Most notable are PEX1 (discussed above), CDK6 ‐ associated with primary microcephaly,10SAMD9 ‐ associated with autosomal dominant MIRAGE syndrome,11 and VPS50 ‐ associated with a neurodevelopmental disorder with microcephaly and seizures, but with no other features of the discussed syndrome.12 Here, PEX1 is linked to Primary microcephaly.