We released a preprint on the regulatory activity of cortical structure associated variants. We conducted a multiplexed parallel reporter assay using common variants associated with inter-individual differences in the size of the human cortex. Most loci had a least one variant with regulatory potential, and a small subset of these loci showed Wnt-dependent activity. Those loci with regulatory activity were strongly enriched in Alu elements, a type of retrotransposon that has increased in prevalence along the human lineage together with brain size increases. These results help to explain the molecular mechanisms leading to differences in the structure of the human cortex. You can read more about our study here.