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Syndrome reference sheet
Generated 12 Oct 2026
Genetics · Genetics / Chromosomal disorders Pallister–Killian syndrome
Also known as: Tetrasomy 12p mosaicism
Tissue-limited tetrasomy 12p with coarse facies and hypopigmentation.
- Medical specialty
- Genetics
- Subspecialty
- Genetics / Chromosomal disorders
- Sex & age distribution
- Male: affected; Female: affected, equal; Children: yes, congenital
- Gene(s) involved
- None recorded
Etiology & mechanism
Mosaic isochromosome 12p.
Gene(s) involved (0)
No gene recorded.
Symptoms & signs (6)
coarse faciesdiaphragmatic herniapigmentary skin changesseizuressevere intellectual disabilitysparse hair