Clinical Features and Prognostic Factors of Children and Adolescents with Clival Chordomas
第一作者:Zhai, Yixuan
通讯作者:Zhang, Yazhuo
2017-02-01
The study included 25 patients (10 males and 15 females). Average follow-up time was 42.95 months (range, 2-108 months). Kaplan-Meier analysis was used to determine overall survival (OS) and progression-free survival. Pearson correlation was used to perform correlation analysis. Immunohistochemistry was used to detect Ki-67, cytokeratin 8 (CK8), platelet-derived growth factor receptor-β, and brachyury expression levels.
In children and adolescents with clival chordomas, higher preoperative Karnofsky performance scale score, total resection, and lower levels of Ki-67 and CK8 expression are favorable prognostic factors. Platelet-derived growth factor receptor-β may play a role in tumorigenesis and epithelial-mesenchymal transition of clival chordomas.
Average age (± SD) of patients was 14.44 (3.44) years. Total resection was achieved in 5 cases, and nontotal resection was achieved in 20 cases. Average OS of patients with Karnofsky performance scale score ≥90 and patients in the total resection group was significantly longer compared with OS of patients with Karnofsky performance scale score <90 (P = 0.041) and patients in the nontotal resection group (P = 0.0497). Patients with lower Ki-67 expression levels had longer OS (P = 0.0207). Progression-free survival of patients with lower CK8 expression levels was significantly longer compared with patients with higher CK8 levels (P = 0.008). Expression levels of platelet-derived growth factor receptor-β were significantly correlated with expression levels of brachyury (P = 0.016).