HDAC9 and non-small cell lung carcinoma: In our previous study, the impacts of SAHA on proteome and histone acetylome in NSCLC A549 cells were investigated, which demonstrated that SAHA altered the profile of the whole proteome of NSCLC cells and highly increased the expression level of histone lysine acetylation, giving its intrinsic roles of HDAC inhibitor for epigenetic regulation13.