“…It was initially thought to be mainly X-linked, but as DiMauro et al recall in their review 45 , in 1993 they wrote that an "autosomal dominant inheritance cannot be ruled out". In the meantime more than 20 autosomal mutations of the LAMP-2 gene (chromosome 12) have been reported: in exon 7 resulting in the syndrome and with the patient requiring heart transplantation at 41years of age 46 , in intron 6 47 , in intron 8 48 with additional hepatopathy, in exon 5 49 and in exon 4 with several both male and female familiy members being affected 50 . Another missense mutation in the LAMP-2 gene caused a much milder clinical picture with exercise intolerance, persistent HyperCKemia and hypertrophic cardiomyopathy, but no mental retardation or severe heart failure 51 .…”