KIAA0319 and dyslexia: Gene-specific promoter methylation analysis of DNA extracted from the saliva of healthy individuals for KIAA0319, a gene known to be involved in ciliogenesis (important in left–right body specification during the early embryonic stage) and affected in dyslexia, revealed that its sex-specific promoter CpG methylation is linked to the regulation of cognitive processes and dichotic listening during the “forced attention condition” [122].