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Syndrome reference sheet
Generated 13 Oct 2026
Endocrinology · Endocrinology / Pediatric endocrinology Septo-optic dysplasia
Also known as: De Morsier syndrome
Optic nerve hypoplasia with midline brain defects and hypopituitarism.
- Medical specialty
- Endocrinology
- Subspecialty
- Endocrinology / Pediatric endocrinology
- Sex & age distribution
- Male: affected; Female: affected equally; Children: yes, infancy
- Gene(s) involved
- HESX1, OTX2, PAX6, SOX2, SOX3
Etiology & mechanism
Early forebrain developmental defects.
Gene(s) involved (5)
HESX1OTX2PAX6SOX2SOX3
Symptoms & signs (8)
absent septum pellucidumgrowth hormone deficiencyhypoglycemiahypothyroidismneonatal jaundicenystagmusoptic nerve hypoplasiapoor vision