Tan et al. found that ACK1 expression levels were significantly elevated in lung adenocarcinoma compared with nontumor tissues [20] Intriguingly, in 210 Singaporean lung adenocarcinomas, ACK1 expression in the adjacent nontumor tissues, but not in the tumors, was an independent predictor of prognosis [20]. Here, TNK2 is linked to lung adenocarcinoma.