Furthermore, a recently identified dyslexia susceptibility locus on Xq27.3 includes the SLITRK2 and SLITRK4 genes, which belong to the SLIT and NTRK-like family of genes involved in mouse neurite outgrowth and show high homology to Slit proteins [10,45,46]. This evidence concerns the gene SLITRK2 and dyslexia.