The case-control study comprised 385 patientswith type 1 diabetes mellitus (T1DM): 223 patients without DKD and 162 with DKD.UCP2 -866G/A (rs659366) and Ins/Del polymorphisms weregenotyped by real-time PCR and conventional PCR, respectively. Here, UCP2 is linked to type 1 diabetes mellitus.