MYD88 and hyperinsulinemic hypoglycemia, familial, 4: Lastly, a 19-year-old-patient with MyD88 deficiency (OMIM 602170) with obesity (P24) required conventional nasal prongs for 3 days, and his sister, 16 years old and affected by the same IEI (P25), had non-hypoxemic pneumonia (19).