CHIT1 and anterior segment dysgenesis: Findings were similar in an age‐ and sex‐matched cohort: significant differences were found between ASMD and GD1 patients for chitotriosidase activity and BMB score (both lower in ASMD with a similar Ff in both diseases) and platelet count, hemoglobin levels, and leucocyte levels (all higher in ASMD, see supplemental Table 1 and 2 and supplemental Figure 1).