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Syndrome reference sheet
Generated 12 Oct 2026
Gastroenterology · Gastroenterology / Pancreatic disease Johanson–Blizzard syndrome
Also known as: JBS
Pancreatic insufficiency, nasal alae hypoplasia and deafness.
- Medical specialty
- Gastroenterology
- Subspecialty
- Gastroenterology / Pancreatic disease
- Sex & age distribution
- Male: affected; Female: affected, equal; Children: yes, congenital
- Gene(s) involved
- UBR1
Etiology & mechanism
UBR1 ubiquitin ligase deficiency.
Gene(s) involved (1)
UBR1
Symptoms & signs (6)
deafnessdevelopmental delayexocrine pancreatic insufficiencyhypoplastic nasal alaehypothyroidismscalp defects