CXCL2 and hepatocellular carcinoma: In the present study, we reanalyzed our previous array‐based comparative genomic hybridization (aCGH) and RNA expression profile results,[16, 17] and found that the gene copy number of the C‐X‐C motif chemokine ligand 2 (CXCL2) was frequently deleted, resulting in its low expression in HCC tissues.