Notably, the only patient of the cohort with KIF7‐related JS had a normal corpus callosum, although pathogenic variants in KIF7 are known to cause both JS and acrocallosal syndrome (ACLS), which is characterized by corpus callosum agenesis, distal anomalies of limbs, minor craniofacial anomalies, and intellectual disability (Dafinger et al., 2011; Putoux et al., 2011). The gene discussed is KIF7; the disease is acrocallosal syndrome.