GRM1 and Alzheimer disease: In contrast to their findings, Albasanz and colleagues assessed the postmortem brains of 10 patients with common-form dementia with Lewy bodies (DLB) (i.e., DLB accompanied by AD-related pathology), and found that mGluR1 expression in the cerebrum can decrease with progression of the pathological stages of AD (Albasanz et al., 2005).