Expression of EFTUD2 was significantly up-regulated in PD-CN (mean (SD) [95% CI] p-value, 1.21 (0.66) [1.04–1.38] p = 0.04) compared to PD-MCI (0.93 (0.60) [0.72–1.14]) (Fig 2A). Here, EFTUD2 is linked to Parkinson disease.