Genetic study suggests type 1 diabetes may be two distinct diseases

A large-scale genetic study conducted by researchers in the United States and the United Kingdom suggests that type 1 diabetes may actually consist of two biologically distinct diseases rather than a single condition. The research, published in the journal Diabetologia, utilized a genome-wide association study (GWAS) to analyze data from 9,091 individuals with type 1 diabetes and 14,157 healthy control subjects.

The study focused on two known genetic profiles, HLA-DR3 and HLA-DR4, which are associated with an increased risk of the disease. While it was previously known that these profiles resulted in different early clinical signs, this research indicates that there are also different underlying biological mechanisms and genetic differences between the two groups. Researchers noted that the genetic gap between the DR3 and DR4 subtypes is comparable to the distinction between schizophrenia and bipolar disorder.

These findings could pave the way for more personalized therapeutic approaches, allowing treatments to be more precisely tailored to the specific biological drivers of an individual's condition.