Type 1 Diabetes Mellitus (T1DM) is a chronic autoimmune disease characterized by the destruction of β cells, which are responsible for the production of insulin in the pancreatic islets.1 This hormone is responsible for the regulation of glycemic levels in the human body and, when lacking, leads to elevation and accumulation of glucose in the blood, which in the long term may bring multiple chronic manifestations, including heart failure, retinopathy, kidney failure and neuropathy.2 The gene discussed is INS; the disease is type 1 diabetes mellitus.