The top five hits when comparing 10+ years of plantation work to 0 years of plantation work in post-mortem brain samples of PD patients included hypermethylation of cg14608180 (PTGDS), cg08142821 (Intergenic), cg17880320 (PEX19), cg06173536 (GNG4), and cg11706717 (NID1). Here, GNG4 is linked to Parkinson disease.