Infection-induced acute encephalopathy 3 (IIAE3) is an autosomal dominant disease resulting from a pathogenic variant in the RANBP2 gene. IIAE3 results in the susceptibility to the recurrence of acute necrotizing encephalopathy (ANE1) which presents as bilateral symmetric thalamic, midbrain and/or hindbrain lesions that typically develops within 1-4 days post-acute viral infection, commonly occurring before age 6.1-6 These case reports highlight a retrospective analysis of clinical data and radiographic studies on 2 ANE1 cases from our institution. The novel p.Leu450Phe variant of the RANBP2 gene was analyzed using in silico algorithms (PolyPhen-2, SIFT, Mutationtaster) which suggests the p.Leu450Phe variant is probably deleterious.7 An expansion of documented ANE1 case presentations and clinically significant RANBP2 gene mutations has the potential to improve long term outcomes if more informed therapeutic decision making can be achieved.

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Pasteurella infections commonly manifest as localized skin infections; however, more invasive infections can also occur. Pasteurella epiglottitis is a rare infection associated with nonbite transmission, including food and beverages contaminated with animal saliva. Fewer than 20 cases of Pasteurella epiglottitis have been reported in the literature.