A novel heteroplasmic tRNALeu(CUN) mtDNA point mutation in a sporadic patient with mitochondrial encephalomyopathy segregates rapidly in skeletal muscle and suggests an approach to therapy. - Fu,K.; Hartlen,R.; Johns,T.; Genge,A.; Karpati,G.; Shoubridge,E.A. (Hum Mol Genet, 1996)