Maturity onset diabetes of the young (MODY) is a rare genetic form of diabetes caused by a mutation in an autosomal dominant gene disrupting insulin production. MODY is also known as monogenic diabetes. There are many forms of MODY, depending on the gene
MODY affects around 1-2% of people with diabetes.
The charity Diabetes UK lists the key features of MODY as: being diagnosed with diabetes under the age of 25; having a parent with diabetes, with diabetes in two or more generations; not necessarily needing insulin.