They were as follows: PDE1A, ASD (odds ratio (OR) = 1.0836, 95% CI 1.0158–1.1560, PIVW = 0.0148); PDE4D, SCZ (OR = 1.0531, 95% CI 1.0020–1.1067, PIVW = 0.0414); PDE4D, MDD (OR = 1.0329, 95% CI 1.0129–1.0532, PIVW = 0.0011); PDE7A, ADHD (OR = 1.0861, 95% CI 1.0270–1.1487, PIVW = 0.0038); PDE5A, TS (OR = 1.6354, 95% CI 1.1134–2.4021, PMR-Egger = 0.0461). Here, PDE5A is linked to major depressive disorder.