CENPF and Stromme syndrome: To date, biallelic truncating variants in CENPF have been identified in eight patients and six fetuses with clinical features of Strømme syndrome (Alghamdi et al., 2020; Caridi et al., 2021; Filges et al., 2016; Ozkinay et al., 2017; Waters et al., 2015) but also in one child with nonsyndromic microcephaly and learning disability (Waters et al., 2015).