Cancer Research and Treatment

Original Articles

Prognostic Value and Staging Classification of Lymph Nodal Necrosis in Nasopharyngeal Carcinoma after Intensity-Modulated Radiotherapy: Yanru Feng, Caineng Cao, Qiaoying Hu, Xiaozhong Chen; Cancer Res Treat. 2019;51(3):1222-1230. Published online December 27, 2018; DOI: https://doi.org/10.4143/crt.2018.595

Purpose
The aim of the present study was to evaluate the prognostic value of magnetic resonance imaging (MRI)‒determined lymph nodal necrosis (LNN) in nasopharyngeal carcinoma (NPC) and explore the feasibility of an N-classification system based on the 8th edition of the American Joint Committee on Cancer (AJCC) system.
Materials and Methods
The MRI scans of 616 patients with newly diagnosed stage T1-4N1-3M0 NPC who were treated with definitive intensity-modulated radiotherapy (IMRT) were reviewed.
Results
Multivariate analysis showed that LNN was an independent negative prognostic predictor of distant metastasis free survival (hazard ratio, 1.634; 95% confidence interval, 1.023 to 2.609; p=0.040) and overall survival (hazard ratio, 2.154; 95% confidence interval, 1.282 to 3.620; p=0.004). Patients of classification N1 disease with LNN were reclassified as classification N2, and classification N2 disease with LNN as classification N3 in the proposed N-classification system. Correlation with death and distant failure was significant, and the total difference between N1 and N3 was wider with the proposed system.
Conclusion
MRI-determined LNN is an independent negative prognostic factor for NPC. The proposed N classification system is powerfully predictive.

Citations

Citations to this article as recorded by

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Advanced image-identified extranodal extension of retropharyngeal lymph nodes in the refinement of N classification for nasopharyngeal carcinoma
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Development and Validation of a Nomogram Based on the Different Grades of Cervical Lymph Node Necrosis to Predict Overall Survival in Patients with Lymph Node-Positive Locally Advanced Nasopharyngeal Carcinoma
Run-Zhi Wang, Li-Ru Zhu, Yao-Can Xu, Mei-Wen Chen, Zhong-Guo Liang, Kai-Hua Chen, Ling Li, Xiao-Dong Zhu
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Associations of Genetic Variations in Mismatch Repair Genes MSH3 and PMS1 with Acute Adverse Events and Survival in Patients with Rectal Cancer Receiving Postoperative Chemoradiotherapy: Jie Yang, Ying Huang, Yanru Feng, Hongmin Li, Ting Feng, Jinna Chen, Luxi Yin, Weihu Wang, Shulian Wang, Yueping Liu, Yongwen Song, Yexiong Li, Jing Jin, Wen Tan, Dongxin Lin; Cancer Res Treat. 2019;51(3):1198-1206. Published online December 26, 2018; DOI: https://doi.org/10.4143/crt.2018.527

Abstract PDF Supplementary Material PubReader ePub

Purpose
Mismatch repair (MMR) deficiency plays a critical role in rectal cancer. This study aimed to explore the associations between genetic variations in seven MMR genes and adverse events (AEs) and survival of patients with rectal cancer treated with postoperative chemoradiotherapy (CRT).
Materials and Methods
Fifty single nucleotide polymorphisms in seven MMR (MLH1, MLH3, MSH2, MSH3, MSH6, PMS1 and PMS2) genes were genotyped by Sequenom MassARRAY method in 365 patients with locally advanced rectal cancer receiving postoperative CRT. The associations between genotypes and AEs were measured by odds ratios and 95% confidence intervals (CIs) by unconditional logistic regression model. The associations between genetic variations and survival were computed by the hazard ratios and 95% CIs by Cox proportional regression model.
Results
The most common grade ≥ 2 AEs in those 365 patients, in decreasing order, were diarrhea (44.1%), leukopenia (29.6%), and dermatitis (18.9%). Except 38 cases missing, 61 patients (18.7%) died during the follow-up period. We found MSH3 rs12513549, rs33013 and rs6151627 significantly associated with the risk of grade ≥ 2 diarrhea. PMS1 rs1233255 had an impact on the occurrence of grade ≥2 dermatitis. Meanwhile, PMS1 rs4920657, rs5743030, and rs5743100 were associated with overall survival (OS) time of rectal cancer.
Conclusion
These results suggest that MSH3 and PMS1 polymorphisms may play important roles in AEs prediction and prognosis of rectal cancer patients receiving postoperative CRT, which can be potential genetic biomarkers for rectal cancer personalized treatment.

Citations

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