Global cerebellar dysplasia has been reported in a few posterior fossa malformations including Chudley-McCullough syndrome [29], α-dystroglycanopathies [30], GPR56-related polymicrogyria [31], and Poretti-Boltshauser syndrome due to LAMA1 mutations [32, 33]. The gene discussed is ADGRG1; the disease is polymicrogyria.