This notion has been proposed based on the fact that examination of a Finnish, German, and several United States dyslexia cohorts reveals CYP19A1 expression in the human brain is positively correlated with dyslexia susceptibility genes, including dyslexia susceptibility 1 candidate 1 (DYX1C1) and roundabout homolog 1 (ROBO1) (126). The gene discussed is DNAAF4; the disease is dyslexia.