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Syndrome reference sheet
Generated 13 Oct 2026
Neurology · Neurology / Mitochondrial disease Kearns–Sayre syndrome
Also known as: KSS
Onset before 20 with PEO and pigmentary retinopathy.
- Medical specialty
- Neurology
- Subspecialty
- Neurology / Mitochondrial disease
- Sex & age distribution
- Male: affected; Female: affected equally; Children: yes, onset before age 20 by definition
- Gene(s) involved
- None recorded
Etiology & mechanism
Large-scale mtDNA deletion.
Gene(s) involved (0)
No gene recorded.
Symptoms & signs (8)
ataxiacsf protein elevationdeafnessendocrinopathyheart blockpigmentary retinopathyprogressive external ophthalmoplegiashort stature