- Putative functional alleles of DYX1C1 are not associated with dyslexia susceptibility in a large sample of sibling pairs from the UK. Scerri, T.S., Fisher, S.E., Francks, C., MacPhie, I.L., Paracchini, S., Richardson, A.J., Stein, J.F., Monaco, A.P. J. Med. Genet. (2004)