Serotonin 3B (5HT3B) receptor showed a trend towards alterations between groups F(3, 56) = 2.156, p = 0.062, with a significant reduction in 5HT3B protein in DLB donors with depression when compared directly with non-depressed DLB donors (p = 0.017, Mann Whitney U). Here, HTR3B is linked to Lewy body dementia.