– AOH1996 is a proliferating cell nuclear antigen (PCNA) inhibitor. AOH1996 enhances PCNA and RPB1 interaction and interferes with TRC resolution and induces DNA double-stranded breaks in a transcription dependent manner. AOH1996 almost completely inhibits the growth of xenograft tumors without causing any discernible toxicity to experimental animals.AOH1996 has superior metabolic stability as compared to the?AOH1160?parent molecule.?