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Syndrome reference sheet
Generated 13 Oct 2026
Endocrinology · Endocrinology / Pediatric endocrinology

Sotos syndrome

Also known as: Cerebral gigantism

Overgrowth with macrocephaly and developmental delay.

Medical specialty
Endocrinology
Subspecialty
Endocrinology / Pediatric endocrinology
Sex & age distribution
Male: affected; Female: affected equally; Children: yes, birth
Gene(s) involved
NFIX, NSD1

Etiology & mechanism

NSD1 haploinsufficiency.

Gene(s) involved (2)

NFIXNSD1

Symptoms & signs (9)

advanced bone agecardiac anomaliesdevelopmental delayhypotoniamacrocephalyprominent foreheadscoliosisseizurestall stature
SyndromeScope — educational reference. Content is model-generated and not clinically verified; always confirm against OMIM, Orphanet and GeneReviews before clinical use.