A, Western blot of PCAF (KAT2B) in ADCCS1 and ADCCR1 cells. ADCCS1 and ADCCR1 cells post 33 challenges passaged for 3-4 times were used. Densitometry values of expression relative to GAPDH indicated below. B, Specific lysis of ADCCS1 (blue) and ADCCR1 (red) measured by ADCC assay at 4 hrs when pre-treated with increasing concentrations of histone acetyl transferase inhibitor (HATi) C646 for 2 hours. C, Specific lysis of ADCCS1 (blue) and ADCCR1 (red) measured by ADCC assay at 4 hrs when pre-treated with increasing concentrations of DNMT (DNMTi), pan-HDAC (pan-HDACi), and histone demethylase inhibitors.