Non-coding variants in intron 2 of the HK1 gene have now been associated with HI in a growing number of cases. Our findings suggest that a significant proportion of individuals with negative genetics in genes currently known to be associated with HI may harbor HK1 intron 2 variants. Identifying these cases is important for clinical care as well as for assessing recurrence risk for families.
Boodhansingh et al. (Tue,) studied this question.