Seven other diseases compose the interferonopathy family: familial chilblain lupus, retinal vasculopathy with cerebral leukodystrophy, spondyloenchondrodysplasia, STING associated vasculopathy, C1q deficiency, Singleton Merten syndrome, and USP18 deficiency [74]. This evidence concerns the gene USP18 and hyperinsulinemic hypoglycemia, familial, 4.