Abstract
Purpose
The aim of this study was to establish a risk-stratification model integrating posttreatment metabolic response using the Deauville score and the pretreatment National Comprehensive Cancer Network-International Prognostic Index (NCCN-IPI) in nodal PTCLs.
Methods
We retrospectively analysed 326 patients with newly diagnosed nodal PTCLs between January 2005 and June 2016 and both baseline and posttreatment PET/CT data. The final model was validated using an independent prospective cohort of 79 patients.
Results
Posttreatment Deauville score (1/2, 3, and 4/5) and the NCCN-IPI (low, low-intermediate, high-intermediate, and high) were independently associated with progression-free survival: for the Deauville score, the hazard ratios (HRs) were 1.00 vs. 2.16 (95% CI 1.47–3.18) vs. 7.86 (5.66–10.92), P < 0.001; and for the NCCN-IPI, the HRs were 1.00 vs. 2.31 (95% CI 1.20–4.41) vs. 4.42 (2.36–8.26) vs. 7.09 (3.57–14.06), P < 0.001. Based on these results, we developed a simplified three-group risk model comprising a low-risk group (low or low-intermediate NCCN-IPI with a posttreatment Deauville score of 1 or 2, or low NCCN-IPI with a Deauville score of 3), a high-risk group (high or high-intermediate NCCN-IPI with a Deauville score of 1/2 or 3, or low-intermediate NCCN-IPI with a Deauville score of 3), and a treatment failure group (Deauville score 4 or 5). This model was significantly associated with progression-free survival (5-year, 70.3%, 31.4%, and 4.7%; P < 0.001) and overall survival (5-year, 82.1%, 45.5%, and 14.7%; P < 0.001). Similar associations were also observed in the independent validation cohort.
Conclusion
The risk-stratification model integrating posttreatment Deauville score and pretreatment NCCN-IPI is a powerful tool for predicting treatment failure in patients with nodal PTCLs.
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Change history
17 September 2018
Unfortunately, the original version of this article contained several errors made during final step of article production. In the results section (fourth sentence) of the Abstract, the incomplete sentence,”, 31.4% in high-risk group and 4.7% in treatment failure group.
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Acknowledgments
We acknowledge the support of the Biomedical Research Institute, Chonbuk National University Hospital.
Funding
This study was supported by funding from the Biomedical Research Institute, Chonbuk National University Hospital.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the principles of the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
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This study protocol was approved by the institutional review board (IRB) of each participating institution. Because this study was a retrospective analysis involving no more than minimal risk to the subjects, the IRB granted a waiver of written informed consent.
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The original version of this article was revised as it contains several errors made during the final step of article production.
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Yhim, HY., Park, Y., Han, YH. et al. A risk stratification model for nodal peripheral T-cell lymphomas based on the NCCN-IPI and posttreatment Deauville score. Eur J Nucl Med Mol Imaging 45, 2274–2284 (2018). https://doi.org/10.1007/s00259-018-4093-1
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DOI: https://doi.org/10.1007/s00259-018-4093-1