HDAC9 and non-small cell lung carcinoma: Recently, it has been reported that HDAC inhibitors such as vorinostat and panobinostat, which are approved by the FDA, can reverse the malignant phenotype of CDDP-resistant NSCLC and when used with CDDP, they inhibit the growth of NSCLC [42, 43], which further demonstrate the potential value, as a anti-drug resistance strategy, based on HDAC therapy.