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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
SyndromeScope — educational reference. Content is model-generated and not clinically verified; always confirm against OMIM, Orphanet and GeneReviews before clinical use.