in ESCC.
Conclusions
The current meta-analysis suggested that p53 status might be a predictive biomarker for response to chemotherapy-based treatment in esophageal cancer.
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Acknowledgements
This work was supported by of Chinese Ministry of Health Key Program grant (No. 179). We would like to thank the authors of the studies included in our manuscript.
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Shui-Shen Zhang and Qing-Yuan Huang contributed equally to this work and share first authorship.
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10434_2012_2859_MOESM2_ESM.tif
Supplement Figure 1: Forest plots of RR were estimated for association between p53 status and pathological complete response (CR) to neoadjuvant chemoradiotherapy (NCRT) in patients with esophageal squamous cell carcinoma. Supplementary material 2 (TIFF 53 kb)
10434_2012_2859_MOESM3_ESM.tif
Supplement Figure 2: The funnel plot shows that there was no obvious indication of publication bias for the outcome of total major response (MR) to chemotherapy-based treatment in patients with esophageal cancer. Supplementary material 3 (TIFF 66 kb)
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Zhang, SS., Huang, QY., Yang, H. et al. Correlation of p53 Status with the Response to Chemotherapy-Based Treatment in Esophageal Cancer: A Meta-Analysis. Ann Surg Oncol 20, 2419–2427 (2013). https://doi.org/10.1245/s10434-012-2859-4
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DOI: https://doi.org/10.1245/s10434-012-2859-4