The significant CpG for granulocytes (P = 3.10 × 10–9, q = 0.075) was intergenic but the significant CpG in NK cells overlapped with ZNF502 (P = 3.88 × 10–9, q = 0.094), a possible biomarker for depression [36]. The gene discussed is ZNF502; the disease is major depressive disorder.