WARS2 and microcephaly: Mutations in the mitochondrial tryptophanyl‐tRNA synthetase, WARS2 (MIM 604733), have been linked to developmental delay, intellectual disability, microcephaly, seizures, and brain atrophy (Burke et al., 2018; Musante et al., 2017; Theisen et al., 2017; Vantroys et al., 2018; Wortmann et al., 2017), but also with aggressive behavior (Musante et al., 2017) hepatopathy (Vantroys et al.,2018), or early onset Parkinsonism (Burke et al., 2018).