RAC1 and non-small cell lung carcinoma: An example for exosomal lncRNAs includes SOX2OT through regulating miRNA‐194‐5p/RAC1 axis in NSCLC,182 LncRNA SOX2OT (also known as NCRNA00043 and SOX2 Overlapping Transcript) is overexpressed in plasma exosomes in cases with and without bone metastasis.