EP300 and Alzheimer disease: TTK21, an activator of the acetyltransferase function of CBP/p300 when conjugated with glucose‐based carbon nanospheres (CSP), hence termed as CSP‐TTK21 (Chatterjee et al., 2013), restored acetylation of histone H2B in the hippocampus of THY‐Tau22 mice, a mouse model with AD‐related Tau pathology (Chatterjee et al., 2018).