Kim Myong, Sohn Mooyoung, Shim Myungsun, Choi Seung-Kwon, Park Myungchan, Kim Eunna, Go Heounjeong, Park Yangsoon, Cho Yong Mee, Ro Jae Y, Jeong In Gab, Song Cheryn, Hong Jun Hyuk, Kim Choung-Soo, Ahn Hanjong
Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
Hum Pathol. 2017 Mar;61:78-89. doi: 10.1016/j.humpath.2016.12.002. Epub 2016 Dec 15.
The prognostic value of the expression of vascular endothelial growth factor (VEGF), VEGF receptor 2 (VEGFR2), platelet-derived growth factor (PDGF)-β, and PDGF receptor (PDGFR)-β in papillary renal cell carcinoma (pRCC) is unknown. A total of 145 patients, who were confirmed to have pRCC, were analyzed. Expression levels of molecular markers were assessed via immunohistochemistry. The median follow-up period for all patients was 52.0 (interquartile range, 34.5-90.5) months. Among the cohort of 145 patients, high VEGF expression was observed in 100 (69.0%) patients, whereas high expression of VEGFR2, PDGF-β, and PDGFR-β was observed in 64 (44.1%), 42 (29.0%), and 30 (20.7%) patients, respectively. Only patients with high VEGFR2 expression exhibited improved 10-year recurrence-free survival (85.3% versus 58.1%; P=.005) and cancer-specific survival (86.4% versus 70.1%; P=.014) rates compared with individuals who exhibited low expression. Multivariate analysis revealed that high VEGFR2 expression was an independent prognostic factor for recurrence (hazard ratio, 0.326; P=.006) and cancer-specific mortality (hazard ratio, 0.334; P=.046). During follow-up, 17 patients received targeted drug therapy. Patients with high VEGFR2 expression showed a better initial response (partial response, 40%; stable disease, 20%; progressive disease, 40%) than patients with low expression did (partial response, 0%; stable disease, 58.3%; progressive disease, 41.7%; P=.052). pRCC with high VEGFR2 expression seems to be associated with a better initial response to targeted drug therapy and a better prognostic outcome.
血管内皮生长因子(VEGF)、VEGF受体2(VEGFR2)、血小板衍生生长因子(PDGF)-β和PDGF受体(PDGFR)-β在乳头状肾细胞癌(pRCC)中的表达的预后价值尚不清楚。对总共145例确诊为pRCC的患者进行了分析。通过免疫组织化学评估分子标志物的表达水平。所有患者的中位随访期为52.0(四分位间距,34.5 - 90.5)个月。在145例患者队列中,100例(69.0%)患者观察到高VEGF表达,而VEGFR2、PDGF-β和PDGFR-β高表达分别见于64例(44.1%)、42例(29.0%)和30例(20.7%)患者。与低表达患者相比,仅VEGFR2高表达的患者10年无复发生存率(85.3%对58.1%;P = 0.005)和癌症特异性生存率(86.4%对70.1%;P = 0.014)有所改善。多因素分析显示,VEGFR2高表达是复发(风险比,0.326;P = 0.006)和癌症特异性死亡(风险比,0.334;P = 0.046)的独立预后因素。随访期间,17例患者接受了靶向药物治疗。VEGFR2高表达的患者比低表达患者显示出更好的初始反应(部分缓解,40%;病情稳定,20%;疾病进展,40%)(部分缓解,0%;病情稳定,58.3%;疾病进展,41.7%;P = 0.052)。VEGFR2高表达的pRCC似乎与对靶向药物治疗的更好初始反应和更好的预后结果相关。