Exciting Discovery of a New Maturity-onset Diabetes of the Young Subtype from India (MODY 15).

Maturity-onset diabetes of the young (MODY) was first described by Tattersall and Fajans in their classic paper published in 1975.1 At that time, the classification of diabetes was based purely on the age at onset of diabetes. Those diagnosed with diabetes below 40 years of age were labeled as "growth onset diabetes," while those with onset at or above the age of 40 years were referred to as "maturity onset diabetes." At that time, these types were believed to be equivalent to what are known as type 1 diabetes (T1D) and type 2 diabetes (T2D) today.