CX3CL1 and squamous cell lung carcinoma: Analysis of seven datasets deposited in The Cancer Genome Atlas or the Gene Expression Omnibus databases, showed that higher CX3CL1 mRNA expression is correlated with longer global survival in lung adenocarcinoma patients, but not in lung squamous cell carcinoma patients 75, suggesting that the functions of CX3CL1 could be heterogeneous even between cancer subtypes.