PMID- 28819445 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1837-9664 (Print) IS - 1837-9664 (Electronic) IS - 1837-9664 (Linking) VI - 8 IP - 12 DP - 2017 TI - DNA-dependent protein kinase catalytic subunit functions in metastasis and influences survival in advanced-stage laryngeal squamous cell carcinoma. PG - 2410-2416 LID - 10.7150/jca.20069 [doi] AB - Background: DNA-dependent protein kinase catalytic subunit (DNA-PKcs) is known to function in several types of cancer. In this study, we investigated the expression and clinicopathologic significance of DNA-PKcs in laryngeal squamous cell carcinoma (LSCC). Methods: We conducted a retrospective study of 208 patients with advanced-stage LSCC treated at Sun Yat-sen University Cancer Center, Guangzhou, China. We assessed DNA-PKcs and p16INK4a (p16) status using immunohistochemistry. We examined the association between DNA-PKcs expression and clinicopathologic features and survival outcomes. To evaluate the independent prognostic relevance of DNA-PKcs, we used univariate and multivariate Cox regression models. We estimated overall survival (OS) and distant metastasis-free survival (DMFS) using the Kaplan-Meier method. Results: Immunohistochemical analyses revealed that 163/208 (78.4%) of the LSCC tissue samples exhibited high DNA-PKcs expression. High DNA-PKcs expression was significantly associated with survival outcomes (P = 0.016) and distant metastasis (P = 0.02; chi-squared test). High DNA-PKcs expression was associated with a significantly shorter OS and DMFS than low DNA-PKcs expression (P = 0.029 and 0.033, respectively; log-rank test), and was associated with poor OS in the p16-positive subgroup (P = 0.047). Multivariate analysis identified DNA-PKcs as an independent prognostic indicator of OS and DMFS in all patients (P = 0.039 and 0.037, respectively). Conclusions: Our results suggest that patients with LSCC in whom DNA-PKcs expression is elevated have a higher incidence of distant metastasis and a poorer prognosis. DNA-PKcs may represent a marker of tumor progression in patients with p16-positive LSCC. FAU - He, Sha-Sha AU - He SS AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of Radiation, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Chen, Yong AU - Chen Y AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of Radiation, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Shen, Xiao-Ming AU - Shen XM AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of Radiology, The First People's Hospital of Foshan (The affiliated Foshan Hospital of Sun Yat-Sen University), Foshan, Guangdong, China. FAU - Wang, Hong-Zhi AU - Wang HZ AD - Department of Radiation Oncology, Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China. FAU - Sun, Peng AU - Sun P AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of Pathology, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Dong, Jun AU - Dong J AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Guo, Gui-Fang AU - Guo GF AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Chen, Ju-Gao AU - Chen JG AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. FAU - Xia, Liang-Ping AU - Xia LP AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Hu, Pei-Li AU - Hu PL AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Qiu, Hui-Juan AU - Qiu HJ AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Liu, Shou-Sheng AU - Liu SS AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Zhou, Yi-Xin AU - Zhou YX AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Wang, Wei AU - Wang W AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of Gastric Surgery, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Hu, Wei-Han AU - Hu WH AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of Radiation, Cancer Center, Sun Yat-Sen University, Guangzhou, China. FAU - Cai, Xiu-Yu AU - Cai XY AD - State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou. AD - Department of VIP Region, Cancer Center, Sun Yat-Sen University, Guangzhou, China. LA - eng PT - Journal Article DEP - 20170722 PL - Australia TA - J Cancer JT - Journal of Cancer JID - 101535920 PMC - PMC5560160 OTO - NOTNLM OT - DNA-dependent protein kinase catalytic subunit (DNA-PKcs) OT - Laryngeal squamous cell carcinoma OT - p16INK4a (p16) OT - prognosis COIS- Competing Interests: The authors declare that there are no conflicts of interest relevant to this article. EDAT- 2017/08/19 06:00 MHDA- 2017/08/19 06:01 PMCR- 2017/01/01 CRDT- 2017/08/19 06:00 PHST- 2017/03/14 00:00 [received] PHST- 2017/05/18 00:00 [accepted] PHST- 2017/08/19 06:00 [entrez] PHST- 2017/08/19 06:00 [pubmed] PHST- 2017/08/19 06:01 [medline] PHST- 2017/01/01 00:00 [pmc-release] AID - jcav08p2410 [pii] AID - 10.7150/jca.20069 [doi] PST - epublish SO - J Cancer. 2017 Jul 22;8(12):2410-2416. doi: 10.7150/jca.20069. eCollection 2017.