The expression of HSDL2 in cancer tissues was correlated with the age (χ2 = 6.031, P=0.016), grade (χ2 = 4.662, P=0.047), lymph node invasion (χ2 = 21.931, P<0.001), and TNM stage (χ2 = 12.663, P=0.001) in patients with lung adenocarcinoma, as shown in Table 1. Here, HSDL2 is linked to lung adenocarcinoma.