Predicted to enable AP-2 adaptor complex binding activity and calcium ion binding activity. Involved in cochlea development. Located in several cellular components, including apical part of cell; basal part of cell; and endoplasmic reticulum. Biomarker of hypothyroidism. Human ortholog(s) of this gene implicated in autosomal recessive nonsyndromic deafness 9. Orthologous to human OTOF (otoferlin). [provided by Alliance of Genome Resources, Apr 2022]