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Syndrome reference sheet
Generated 12 Oct 2026
Dermatology · Dermatology / Genodermatoses Gardner syndrome
Also known as: Familial adenomatous polyposis with extracolonic features
Colonic polyposis with osteomas, epidermoid cysts and desmoid tumors.
- Medical specialty
- Dermatology
- Subspecialty
- Dermatology / Genodermatoses
- Sex & age distribution
- Male: affected; Female: affected, equal; Children: yes, polyps from teens
- Gene(s) involved
- APC
Etiology & mechanism
APC tumor suppressor loss activating Wnt signaling.
Gene(s) involved (1)
APC
Symptoms & signs (6)
colonic polypscolorectal cancercongenital retinal pigment hypertrophydesmoid tumorsepidermoid cystsosteomas