IFIH1-related type 1 interferonopathy (MONDO_0700262, a Monarch Disease Ontology identifier) is any type 1 interferonopathies in which the cause of the disease is a variation in the IFIH1 gene. Individuals with variants in IFIH1 can present with a variety of phenotypes, including Aicardi-Goutieres syndrome and singleton-Merten syndrome.