Hypertrophic cardiomyopathy due to Kearns–Sayre syndrome (Q61241)

Kearns-Sayre syndrome is a rare mitochondrial neuromuscular disease, usually sporadic, characterised by progressive sensorineural hearing loss, ophthalmoplegia, ptosis, pigmentary retinitis, and central nervous system involvement (cerebellar ataxia, dysarthria, bilateral facial weakness, intellectual deficit),as well as hypertrophic cardiomyopathy and cardiac conduction defects.