Pathogenic or likely-pathogenic variants of WDR73 are linked to infantile-onset cerebellar atrophy (CA), and the rare autosomal recessive Galloway–Mowat syndrome (GMS), characterized by microcephaly and brain anomalies, such as CA, intellectual disability, and highly heterogeneous, in respect of both severity and age of onset, renal manifestations [46]. This evidence concerns the gene WDR73 and microcephaly.