MicroRNA 204; involved in regulating non-coding RNAs, anti-apoptotic signaling, linked to Schizophrenia in GWAS study. Transthyretin; involved in thyroid hormone and retinol transport, Aβ clearance in brain, linked to Alzheimer’s disease and Schizophrenia in GWAS study. This evidence concerns the gene TTR and early-onset autosomal dominant Alzheimer disease.