In vitro and in vivo functional experiments showed that CRTAC1 can significantly improve the sensitivity of NSCLC cells to cisplatin....CRTAC1 overexpression increases the chemosensitivity of NSCLC to cisplatin treatment by inducing Ca2+-dependent Akt1 degradation and apoptosis, suggesting the potential of CRTAC1 as a biomarker for predicting cisplatin chemosensitivity.