1909 Hans Steinert gives first clear clinical Description of Myotonic Dystrophy

1911 Cataracts are linked to Myotonic Dystrophy. This is the first indication that systems others than muscles are involved

1918 Myotonic Dystrophy is shown to be of heriditary in nature

1944 Researchers find that the heart is also affected

1948 Researchers determine that only one parent is involved in passing on defective gene

1960 Congential Mytotonic Dystrophy is described

1971 Researchers find that the myotonic gene is inherited with two other genes1982 Flawed gene is isolated on Chromosome 19

1991 Falwed Gene is further narrowed on Long arm of Chromosone 19

1992 The location of the Flawed gene is found.