To further investigate whether the influence of TP53TG1 on the sensitivity of NSCLC cells to cisplatin was associated with apoptosis, pcDNA-TP53TG1-transfected A549/DDP cells were treated with 60 μM of cisplatin and si-TP53TG1-transfected A549 cells were treated with 20 μM of cisplatin for 48 h. Here, TP53TG1 is linked to non-small cell lung carcinoma.