Mutations in the SLC26A4 gene are known to be responsible for a wide phenotypic spectrum, ranging from Pendred syndrome (a disorder associated with sensorineural hearing loss and thyroid goiters) to non‐syndromic hearing loss with enlarged vestibular aqueducts (EVA, Fig. 12) (DFNB4) (Miyagawa et al., 2014). Here, SLC26A4 is linked to Pendred syndrome.