Additionally, lower levels of PROT‐a‐300 (C1QBP), PROT‐a‐1220 (GLRX2), and PROT‐a‐2749 (SLC25A18) proteins were found to be associated with the occurrence of dementia with Lewy bodies (IVW: OR = 0.8387, 95% CI 0.7350–0.9570, p = 0.009; IVW: OR = 0.8587, 95% CI 0.7565–0.9746, p = 0.0184; IVW: OR = 0.7947, 95% CI 0.6592–0.9582, p = 0.0161). This evidence concerns the gene SLC25A18 and dementia.