LRRTM4 and dyslexia: Similarly, of the 17 variants (16 in our dataset) mapping to the GC-Rich Sequence DNA-Binding Factor 2 gene (GCFC2), previously associated with dyslexia; and the Leucine-Rich Repeat Transmembrane Neuronal Protein 4 gene (LRRTM4), linked with schizophrenia and epilepsy, eight agreed in the direction of effect, but none had a p value < 0.05 in our meta-analysis.