Figure 7. Schematic representation of the SALL4 gene/protein and localization of all mutations identified in Duane-related syndromes. Oval symbols: zinc finger domain. Symbols of mutations: open triangle, nonsense; black triangle, deletion; black circle; duplication; open diamond, combined deletion-insertion. Previously found mutations are above the schematic gene, and the mutation (c.1919dupT) reported in this study is under the schematic gene.