Catechol-O-methyltransferase (COMT) polymorphisms have been implicated as an important contributor to psychosis and cognitive differences. Such cognitive alterations may have a neurodevelopmental basis, however, the effect of COMT polymorphisms on early brain development are unclear. Here, we perform the first longitudinal study of differential cortical maturation in infants and young children ages 1 to 6 based on COMT genotype. We demonstrate altered rates of cortical development in the cingulate, frontal and temporal lobes in children with the rs46480 (Val/Met) genotype, suggesting the COMT genotype has an important impact on brain maturation.
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