The CCP formed between lung cancer co-expression networks of microarray datasets have TCF21, FOXM1, and MYBL2, while the CCP of lung cancer RNA-Seq datasets have TCF21, FOXM1, FOXF1, SOX17, TAL1, LMO2, KLF2, and TBX4 co-expressed with some of the most frequent LC DEGs. Here, KLF2 is linked to lung cancer.