The enrichment results for primary T cells from cord blood and CD15 when included simultaneously in the model for PD are 4.9, P = 1.1 × 10−3 and 7.0, P = 5.2 × 10−3, respectively; and for ALS are 3.5, P = 0.03 and 3.1, P = 0.37, respectively. This evidence concerns the gene FUT4 and Parkinson disease.