In this study, we investigated the effects of two purported p53 reactivators, HO-3867 and APR-246, on cell proliferation via half-maximal inhibitory concentration (IC50) analyses using CyQUANT DNA measurements, tumor growth in vivo and gene expression by bulk RNA sequencing in gynecologic cancer cell lines that harbor oncogenic mutations in p53. This evidence concerns the gene TP53 and neoplasm.