[(CAG)n polymorphism of the ATXN2 gene, a new marker of susceptibility for type 2 diabetes mellitus].

Objective: Estimate whether there is an association between the (CAG)n repeat in the ATXN2 gene in the Mexican population and type 2 diabetes mellitus (DM).

Methods: Epidemiological case-control study, including healthy people and diabetics. (CAG)n expansion was detected by end-point polymerase chain reaction (PCR).