DLGAP2 and Alzheimer disease: Our previous cross‐species analysis identified the postsynaptic density (PSD) protein DLGAP2 (Disks Large Associated Protein 2) as a potential mediator of AD‐related cognitive outcomes and showed that Religious Order Study and Memory and Aging Project (ROSMAP) AD patients with higher levels of DLGAP2 expression had improved late‐life cognitive outcomes.1