Politi Anastasia, Tsiambas Evangelos, Mastronikolis Nicholas S, Peschos Dimitrios, Asproudis Ioannis, Kyrodimos Efthymios, Armata Ilianna E, Chrysovergis Aristeidis, Asimakopoulos Asimakis, Papanikolaou Vasileios S, Batistatou Anna, Ragos Vasileios
Department of Oncology, Medical School, University of Ioannina, Ioannina, Greece.
Department of IHC & Molecular Biology, 401 GAH, Athens, Greece
In Vivo. 2019 May-Jun;33(3):815-819. doi: 10.21873/invivo.11544.
BACKGROUND/AIM: Epidermal growth factor receptor (EGFR) acts as an oncogene in malignancies. Our aim was to examine the role of combined EGFR/ anaplastic lymphoma kinase (ALK) expression as molecular markers in laryngeal squamous cell carcinoma (LSCC) patients.
Fifty (n=50) tissue sections derived from twenty-five (n=25) primary LSCCs were analyzed by immunohistochemistry (IHC).
EGFR overexpression was observed in 17/25 (68%) cases. Concerning ALK, 23/25 (92%) demonstrated low expression. EGFR expression was associated with grade (p=0.049), whereas ALK expression was correlated with stage (p=0.048). ALK overexpression was detected at advanced-stage EGFR-positive cases. A biphasic EGFR protein expression pattern was observed in five (n=5) LSCC cases, whereas ALK expression was stable in all cases.
EGFR overexpression is frequently observed in LSCC combined with low ALK expression. LSCC patients with EGFR/ALK protein overexpression should be eligible for targeted therapeutic strategies.
背景/目的:表皮生长因子受体(EGFR)在恶性肿瘤中作为一种癌基因发挥作用。我们的目的是研究EGFR/间变性淋巴瘤激酶(ALK)联合表达作为分子标志物在喉鳞状细胞癌(LSCC)患者中的作用。
通过免疫组织化学(IHC)分析了来自25例原发性LSCC的50个组织切片。
在17/25(68%)的病例中观察到EGFR过表达。关于ALK,23/25(92%)表现为低表达。EGFR表达与分级相关(p=0.049),而ALK表达与分期相关(p=0.048)。在晚期EGFR阳性病例中检测到ALK过表达。在5例LSCC病例中观察到双相EGFR蛋白表达模式,而ALK表达在所有病例中均稳定。
在LSCC中经常观察到EGFR过表达并伴有低ALK表达。EGFR/ALK蛋白过表达的LSCC患者应适合接受靶向治疗策略。