IHC can be a simple and rapid way in screening EML4-ALK fusion gene mutation and exhibits important clinical values..     ///    Figures showed that the disease control rate could reach up to 80% in NSCLC patients with EML4-ALK fusion gene after treated with ALK inhibitors.     ///    Immunohistochemical detection of EML4-ALK fusion gene mutation with specific antibody is feasible.    ///    Immunohistochemical detection of EML4-ALK fusion gene mutation with specific antibody is feasible.     ///    "Thus, exploring an accurate and rapid detecting method is the key in screening NSCLC patients with EML4-ALK expressions. "    ///    [Value of Immunohistochemical Methods in Detecting EML4-ALK Fusion Mutations: A Meta-analysis]..     ///    The aim of this study is to analyze the specificity and sensitivity of IHC in detecting EML4-ALK fusion mutations. 