For example, in the diagnosis of NSCLC patients with the echinoderm microtubule‐associated protein‐like 4 (EML4)‐gene‐anaplastic lymphoma kinase (ALK) fusion gene, the circRNA F‐CircEA expressed from this fusion gene can be used as a promising fluid biopsy biomarker.8 This evidence concerns the gene ALK and non-small cell lung carcinoma.