- Independent genome-wide scans identify a chromosome 18 quantitative-trait locus influencing dyslexia. Fisher, S.E., Francks, C., Marlow, A.J., MacPhie, I.L., Newbury, D.F., Cardon, L.R., Ishikawa-Brush, Y., Richardson, A.J., Talcott, J.B., Gayán, J., Olson, R.K., Pennington, B.F., Smith, S.D., DeFries, J.C., Stein, J.F., Monaco, A.P. Nat. Genet. (2002)