IFNAR1 and hyperinsulinemic hypoglycemia, familial, 4: Two patients with AR IFNAR1 deficiency, one aged 3 yr and the other aged 13 yr (Abolhassani et al., 2022; Khanmohammadi et al., 2021), and a 3.5-yr-old child with AR TBK1 deficiency (Schmidt et al., 2021) were subsequently reported.