Figure 3.

Mutation types of ST‐1 patients. (A–D) show the type and number of mutations in ST‐1 patients from the Chinese mainland, Taiwan, other Asian regions, and European and American regions, respectively. P means the number of patients; T means the mutation times. Each patient has two mutation sites (perhaps homozygosity) in the NEU1 gene, corresponding to two mutation “occurrences.” A mutation in the intron region of an Indian patient, g.2869A > T (1P, 1T), and a c.1258G > T (2P, 2T) mutation in the 3’‐UTR regions of two Americans patients are not marked in the figure.