In China, the “Standards for Diagnosis and Treatment of Primary Lung Cancer (2015 version)” guideline and the “Consensus on Diagnosis of ALK-positive non-small-cell Lung Cancer (2013 version)” guideline propose that FISH, Ventana IHC, and PCR-based amplification techniques are all appropriate diagnostic techniques for detecting ALK-positive lung cancer [15, 16]. The gene discussed is ALK; the disease is lung carcinoma.