AKT1 and non-small cell lung carcinoma: Although the results of two studies [18,19] which reported the impact of p-AKT expression on overall survival have the opposite conclusion compared with the other five studies [17,21,22,24] in the meta-analysis, our meta-analysis with accumulated data suggested that overexpression of p-AKT was associated with shorter overall survival time and predicted worse prognosis in patients with NSCLC.