To assess the possible influence of the Cdh1 Asp187Gly mutation in neurogenesis, which could explain the microcephaly observed in the patient, we studied the cell cycle distribution in primary cortical progenitor cells obtained from either wild‐type (Cdh1+/+) or knockout (Cdh1−/−) mice (Delgado‐Esteban et al. 2013). This evidence concerns the gene CDH1 and microcephaly.