The goal of our current study was to assess ADHD symptoms among our adult patients with T1D, and examine if their ADHD symptom severity or dysfunction in the subcategories of executive dysfunction and emotional dysregulation were associated with cardiovascular comorbidities, elevated HgbA1c levels (worse glycemic control), elevated LDL-cholesterol and triglycerides (risk factors for cardiovascular disease), elevated alanine transaminase (ALT, a liver function test associated with fatty liver), or reduced kidney function (low eGFR, estimated glomerular filtration rate). This evidence concerns the gene GPT and cardiovascular disorder.